Homogeneous mixture of polymethacrylimide polymers

Details Homogeneous mixture of polymethacrylimide polymers Homogeneous mixture of polymethacrylimide polymers

1991-05-10

1992-08-04

Michl, Paul R.

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

Synthetic resins

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

525228, 525230, C08L 3904, C08L 3306

Patent

active

051359855

ABSTRACT:
Homogeneous polymer mixtures of polymethacrylimides consist of a component (A), composed of from 30 to 90 percent by weight of methacrylalkylimide units and from 3.5 to 10 percent by weight of methacrylic acid units, and of a component (B1) or (B2) having from 10 to 50 percent by weight more methacrylalkylimide units than component (A), component (B1) having a degree of imidization of less than 95 percent and containing from 3.5 to 10 percent by weight of methacrylic acid units, and component (B2) having a degree of imidization greater than 95 percent and containing less than 3.5 percent by weight of methacrylic acid units.

REFERENCES:
patent: 2146209 (1939-02-01), Graves
patent: 3284425 (1966-11-01), Schroeder et al.
patent: 4727117 (1988-02-01), Hallden-Abberton et al.
patent: 4954574 (1990-09-01), Hallden-Abberton et al.
patent: 5004777 (1991-04-01), Hallden-Abberton et al.

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