SCIENTIFIC ABSTRACT KORSHAK,V.V. - KORSHAK, V.V.

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• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

The Influence of Low-Molecular Compounds on the Photo- S07/79-284o-4a/6-,,
chemical Destritetion of Polyethylene Terephthalate
difference in the composition of the polyester (Ref 6).
The absorption spectra of the compounds enumerated are
listed in the preceding report (Ref 7). The changes
in the properties of the irradiated foils were
determined from the changes in molecular weights,
mechanical properties, and spectral characteristics.
It was found that -the decomposition of polyethylene
terephthalate on full ultraviolet irradiation by the
above mentioned lamp occurs far more intensively than
on irradiation at a wave length of 300-320 mV. The
addition of low-molecular organic compounds to the
polyethylene terephthalate affects its decomposition
process. The results obtained harmonize with those
arrived at tinder identical conditions on the decomposition
of polystyrene. There are 6 figures, 1 table, and 8
references, 2 of which are Soviet.
SUBMITTED: August 5, 1957
Card 2/2

XORSHAK, V.V.; POLYAKOVA, A.M.; SAKRAROVA, A.A.; PETROV, A.D.; CHERUSHEV, Ye.A.
Polymerization and copolymerization of unsaturnteLsillcon organic
compounds. Dokl. AN SSSR 119 no.2:282-284 Mr 158. (MIRI 11:5)
1. Inntitut slementoorganicheskikh soyedinenty AN SSSR i Institut
korrespondenty AN SSSR (for Korshnk, Petrov).
(Styrene) (Polymerization) (Silicon organic compounds)

AUTHORS:
TITLE:
PERIODICAL:
ABSTRACT:
Card 141
SOV/20-121-2-29/53
qzahak,_Z~~.Gorresponding Member; AcadeaW of Sciencesq
Y
USSR, Bosing S. L., Chistyakova, M. V.
The Use of the Polyrecombination Reaction in the Production
of Polymers (Primeneniye reaktsii polirekombinatsii dlya
poluoheniya polimerov)
Dolclady Akademii nauk SSSR, 1958P Vol- 121, Nr 29 pp. 299
302 (USSR)
Many scientietshave observed the effect of free radicals
forming due to the deeomposition of peroxides on the formation
of compounds which are dimers of those radicals which are the
residue of-the solvent after the subtraction of a hydrogen
atom (Ref 1)e The authors could prove that the reaction may,
on certain conditions, take such a course that.it does no longer
supply dimers of the solvent but only high-moleoular compounds
(Ref 2). This takes place becauge of a polyreoombination re-
action. The present article describes new experimental results.
The p-di-isopropyl benzene was the initial substance while
various peroxides (mainly tertiary butyl peroxide) served as

SOY/20-121-2-29/53
The Use of the Polyreoombination Reaction in the Production of Polymers
a source of the~free radicals. The mentioned peroxide was
added'gradually to alayer of hydrocarbon at 170 - 2000. On
this.. occasion. a polymer formed which contains, according. to
'the conditions of reaction, a smaller or larger amount of the
insoluble three-dimensional part. The soluble part was OIL-
tracted by benzene and was precipitated with methanol. The
polymer is a white powder with a melting point of,210 - 2300a
It was proved radiographically that the degree of crystal-
lization:of ths,aoluble polymer does not exceed 10% and that
for this reason it has to be regarded as practically amorphous.
The insoluble polymer decomposes at about 3000; its degree of
crystallization reaches 60%. Figure I shows that with the
increasing amount of peroxide also the molecular weight of the
polymer produced increases. At a molar ratio of peroxide and
hydrocarbon - 1 the latter is practically converted completely
into various reaction products. The amount of high molecular
products reaohesq howeverg 100% only at the mentioned ratio - 3.1
Thus the first mole of the peroxide reacts' with the initial
hydrocarbon. The 2nd and 3rd moles, however, react already
Card 2/A with the _produAs of conversion which represent a mix-Lure of

