Thermoplastic molding compositions containing polycarbonate and

Details Thermoplastic molding compositions containing polycarbonate and Thermoplastic molding compositions containing polycarbonate and

1985-04-11

1986-08-12

Pertilla, Theodore E.

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

Synthetic resins

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

525 71, 525902, C08L 6900

Patent

active

046056998

ABSTRACT:
A thermoplastic molding material consists of from 10 to 90 parts by weight of a polycarbonate A and from 90 to 10 parts by weight of a graft copolymer B having a mean particle size of from 200 to 700 nm (d.sub.50 value of the integral mass distribution). The graft polymer B is formed from an elastomer (rubber) (b.sub.1), which accounts for from 10 to 80% by weight, and a grafted shell (b.sub.2), which accounts for from 90 to 20% by weight, the percentages in each case being based on (B).
The elastomer (b.sub.1) is composed of from 50 to 99.9% by weight of an alkyl acrylate, where alkyl is of 1 to 8 carbon atoms, and from 0.1 to 5% by weight of a copolymerizable polyfunctional crosslinking monomer.
The grafted shell (b.sub.2) is produced in three stages and contains, as graft monomers,

REFERENCES:
patent: 3130177 (1964-04-01), Grabowski et al.
patent: 3655824 (1972-04-01), Kato et al.
patent: 3891719 (1975-06-01), Schirmer et al.
patent: 4461868 (1984-07-01), Lindner et al.
patent: 4504624 (1985-03-01), Heuschen et al.

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