Process for synthesis of polyestercarbonate-siloxane copolymers

Details Process for synthesis of polyestercarbonate-siloxane copolymers Process for synthesis of polyestercarbonate-siloxane copolymers

1990-10-05

1993-05-25

Dean, Jr., Ralph H.

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

Synthetic resins

From silicon reactant having at least one...

528 29, 528 41, C08G 77445, C08G 77448

Patent

active

052141187

ABSTRACT:
A process for synthesizing polyestercarbonate-siloxane copolymers which have a smaller concentration of low molecular weight species and greater thermal stability has been described. Essentially the process includes adding the comonomer, diacid chloride siloxane, after approximately 1/3 of the phosgene has been added, in a conventional interfacial copolymerization, (as opposed to addition at the beginning of the polymerization).

REFERENCES:
patent: 3419634 (1968-12-01), Vaughn
patent: 3419635 (1968-12-01), Vaughn
patent: 4681922 (1987-07-01), Schmidt et al.
patent: 4732949 (1988-03-01), Paul et al.
patent: 4916194 (1990-04-01), Policastro et al.
patent: 4920183 (1990-04-01), Evan et al.
patent: 4945147 (1990-07-01), Policastro et al.
patent: 4945148 (1990-07-01), Rich et al.
patent: 4994532 (1991-02-01), Hawkins

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