FIELD: chemistry.
SUBSTANCE: method includes continuous polymerization of butadiene-1,3 in a hydrocarbon solvent in a cascade of reactors under the action of an anionic initiator at a temperature of 80-90°C to produce a reaction mass. Herewith the anionic initiator is modified with alcoholates of alkali and alkaline-earth metals. The resulting reaction mass is then reacted with styrene at a temperature of 60-75°C.
EFFECT: increased monomer costs and an increase in block copolymer productivity, an increase in the range of polymerization equipment, and the production of a block copolymer with a high content of styrenic units in the block.
7 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING BLOCK-COPOLYMERS | 2014 |
|
RU2554341C1 |
| METHOD FOR OBTAINING BLOCK COPOLYMERS | 2017 |
|
RU2659080C1 |
| METHOD FOR OBTAINING BUTADIENE POLYMERS AND BUTADIENE COPOLYMERS WITH STYRENE | 2007 |
|
RU2339651C9 |
| METHOD OF PRODUCING BUTADIENE-STYRENE STATISTICAL POLYMERS | 2010 |
|
RU2434025C1 |
| METHOD OF PRODUCING BUTADIENE POLYMERS AND COPOLYMERS OF BUTADIENE WITH STYRENE | 2008 |
|
RU2377258C2 |
| RANDOM COPOLYMERS OF VINYL AROMATIC COMPOUNDS AND CONJUGATED DIENES AND A METHOD FOR PRODUCTION THEREOF | 2016 |
|
RU2706012C1 |
| METHOD FOR PRODUCTION OF DIENE COPOLYMERS CONTAINING FUNCTIONAL GROUPS | 2001 |
|
RU2175330C1 |
| MIXTURES OF AMINOSILYL-FUNCTIONALIZED STYRENE, THEIR PRODUCTION, AND THEIR USE IN PRODUCTION OF ELASTOMERIC COPOLYMERS | 2019 |
|
RU2780620C2 |
| METHOD OF PRODUCING BUTADIENE-STYRENE BLOCK-COPOLYMERS | 2014 |
|
RU2689781C2 |
| NOVEL POLYMERS AND THEIR APPLICATION IN OBTAINING HIGH-IMPACT POLYMER COMPOSITIONS | 2009 |
|
RU2533206C2 |
