Process for producing poly methyl methacrylate/N-substituted mal

Details Process for producing poly methyl methacrylate/N-substituted mal Process for producing poly methyl methacrylate/N-substituted mal

1991-05-28

1992-10-13

Anderson, Harold D.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526262, 528322, C08F22052

Patent

active

051551900

ABSTRACT:
An optical resin obtained by polymerizing 97 to 50% by weight of methyl methacrylate, 3 to 30% by weight of an N-substituted maleimide, and 0 to 40% by weight of an unsaturated monomer by suspension polymerization at a pH of 5.5 to 7.5 is excellent in heat resistance and transparency.

REFERENCES:
patent: 3676404 (1972-07-01), Nield
patent: 4696978 (1987-09-01), Dean
patent: 4868261 (1989-09-01), Kobayashi et al.

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