Production of low gloss additives for thermoplastic resins

Details Production of low gloss additives for thermoplastic resins Production of low gloss additives for thermoplastic resins

1995-06-05

1996-06-25

Buttner, David

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

Synthetic resins

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

525 67, 525109, 525113, C08L 6900, C08L 6300, C08L 2512, C08J 322

Patent

active

055300626

ABSTRACT:
Gels useful as low gloss additives for blends of addition polymers, such as ABS resins, with polycarbonates are prepared by a melt blending operation in which a polyepoxide such as 3,4-epoxycyclohexyl 3,4-epoxycyclohexanecarboxylate is blended with at least one addition polymer such as a styrene-acrylonitrile copolymer, and concurrently with at least one aromatic polycarbonate in at least two increments. The first increment comprises about 20-60% of total polycarbonate and the second increment is subsequently introduced.

REFERENCES:
patent: 5026777 (1991-06-01), Jalbert et al.
patent: 5336701 (1994-08-01), Wildi
U. S. patent application Ser. No. 08/110,142, filed Aug. 20, 1993.

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