Graft copolymers and the method of their preparation

Details Graft copolymers and the method of their preparation Graft copolymers and the method of their preparation

1984-10-18

1986-04-22

Bleutge, John C.

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

Synthetic resins

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

525455, 525296, C08F28304, C08F26510

Patent

active

045843546

ABSTRACT:
Graft copolymers are formed having a backbone formed by monomeric units, selected from the group of vinyl monomers comprising acrylates, methacrylates, acrylamide, styrene and N-vinyl-2-phyrrolidone, and side branches formed by 10-80 wt. % of oligourethanes based on aliphatic, aromatic and alkylaromatic diisocyanates and low-molecular-weight diols with 2-4 carbon atoms in the molecule. The graft copolymers are prepared in two steps: the first step consists in the synthesis of oligourethane with the terminal unsaturated group; the second step is the radical copolymerization of this oligourethane with the above vinyl monomers.

REFERENCES:
patent: Re29772 (1978-09-01), Niederhauser et al.
patent: 3297745 (1967-01-01), Fekete et al.

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