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Synthesis of graft copolymers—XIII
936
Abstracts
and of high thermal stability in an inert atmosphere, losing in weight about 2% at 400 °, about 4~/o at 500 °, about 7% at 600 ° and about 8~o at 700 °. They are not thermostable in air. All the polymers give EPR signals and possess static paramsgnetism. The electroconductivity of these polymers at room temperature is 10- l ° - 10-l° ohm -1. cm-L SYNTHESIS OF GRAFT COPOLYMERS--XIII
V. V. K o r s h a k , K. K. Mczgova, M. A. Shkolina, R. V. U z i n a a n d T. V. I o n o v a . Vysokomol. soyed. 5: No. 3, 338-342, 1963. THE possibility of synthesizing graft copolymers on the surface of capron fibres by block eopolymerization in which the fibers were preliminarily activated by heating in air has been investigated. It has been shown that the graft copolymers of poly-e-capramido with vinyl monomers possess enhanced adhesion to rubber as compared with the original fibre. SYNTHESIS, POLYMERIZATION AND COPOLYMERIZATION OF POLYORGANOSILOXANES CONTAINING METHACRYLATE GROUPS
M. A. B u l a t o v , S. S. Spasskii a n d S. G. Mishina, Vysokomol. soyed. 5: No. 3, 343-347, 1963. was prepared by reaction of chloromethylmethyldiethoxysilane, methacrylic acid and triethylamide. The heterofunetional condensation of this product with dimethyldiacetoxysilane and dimethyldiethoxysilane gave a series of linear polyorg~nosiloxanes containing methacrylate groupings at the silicon atoms and capable of further three-dimensional polymerization and copolymerization in the presence Of peroxide initiators. METHACRYLOXYMETHYLMETHYLDIETHOXYSILANE
PHOSPHORYLATED POLYSACCHARIDES--H. PHOSPHORYLATION OF CELLULOSE BY ALCOHOLYSIS OF THE AMIDES OF TRIVALENT PHOSPHORUS ACIDS
K. A. P e t r o v , E. Ye. N i f a n t ' e v , L. V. K h o r k h o y a n u and V. F. Voblikov, Vysokomol. soyed. 5: No. 3, 348-352, 1963. THE phosphorylation of cellulose by alcoholysis of the amides of trivalent phosphorus acids (diethylamide of diethylphosphinie acid, tetraethy]diamide of cthylphosphorous acid and hexaethyltriamide of phosphorous acid) has been investigated. The effect temperature of the reaction has been determined. Best results were obtained with cellulose reprecipitated from triethylbenzylammonium hydroxide solution and included with pyridine. The optimal reaction conditions were 100-120 ° for a period of 20-40 hours. In that case phosphorylated cellulose specimens were obtained with y approaching 300. 1~e cellulose phosphites and phosphinites are reactive compounds. They are easily oxidized, add sulphur, react with sulphenchlorides and undergo Arbuzov reaction. POLYMERIZATION OF ORGANOMETAL DERIVATIVES OF STYRENE
A. M. P o l y a k o v a , A. A. S a k h a r o v a , E. A. Chernyshev, T. L. K r a s n o v a , V. V. K o r s h a k a n d A. D. P e t r o v , V y s o k c m o l . soyed. 5: No. 3, 353-356, 1963. THE polymerization of organometal styrene derivatives of the general formula RaMe Iv C6HdCH~CHs, where Me=Sn, Ge and Si and R = C H a and CsH 5 in the presence of azo-b/siso-butyronitrile under and without pressure has been investigated. Polymers were obtained and their properties and structures determined.
Abstracts
and of high thermal stability in an inert atmosphere, losing in weight about 2% at 400 °, about 4~/o at 500 °, about 7% at 600 ° and about 8~o at 700 °. They are not thermostable in air. All the polymers give EPR signals and possess static paramsgnetism. The electroconductivity of these polymers at room temperature is 10- l ° - 10-l° ohm -1. cm-L SYNTHESIS OF GRAFT COPOLYMERS--XIII
V. V. K o r s h a k , K. K. Mczgova, M. A. Shkolina, R. V. U z i n a a n d T. V. I o n o v a . Vysokomol. soyed. 5: No. 3, 338-342, 1963. THE possibility of synthesizing graft copolymers on the surface of capron fibres by block eopolymerization in which the fibers were preliminarily activated by heating in air has been investigated. It has been shown that the graft copolymers of poly-e-capramido with vinyl monomers possess enhanced adhesion to rubber as compared with the original fibre. SYNTHESIS, POLYMERIZATION AND COPOLYMERIZATION OF POLYORGANOSILOXANES CONTAINING METHACRYLATE GROUPS
M. A. B u l a t o v , S. S. Spasskii a n d S. G. Mishina, Vysokomol. soyed. 5: No. 3, 343-347, 1963. was prepared by reaction of chloromethylmethyldiethoxysilane, methacrylic acid and triethylamide. The heterofunetional condensation of this product with dimethyldiacetoxysilane and dimethyldiethoxysilane gave a series of linear polyorg~nosiloxanes containing methacrylate groupings at the silicon atoms and capable of further three-dimensional polymerization and copolymerization in the presence Of peroxide initiators. METHACRYLOXYMETHYLMETHYLDIETHOXYSILANE
PHOSPHORYLATED POLYSACCHARIDES--H. PHOSPHORYLATION OF CELLULOSE BY ALCOHOLYSIS OF THE AMIDES OF TRIVALENT PHOSPHORUS ACIDS
K. A. P e t r o v , E. Ye. N i f a n t ' e v , L. V. K h o r k h o y a n u and V. F. Voblikov, Vysokomol. soyed. 5: No. 3, 348-352, 1963. THE phosphorylation of cellulose by alcoholysis of the amides of trivalent phosphorus acids (diethylamide of diethylphosphinie acid, tetraethy]diamide of cthylphosphorous acid and hexaethyltriamide of phosphorous acid) has been investigated. The effect temperature of the reaction has been determined. Best results were obtained with cellulose reprecipitated from triethylbenzylammonium hydroxide solution and included with pyridine. The optimal reaction conditions were 100-120 ° for a period of 20-40 hours. In that case phosphorylated cellulose specimens were obtained with y approaching 300. 1~e cellulose phosphites and phosphinites are reactive compounds. They are easily oxidized, add sulphur, react with sulphenchlorides and undergo Arbuzov reaction. POLYMERIZATION OF ORGANOMETAL DERIVATIVES OF STYRENE
A. M. P o l y a k o v a , A. A. S a k h a r o v a , E. A. Chernyshev, T. L. K r a s n o v a , V. V. K o r s h a k a n d A. D. P e t r o v , V y s o k c m o l . soyed. 5: No. 3, 353-356, 1963. THE polymerization of organometal styrene derivatives of the general formula RaMe Iv C6HdCH~CHs, where Me=Sn, Ge and Si and R = C H a and CsH 5 in the presence of azo-b/siso-butyronitrile under and without pressure has been investigated. Polymers were obtained and their properties and structures determined.