SOY/20-121-2-29/53
The Use of the Polyrecombination Reaction in the Production of Polymers
di- and trimers. The first stage is the decomposition of the
peroxide with the formation of free radicals. They are
tertiary butoxyl-as well as mathyl radicals. They.aro at
different ratios depending on the temperature and the pro-
pertios of the solvent. About half of the peroxide decomposes
under the formation 'of butoxy radicals. The higher the
temperature the more-~marked becomes the decomposition under the.
formation of methyl. radioals.,The authors describe further
conversions and characterize the reaction discussed as one
related to.the polycondensation. Table I shows the results
obtained in using other initial products.
There are 2 figures, I table, and 5 references, 1 of which-
is Soviet.
ASSOCIATION: InEtitut elementoorganicheskikh soyedineniy Akademii nauk SSSR
(Institute o~. Zlewnti&- Organic "ompounds)AS USSR)
SUBMITTED: March 28, 1956
Card 3/4)

SOV/2o-121-3-18/47
AMIIHOR.13 Corresponding !.'ember, Academy of Sciences,
Trunze, T. T.T.
TPE-173: c, m vf,efnilaritiee of Melting Temperature Variations in
cl:!:~,, -Osr- c::l ~*er-ies of Iletwo Chnin Polymers (0 nekotorykh
..LII,oriortiernosty--kh 4zmeneniya temperatury plrvleniya v
ol ugi cite Fjk, ikh ryadakh geterot3e-anykh polimerov)
7 .`k-!der-,ji nauk SSSH, 1958. V01. 121, Nr 3, PP-458-461
u Ss n,
The very interesting problem of the relation between the struc-
ture of the polymers and their properties was frequently in-
vo:3-Ugf-Ited. (1-,Iefs 1-3). Later on more detailed investigationn
slio-ed th!,t there is rA. linear dependence not only in the
c,-se of tUie strai,;~ht polyamide series but also in other series
of the cumT)ounds mentioned in the t-Itle. Therefore the euthors
i;nvectil-r,~ted' t!-,e homolr),-,ical 3erieE3 of 7polyureas, polyamides,
0-1 1'11VOUIZA-10-81 polyethor.9 and polyanhydrides. It turned
out"that in all these series there is a certain de-pe-ndence
Card 1/1- between the number of methylene groups in the member and the

SOV/2o-121-3-18/47
ome
ogulari ties of Meltinf- TemT)ernture 'lariations in Homological Series
k'
of Hetero "hain Polymerr.,
melting temperatures of the polymers (Ref 4, polyamides).
The conformity of- tho mentioned -polymer types proved to be
so complete that in the case of a graphical representation
of the dependence between the melting temperature and the
characteristic features of hetero chains all lines on the
diugrttm intersect the axis of ordinates in one point. The
ratio between the number of hetero bindings in the member
and the number of methylene groups in 0/t)forms the characte:%--
..stic feature of hetero chains (Ref 5). According to figurela
the line plotted through tile experimentally obtained points
.L -
-s close to the straight line. Hence, in each polyamide serles
of tho same structure a linear daTxandence of the mentioned
proDerties exists. 2-hus, the angle of inclination of the
lines concerned is'changed according to the structure of the
member. in the cnee of polyamides obtained from acids and
U'aminee V'J*. en -veil numuer of methylene groups in the mole-
cule thie angle --;:, lprgeslt. It makes a difference wlhet~er
the odd rumber of those group.3 is in the dianine or in the
6 *.c-rboxy~ ic ac iThc inclination of 'he angle derends or
'J
C~~rd 2/3 that. An Oquation 719n derived for eac'- of the mentioned

i)OV/2o-121-'-16/47,
Some Regularities of Yelting Temperature Variations in Homological Series
of Hetero Chain Polymers
Acc-arding a - v the line
of compounds (Table 1). to figurwl
plotted through the experimentally obtained points is clove
enough to the straight line constructed according toequa-
tions. The angle of inclination of the straight line-varies
according tothe structure of hetero compounds.'It is largest
in the case of polyureas followed b~r polyamidea-with an
even number of mbthylene groups then -,--ith variovo combinations
of odd members. They are followed by polyurethanes and
finally bypolyamides with sulfide sulfur and a monoether
binding in the macromolecular chain, There are 1.~igure,
t~able, and 8 references, 4 of which are Soviet.
ASSOCIATION: institut eiementoorgaiiicheskilzh.soyedineniy ".kadenii nuuk S93R
(Institute ofZLOMMUffirOrganic Componnfls AS USSR)
2UBMITTED: -~'Pril 14, 1958
Card 3/3

