Silane grafted poly(vinyl alcohol) film

Details Silane grafted poly(vinyl alcohol) film Silane grafted poly(vinyl alcohol) film

1974-08-12

1976-05-25

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 296H, 260 67S, 260 67UA, 260 793M, 260 795NV, 260 797, 260825, 526 29, 526 79, 526 90, 526217, 526225, 526208, 526279, 427133, 428447, B05D 306, C08F 842

Patent

active

039592421

ABSTRACT:
A thermoplastic composition suitable as a mold release surface for preparing cast articles which comprises a silane grafted poly(vinyl alcohol) prepared by the method which comprises incrementally reacting a selected silane with the poly(vinyl alcohol) characterized by having a molecular weight in the range of about 5,000 to about 150,000, by having a 4 weight percent aqueous solution viscosity at 20.degree.C in the range of about 5 to about 65 centipoises, and by containing about 70 to about 98 weight percent vinyl alcohol units.

REFERENCES:
patent: 2441066 (1948-05-01), Hanford
patent: 2489225 (1949-05-01), Morris
patent: 3408420 (1968-10-01), Wiggill
patent: 3528998 (1970-09-01), Tesoro
patent: 3870766 (1975-03-01), Chadha

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