Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1981-08-21
1985-03-26
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 28, 525399, 525424, 525439, 525440, 525454, C08F28304
Patent
active
045074445
ABSTRACT:
A process of making radically polymerizable compositions suitable for the production of impact resistant optically clear glass like plastic and forming the glass from such compositions is disclosed. Also taught are the polymerizable compositions and the final glass produced. An isocyanate terminated prepolymer based upon a polyol selected from polyesters, polyester amides, polycarbonates and polyacetals and diisocyanates selected from branched aliphatic isocyanates, cycloaliphatic isocyanates and aliphatic or cycloaliphatic isocyanates graft polymerized with vinyl monomers is chain extended with aliphatic or cyloaliphatic diamines while in solution in vinyl monomers consisting mainly of methacrylic acid esters. The chain extension is carried out with a deficit of amine and preferably to a viscosity at 20% solids in the vinyl monomers of between 200 and 30,000 cP at 20.degree. C. The composition is then radically polymerized to form the high impact glass like plastic alloy.
REFERENCES:
patent: 4097439 (1978-06-01), Darling
Balle Gerhard
Munzer Manfred
Slawyk Wilhelm
Wohnhas, deceased Adolf
Bayer Aktiengesellschaft
Gil Joseph C.
Harsh Gene
Marquis Melvyn I.
Roy Thomas W.
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