Poly epoxy branched polycarbonate and method for preparation

Details Poly epoxy branched polycarbonate and method for preparation Poly epoxy branched polycarbonate and method for preparation

1989-09-15

1990-09-25

Anderson, Harold D.

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

Synthetic resins

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

525462, 525467, C08G 6442

Patent

active

049594222

ABSTRACT:
Branched polycarbonates are prepared by the reaction of at least one polyepoxy compound, preferably triglycidyl isocyanurate, with at least one carboxylic acid-terminated polycarbonate, preferably of the type prepared by employing t-butyl p-hydroxybenzoate as a chainstopper in an interfacial polycarbonate formation reaction followed by thermal elimination of isobutene. The branched polycarbonates have high melt viscosities and high complex viscosity ratios, and are particularly useful in such operations as blow molding.

REFERENCES:
patent: 4782124 (1988-11-01), Hefner et al.
patent: 4853458 (1989-08-01), Gambale et al.

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