AUTHORS: Korshak. V--Y-, Corresponding Member SOV/20-122-4-19/57
A5 ffM-,_bTozgova, K. K., Shkolina, M. A.
TITLE: On the Production of Zrvflbed Copolymers of Polyamides With
Vinyl Monomers (0 poluchenii privitykh sopolimerov poliamidov
a vinilinymi monomerami)
PERIODICAL: Doklady Akademii nauk SGSR, 1958, Vol 122, Nr 4, pp 609-611
(USSR)
ABSTRACT: As so they
.e, ::opolymers open new synthetic possibiliti
f,e
have u-u6racted lately to an ever greater extent the 'attention
of the researchers (Refs 1, 2).In all hitherto known methods
the forqation of g,:agted copolymers is accompanied by that of
block po4mers in moat cases. The authors tried to work out a
production method which does not lead to the formation of block
copolymers. For this purpose the initial polyamides were treated.
with ozone and only subsequently with vinyl monomers: styrene -
or methyl-metbacrylate. Thus, a layer of the injected copOlymer
-ppoare d on the surface of the polyamide. First the ozone in-
fluence on polyamide 11 during different intervals was rechecked
(2 minutes - 6 hours). The measuranent results of the mentioned
Card 1/3 layer are shown in table 1. They chow that the quality indices

On the Prod-action of Graft-_A Copolymers of Polyanides 30'1/20-122-4-19/57
With Vinyl Monomers
Card 2/3
of the caprone film are not reduced, but are even increased by
a short ozonization (10 - 20 minutes). quality is reduced only
in the case of an ozonization lasting 1 hour and more. Quality
also decreases when the produced polymer layers are heated up to
five hours. Further experiments with covers of polyamide anide
G-669 (Ref 3) yielded the results compiled in table 2 The show
the same picture as in the case of polycapralactame (ief 3~.
Table 3 shows measuring results of the initial samples of the
polyamides and the same samples after ozonization and polymeri-
zation. They show that the specific viscosity of the solution
increases after ozonization. A still greater increase is ob-
served after polymerization of an ozonized sample of the poly-
amide. Table 4 shows elementary analyses of several injected
copolymers. From the results obtained the authors draw the
conclusion that in consequence of the procedure used by them,
a layer of polystyrene or polymethyl-methaerylate is formed
which is apparently to be found on the surface of the polyamide
film or of the polyamide fiber and is chemically connected with
them. The vaccinated layer does not increase unlimitedly, it
does not surpass 20 percentages by weight. Polyamide loses its

On the Production of Grafted Copolymers of Poly- SOV/20-122-4-19/57
amides With V~inyl Monomers
solubility in alcohol in this connection as well as the
solubility in cresol and formamide. A probable reaction scheme
is given.Obviously peroxide compounds are produced first in
the amide groups of the polyamide subsequently joined by
molecules of the vinyl monomer. There are 3 tables and 3
references, I of wnich is Soviet.
ASSOCIATION: Inatitut elementoorganicheakikh soyedineniy kkademii nauk SSSR
(Institute of Elementary Organic Compounds of the Academy.of
Sciences, USSR)
SUBMITTED: June 19p 1958
Card 3/3
lKna-ComnYM! -fe-ffidlami)
PERIODICAL: Doklady Akademii nauk SSSR, 1958, Vol 123, Nr 5
PP 849-852 (USSR)
ABSTRACT: The reaction of double decomposition, an example of which
is the interaction of the acid chlorides mentioned in the
title with diols, represents the hitherto least investigated
instance of polyester formation (Refs 1-6). A previous paper
(R:ef 7) bv,,the authors contained data on polyesters of
aromatic if-carboxylic acids and of biatomia phenols. In the
present paper, an investigation was to be made of &the
formation of this polyester by the following equation:
HOArOH + CIOCLrCOC1 --4 HC1 + ... - OArOOCArCO - ...
The kinetics of the polycondensation was investigated
in the interaction of the acid chlorides of isophthalic and
Card 1/3 terephthalic acids with p,pt-dioxyphenyl-propane between

