Production of a new type of butadiene polymer
1,139,431. Stereoblock polybutadienes. BADISCHE ANILIN- & SODA-FABRIK A.G. 13 May, 1966 [15 May, 1965], No. 21258/66. Heading C3P. Stereoblock polymers of butadiene are made by reacting (1) a catalyst containing hydrocarbon solution of uncrosslinked polybutadiene made by polymerizing butadiene w...
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creator | NAARMANN HERBERT KASTNING ERNST-GUENTHER |
description | 1,139,431. Stereoblock polybutadienes. BADISCHE ANILIN- & SODA-FABRIK A.G. 13 May, 1966 [15 May, 1965], No. 21258/66. Heading C3P. Stereoblock polymers of butadiene are made by reacting (1) a catalyst containing hydrocarbon solution of uncrosslinked polybutadiene made by polymerizing butadiene with a catalyst comprising a compound of a transition metal of Groups IV to VIII of the Mendeleeff Periodic System and an alkyl metal compound until the polymer has a K-value of from 20 to 80, with (a) a similar solution of uncrosslinked polybutadiene of different configuration, until the resulting polymer has a K-value of 90 to 120. At least one of the solutions may contain unreacted butadiene. The solutions (1) and (2) are preferably effected below 0 C., and the reaction between - 5 and + 30 C. The specification contains numerous examples of catalysts which give rise to polybutadienes of different and opposite configurations. The polymers may be vulcanized. |
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Stereoblock polymers of butadiene are made by reacting (1) a catalyst containing hydrocarbon solution of uncrosslinked polybutadiene made by polymerizing butadiene with a catalyst comprising a compound of a transition metal of Groups IV to VIII of the Mendeleeff Periodic System and an alkyl metal compound until the polymer has a K-value of from 20 to 80, with (a) a similar solution of uncrosslinked polybutadiene of different configuration, until the resulting polymer has a K-value of 90 to 120. At least one of the solutions may contain unreacted butadiene. The solutions (1) and (2) are preferably effected below 0 C., and the reaction between - 5 and + 30 C. The specification contains numerous examples of catalysts which give rise to polybutadienes of different and opposite configurations. 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Stereoblock polybutadienes. BADISCHE ANILIN- & SODA-FABRIK A.G. 13 May, 1966 [15 May, 1965], No. 21258/66. Heading C3P. Stereoblock polymers of butadiene are made by reacting (1) a catalyst containing hydrocarbon solution of uncrosslinked polybutadiene made by polymerizing butadiene with a catalyst comprising a compound of a transition metal of Groups IV to VIII of the Mendeleeff Periodic System and an alkyl metal compound until the polymer has a K-value of from 20 to 80, with (a) a similar solution of uncrosslinked polybutadiene of different configuration, until the resulting polymer has a K-value of 90 to 120. At least one of the solutions may contain unreacted butadiene. The solutions (1) and (2) are preferably effected below 0 C., and the reaction between - 5 and + 30 C. The specification contains numerous examples of catalysts which give rise to polybutadienes of different and opposite configurations. 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Stereoblock polybutadienes. BADISCHE ANILIN- & SODA-FABRIK A.G. 13 May, 1966 [15 May, 1965], No. 21258/66. Heading C3P. Stereoblock polymers of butadiene are made by reacting (1) a catalyst containing hydrocarbon solution of uncrosslinked polybutadiene made by polymerizing butadiene with a catalyst comprising a compound of a transition metal of Groups IV to VIII of the Mendeleeff Periodic System and an alkyl metal compound until the polymer has a K-value of from 20 to 80, with (a) a similar solution of uncrosslinked polybutadiene of different configuration, until the resulting polymer has a K-value of 90 to 120. At least one of the solutions may contain unreacted butadiene. The solutions (1) and (2) are preferably effected below 0 C., and the reaction between - 5 and + 30 C. The specification contains numerous examples of catalysts which give rise to polybutadienes of different and opposite configurations. The polymers may be vulcanized.</abstract><oa>free_for_read</oa></addata></record> |
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subjects | CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS |
title | Production of a new type of butadiene polymer |
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