Block copolymers based on cyclic aliphatic carbonates and/or est

Details Block copolymers based on cyclic aliphatic carbonates and/or est Block copolymers based on cyclic aliphatic carbonates and/or est

1989-09-14

1992-01-28

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525411, 525413, 525461, 525462, 528196, 528354, 528358, 528370, 528371, C08G 6418, C08G 6412, C08G 6308

Patent

active

050845241

ABSTRACT:
Copolymers of blocks of polymers of cyclic aliphatic carbonates, cyclic aliphatic esters or cyclic aliphatic carbonates and cyclic aliphatic esters on the one hand and blocks of polymers of cyclic aromatic carbonates on the other hand and a process for their production by multistage polymerization, in which a block polymer is initially prepared from the aliphatic monomer and the aromatic polymer is produced in the presence of this block.

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patent: 3422119 (1969-01-01), Prochaska
patent: 3641200 (1972-02-01), Matzner
patent: 4281101 (1981-07-01), Schreckenberg
patent: 4299948 (1981-11-01), Weirauch et al.
patent: 4616077 (1986-10-01), Silva
patent: 4644053 (1987-02-01), Brunelle et al.
patent: 4699974 (1987-10-01), Evans
patent: 4727134 (1988-02-01), Brunelle et al.
patent: 4754017 (1988-06-01), Leitz et al.

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