The Kinetics of the Polycondensation of SOV/20-123-5-22/50
Dicarboxylic Acid Chlorides With Biatomic Phenols
150 and 2100, of the acid chloride of terephthalic acid with
o,oO-dioxy-diphenyl, resorcin and hydroquinone at '1700, and,
.ina6lly, of the acid chloride of sebacic acid with
p,pt-dioxy-diph6nyl-propane at 1500. The reaction was carried
out in a dinyl solution In a current of dry purified nitrogen..
The reaction proceeded according to a bimolecular mechanism
(according to van't Hoff (Vant-Goff) in Ref 8). Table 1 presents
the velocity constants and the transformation of these reactionse
The velocity constants of the reactions of p,pi-&ioxy-diphenyl-
propane with the acid chlorides of tere-and isophthalic acids
were modified in accordance with the Arrhenius equation (Fig I).
Prom these equations, the energies of activation of the
individual reactions, as well as the temperature coefficients
of the reaction were calculated (Tabft). At 1700, the
individual substances can be classified as follows with regard
to the velocity of the reaction with the acid chloride of
terephthalic acid: hydroqu3none > resorcin ) ool-dioxy-dipheny*
p$p~-dloxy,,diphenyl-propane. The differences among the latter 3
substances are not high. From table I it can be seen that the
Card 2/3 transformation in the reaction increases with rising temperaturea

The Kinetics of the Polyconden .sation of BOV120-123-5-22bO
Dicarboxylic Acid Chlorides With Biatomic Phenols
(duration-.7 hours)i.-Howeve'r;.-the transformation in the
reaction of-p,pt-dioxy-diphenyl-propane with the acid
chloride'of.iso&thalJ.q.a6id is only'0,72,.-even at 2100.
At 2200 and at-,iw higher initial concentration, a trans-
formation of 0.975 could be achieved after a reaction
duration of 7 hours. From figure 2 it can be seen that the
viscosity of the,~polyester, i. e. its molecular weight,
increases continuously with a continued reaction duration.
The development of-thd~polymer o'ha'in takes place after
3-4-hoursq~-.due%iainly to-theTut6ireaction of the polymeric
molecules. There are.2-figures'.2itables, and 8 references,
3 of which are Soviet.
ASSOCIATION:
SUBMITTED:
Card 3/3
Institut eleinentoorganicheakikh soyedineniy-Akade6ii nauk
BSSR (..Institute ofXlewnts~L-Organko Compounds of the
Academy of Sciences, USSR)
July 3, 1958

50) Pffmj SM W-40XWTION BOV/2718
Akademiya, nauk SSR. Institut nauchuoy informataii
Khimiya, i tokhnologiya.sinteticheakikh vyi3okomoleIuayaMkh soyedineniy;
5 L 'iq
:[ObZ6r literatUry /i&Llg 3_ 56 gg./ po WLt#i i tekhnologii sinteticheskikh
vYs0k0z03 IlkI4Ys=Ykh Boyedineniy] tvyp.. 1 (Chemistry and Technology-of
Synthetic High Molecular weight Compounds; 'Literature Reviev for the-
Year 1953-1956 on the Chemistry and Technology of Syntheldc High Mlecular
Wei;~ COMP6UndS' No. 1) ~L M~GCOV' Izd-vO AN SSSR, 1959. 2 V'* (1095 p.)
(Seriesi Itogi'nauki; kbinicheskiye naUki,L3) Errata slips inserted.
4,000 copies printed.
Sponsoring Agency:- Akademiya. nauk SM. Institut elementoorganicheskikh
soyedineniy.
Ed.: V*V~ Korshak,-Corre"QWUn&LXember, USSR Acadeny of Sciences; L Ed. ofL
rub-fi-Mg- Me:' I'. L -Gribova; Tech& Edo. P. s. Kashina and
N.D0* Novichkova,
PURPOSE This book is.inten.ded.for-chenints concerned with the chemistry
and teahnology, of synthetic high moleaular weight compoqds.
Card 1/8
strate the dyna=0,3
Only limited production data were given to illu
Card 2/8

