Particulate graft polymer with improved adhesion between graftin

Details Particulate graft polymer with improved adhesion between graftin Particulate graft polymer with improved adhesion between graftin

1991-03-01

1993-10-12

Jagannathan, Vasu S.

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

Synthetic resins

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

525 85, 525303, 525306, 525308, 524504, C08L 5104, C08F26504, C08F26506

Patent

active

052526666

ABSTRACT:
A particulate graft polymer comprises from 30 to 90% by weight, of at least one elastomeric polymer A having a median particle size of from 30 to 1000 nm comprising--based on A--from 85 to 99.8% by weight of at least one alkyl acrylate A1 having from 1 to 8 carbon atoms in the alkyl moiety, from 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A2 and from 0.1 to 10% by weight of at least one further monoethylenically unsaturated monomer as grafting base, and from 10 to 70% by weight, grafted onto the elastomeric polymer A, of a sheath B comprising--based on B--from 50 to 90% by weight of at least one aromatic vinyl monomer B1 and from 10 to 50% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer B2, wherein monomer A3 is a hydroxyalkyl acrylate or methacrylate.

REFERENCES:
patent: 3055859 (1962-09-01), Vollmert
patent: 3793282 (1974-02-01), Fock et al.
patent: 3879494 (1975-04-01), Milkovich et al.
patent: 4707513 (1987-11-01), Baer
patent: 4764563 (1988-08-01), Meredith et al.

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