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US 4,950,711 AGranted
Blister-resistant paper coating latex
AssigneeReichhold Chemicals, Inc.
InventorsDavid W. Suwala, Igor B. Aksman
Life of this patent
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Abstract
An improved blister resistant paper coating polymer latex comprising an aliphatic conjugated diene monomer, a monoolefinic monomer and an ethylenically unsaturated carboxylic acid monomer and including a molecular weight modifier such as an organosulfur compound and a soluble salt of a nonpolymerizable organic acid.
Claims14
In a coating composition for paper comprising a polymer latex prepared by emulsion polymerizing:
- (a) an aliphatic conjugated diene monomer,
- (b) an non-carboxylic monoethylenic monomer, and
- (c) an ethylenically unsaturated carboxylic acid monomer, the improvement which consists essentially of conducting the polymerization in the absence of an alkyl halide and in the presence of about 1.5 to 5% by weight of an organosulfur molecular weight modifier and about 0.5 to 5% by weight of a water soluble salt of a non-polymerizable organic acid.
Dependencies are inferred from the claim text.