of cf twealwtolotzr.
'ilia hitrctluolvli~n omi iltepta%'s 1, 2 and. waze m,,ittan loy V.V. Irprallal.;
liiaptrw !i by Ya#B. KronL=iz; 011,eptrzi- 5 bY S.V.
6 tri YooFs Rodi'mcva; ChwAcc 7 LNY 11-0. Matuveyava; Ollu-p-be- bY
10 VA-"rvadov-
b'y
EaA ("hapt(u. 13. by ITIJ46 Cf
p,ol,%n.iretl,.in.r,ras aa,-d I~y (I.N.
Chapter 12 vas wi.ttcm by I.A* A,t.
and Chapter 14 by X.K.
OF COMMIMS);
Preface
Introduction
PAW I, CYNNUMM Or, Vill, BIMUII-Varli)14 OF MYRI
[Blblio_sr,raplq,, ~) e.-ttvifial
(,Iexd 3/ 8

altentstry and TaihnWofQr (00149)
Cho 11 P4046rizatic)A 26

compounds
Ionic Polyzerization
Deaarbwql&#oa polymarizatioA
lagration-. copoly=eIrIiza tion, 101
[Bibliogra--OhY, 373 aftia-i-983
Ch. 2. Payqondeasatlova
Fbi~ms ~.Of. polyeondenag-tion
Reantlon, wachanim 6~ 1.lun'w:
lip,
.Mechanism of the
1sation rawtim.
Kinetics - of . pcaycondannation
ABibliograft) 59 aitr~osl
PAPT ii, O-JUMON U -M VOLMMS
Oh. 3. owA Ola9aif:Lc4at!-,-,l!i

Card 4/ 8
-7-
,
R
M

chemistry and Technology (Cont.) SM/2718
ch. ~ 6., oxygen Derivatives ~of Polymethylene 339
yydroxyl-containing polymers 339
Polyvirql a13W1 ethers 344
Polyvinyl seetals 35?
alcohol- exters-:1:. 355
polymers of.vimyl esters of inorgenic acids 372
polymers Of unsat=&ted: sideWes and ketones 373
Polymers of unsaturated-acids and their derivatives 575
(BibliograPhy, 156L entries] 401

, wt2Wlene Derivatives Containing NitX gf-MI, SlUcOn,
Ch. 7. poi,.v 0
~Sull'ur,,- and PhosphoruS 436,
-Polyvinylazines
Polyacrylonitrile 438
Folyvinylidene cyanide 460
polymers of derivatives -ofwn7lonitrile and othr-a., irwaturated
nitriles 461.
Amides of unsaturated "ids 462
Polynitroolefins
Polyvinyl pyridine 467
Poly~~-vinyl carbazole 408
Polyvinyl pyrrolidone, k69
Card 618

Chemistry and.Techziology (Cont.) sov/2718
h. 10. Oxygen-containing Polymers
polyesters
Polyethers 639
Plyadetals ~650
other oxygen-containing polymers 652
(Bibliography, 1833 entries] 653
-Chi Nitrogen-containing Polymers 690
Polyamine-type compounds 691
Polyamides 719
Polyamides containing heteroatoms in the hydrocarbon ehain
' 770
Polyamide
esters 772
(Bibliography, 22.19 references] 784
Ch. 12. Element-Organic Polymers 831
[Bibliography, 215 entries] 844
Ch. 13. Silicon Organic Polymers 849
[Bibliography, 578 entries] 874
Ch. 14. Inorganic Polymers 886
Card 7/8

KORSIUK, V.V. red.; GRIBOVA, I.A. , red.izd-va; MUIXA. P.S., tekhn.
T,'MVICHKOVA, N.D.. telchn.red.
[ChamiitryIand technology of.synthatic macromolecular can-
pounds, no.11 KhImIla I t~khneloglla ain'toticheakikh vyooko-
molekullarnykh soadinonti. nool.-Hoskya. Izd-io Akad. nauk 3552,
1959. 593 P, (Itogi naukil. I'Mmichmakie rvauki. no.3)
OUM 12 t 9)
1. Chlen-korrespondent AN SSSR (for Norebak).
(Macrmolecular compounds)

