Process for preparing a hydrophilic water insoluble polymer and

Details Process for preparing a hydrophilic water insoluble polymer and Process for preparing a hydrophilic water insoluble polymer and

1976-12-13

1978-08-22

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

351159, 351160, 526 64, 526 77, 528503, C08F12020, G02C 702, G02C 704

Patent

active

041090748

ABSTRACT:
A process for preparing a hydrophilic water insoluble acrylic polymer by heating a composition consisting essentially of a compound having the generic formula ##STR1## wherein --R.sub.1 is --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 and --R.sub.2 is a lower alkyl radical containing at least one hydroxy group, said composition being essentially free from polymerization catalysts and initiators; the polymer resulting from the process and articles including contact lens blanks and contact lenses manufactured from the polymer.

REFERENCES:
patent: 2458888 (1949-01-01), Rehberg
patent: 3503942 (1970-03-01), Seiderman
patent: 3951528 (1976-04-01), Leeds
patent: 3957362 (1976-05-01), Mancini et al.
patent: 3963685 (1976-06-01), Abrahams
patent: 3966847 (1976-06-01), Seiderman
patent: 3983083 (1976-09-01), Kaetsu et al.
patent: 3988274 (1976-10-01), Masuhara et al.
patent: 4028295 (1977-06-01), Loshaek

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