Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1982-10-08
1984-06-12
Cockeram, H. S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
20415913, 525 28, 525455, 525539, 525920, 525937, 528 75, 528904, 521905, 424 78, C08G 1832, C08G 1867, C08G 7104, C08F28304
Patent
active
044543093
ABSTRACT:
Polyurethane polyene compositions are obtained by reacting from about 10 to about 50 parts by weight of a polyene in the presence of about 100 parts by weight of a hydrophilic polyurethane resin. The resulting products will swell and increase in weight upon immersion in water and are permeable to gases, moisture vapor ions, and other low molecular weight species. The hydrophilic polyurethane diacrylate compositions may be molded to form shaped products that are dimensionally stable after repeated exposure to boiling water and exhibit memory.
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Gould Francis E.
Johnston Christian W.
Cockeram H. S.
Kell Robert W.
Mueller George F.
Tyndale Plains-Hunter Ltd.
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