SOV/62-59-1-25/78
50)
AUTHORS: Korshak, V. V., Vinogradova, S. V.
TITLE: On Polyesters With Heterogeneous Chains (0 geterotsepnykh
poliefirakh)Communication XII. Polyesters of the Azobenzene-
3,31- and Azobenzene-4,41-Dicarboxylic Acid (Soobshcheniye
12. Poliefiry azobenzol-3,3'- i azobenzol-4,4'-dikarbonovoy
kisloty)
PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk,
1959, Nr 1, PP 148 153 (USSR)
ABSTRACTI In the present paper the authors synthesized polyesters of
the azobehzene-3,31- and azobenzene-4,41-dicarboxylic acid.
They investigated the influence exercised by the aromatic
nucleus and the azo group, which are simultaneously contained'
in the molecule of the initial acid, on the properties of
the polyesters. The properties of the polyesters obtained
and aliphatic glycols are given in *etable'.. A comDarison
between the polyesters shows that they diifer considerably.
A modification of the mutual distribution of carboxyl groups
in the initial azo acid varies the properties of the poly-
esters obtained from them. Polyesters of the azobenzene-
Card 1/4 4,41-dicarboxylic acid possess a higher degree of crystalli-

bn Polyesters With Heterogeneous Chains. Communication XII. SOY/62-59-1-25/3,9
Polyesters of the Azobenzene-3,3'- and Azobenzene-4,41-Dicarboxylic.Acid
nity. Their temperature of softening is much higher than
that of corresponding polyesters of the azobenzene-3,3'-
dicarboxylic acid; they are less soluble. The disturbance
of the symmetry of the molecule in the initial dicarboxylic
acid caused by the modification of the mutual distribution
of carboxyl groups leads to a disturbance of the arrangement
of chains in the first members of the polyesters of the
homologous series of glycols and to the destruction of
crystallinity. In order to explain the influence exerted by
the azo groups contained in the aromatic dicarboxylic acid
it is useful to compare corresponding polyesters of the
diphenyl-dicatboxylic acid with those of the azobenzene
dicarboxylie acid. A comparison between the properties of
polyesters of the azobenzene dicarboxylic acids with those
of corresponding polyesters of the diphenyl-ethane and di-
phenyl-ethylene dicarboxylic acid would also be most in-
formative. These comparisons could not be made completely
since there were only data available on the polyester of
Card 2/4 the p,pt-diphenyl-ethane dicarboxylic acid. It was found
that the temperatures of softening of polyesters of the azo-

On Polyesters With Heterogeneous Chains. Communication XII. SOV/62-59-1-25/38
Polyesters of the Azobenzene-3,3'- and Azobenzene-4,41-Dicarboxylic Acid
benzene-4,41-dicarboxylic acids and glycols with short
chains show greater differences, which disappear, however,
in glycols with long chains. It is apparently due to the
fact that on the prolongation of the aliphatic chain the
influence-of the azo group decreases. Beginning with a
certain number of methylene groups in the initial glycol
the influence of the azo group stops existing and the in-
fluence of the glycol becomes decisive. Unlike polyesters
of the az.obenzene-4,41-dicarboxylic acids polyesters of the
azobenzene-3,31-dicarboxylic acids almost do not differ
in their temperatures of softening. Presumably in this case
the properties of polyesters are mainly influenced by the
asymmetric distribution of the carboxyl groups in the
initial acid which destroy the close packing of the polymer
chain. The authors thank Yu. T. Struchkov and A. I, Yefi-
mova for the radiographic analysis of polyesters which was
performed at the Laboratory for X-Ray Structure Analysis
(Head A. I. Kitaygorodskiy). There are 1 table and 6 refer-
Card 3/4 ences, 3 of which are Soviet.

