Urethane-acrylic copolymer thickening compositions for aqueous systems
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United States of America Patent
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May 30, 2000
Grant Date -
N/A
app pub date -
Mar 7, 1997
filing date -
Mar 7, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Thickening composition are produced by linking a polyurethane comprising polyisocyanates, polyether polyols, modifying agents and capping agents with an alkali swellable copolymer comprising ethylenically unsaturated carboxylic acid monomers and nonionic vinyl monomers through a connecting monomer having a polymerizable double bond and a hydrogen active group. The thickening composition are used to provide improved viscosity control, flow and leveling to aqueous systems such as paints and coatings, inks, drilling fluids, adhesives, construction materials, personal care and housedhold products.
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