On Polyesters With Heterogeneous Chains. Communication X11. S07162-59-1-25/38.
Polyesters of the Azobenzene-3,31- and Azobenzene-4,4'-Dicarboxylic Acid f
ASSOCIATION; In5titut elementoorganicheskikh soyedineniy Akademii nauk SSSR
(Institute of Elcrental-Organic Compounds of the Academy of
Sciencesq USSR)
SUBMITTED: April 26, 1957
Card 4/4

50) SOV/62-59-1-26/38
AUTHORS: Korshak, V. V~, Vinogradova, S. V.
TITLE: On Polyesters With Heterogeneous Chains (0 geterotsepnykh
poliefira'kh)communication XIII. Polyesters of p-Xylylene
Glycol (Soobshcheniye 13. Poliefiry p-ksililenglikolya)
PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk,
1959, Nr 1, pp 154 - 161 (USSR)
ABSTRACT: In the present paper the authors synthesized polyesters of
the p-xylylene glycol with dicarboxylic acids of the ali-
phatic and aromatic series and investigated the influence
of the aromatic nucleus contained in the glycol molecule
on the properties of polyesters. ~hble 1' presents date
on polyesters of the p-xylylene glycol and dicarboxylic
acids. All polyesters, except the polyester of malonic acidt
are colorless or cream-colored solid substances. The poly-
ester attains the highest melting temperature with oxalic
acid.In the series of polyesters of the p-xylylene glycol and
aliphatic dicarboxylic acids - beginning with oxalic acid -
up to sebacie acid - a similar regularity is observedt as in
Card 1 the Gase of polyesters of the polymethylene glycols with even-,

On Polyesters With Hetergeneous Chains. Communication X111. SOV/62-59-1-26/36
Polyesters of p-Xylylene Glycol
numbered members on modifying the temperatures of softening.,
Since there were only small samples available of several
substances it was not possible to plot all, tliermomechanical
curves by means.of the consistometer. It may be stated,
however, according to the data obtained that the temperature
change during the transition to the viscousliquid phase which
is due to the number of carbon atoms contained in the di-
carboxylic acid molecule, shows the same character as the
change of their melting temperatures. In order to explain
the influence exercised by the aromatic nucleus contained
in the polymer',chain in glycol residues upon the properties
of polyesters it.would be useful to compare polyesters of
the p-xylylene glycol with the corresponding polyesters of
the glycol of the aromatic series - the hexamethylene gl,,-col
(Table 2). 'Table 3' gives data on polyesters of the p-
xylylene glycol with aromatic and hydroaromatic dicarboxylic
acids. It is a typical feature of polyesters of the p-xylylene
glycol with different aromatic acids that all acids with a
Card 2 symmetric structure (with carboxyl groups in the para-

On Polyesters With Hetergeneous Chains. Communication XIII.50V62-59-1-26/38
Polyesters of p-Xylylene Glycol
position) yield opaque polymers. In the case of less symmetric
initial dicarboxylic acids polymers are obtained the
crystallizability of which has disappeared or is complicated.
When substituting a hydroaromatic system (hexahydroterephthe.-
lie acid) for the methylene groups in adipic acid trans-
parent polymers are obtained the softening temperature of
which depends on whether the initial acid is a cis- or
trans-isomer. The trans-acid with a more symmetric.-structure -
yields polyesters with higher temperature,of softeningthan
the lees symmetric cis-acid. The authors thank the co-
workers of the taboratory for X-Ray Structure Analysis
(Head A. 1. Kitaygorodukiy), Yu. T. Struchkov and A. I. Ye-
fimova for the radiographic analysis of polymers, S. L. Sosin
for the supply of dimethyl esters of the 2,5-dimethyl
terephthalic, p,p'-diphenyl-athane dicarboxylie and 3.4-di-
phenyl dicarboxylic acid as well as Ye. S. Krongauz for
the hexadecane dicarboxylic acid. There are 3 tablea and
6 references, 4 of-which are Soviet.
Card 3

5(3) SOV/62-59-1-.76/3e
AUTHORS: Korsba Polyakova, A. M., Mironov, V. F.f
A. D.,
TITLE: Polymerization of Vinyl and Allyl Derivatives of Elements
of the IVth Group (Polimerizatsiya vinil- i allilpr,oizvod-
nykh elementov IV gruppy)
PERIODICAL: I7,vestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauki
1959, Nr 1, pp 178 - 18o (USSR)
ABSTRACT: In the present commnication ?.he authors compared the
reactivity of unsaturated compounds of elements of the
IVth group in ion reactions and radical polymerization$
It was found that the reactivity of these compounds in-
creases in ion reactions in the order C/,Si