Colloid stabilized latex adhesives
Patent 4668730 Issued on May 26, 1987. Estimated Expiration Date: 
August 5, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 5, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3308078 3673142 Ore grinding process containing copolymer grinding aids Water-soluble pressure-sensitive adhesive composition Particulate dispersions Aqueous emulsion composition Patent #: 4465803 InventorsAssigneeApplicationNo. 06/762651 filed on 08/05/1985US Classes:524/460, Solid polymer utilized is derived from an unsaturated carboxylic acid or salt427/208.4, Pressure sensitive adhesive428/511, Paper or wood428/514, Ester, halide or nitrile of addition polymer428/516, Monoolefin polymer526/201, Material contains previously formed normally solid polymer which is distinct from polymer to be formed and is a polymer formed from at least one ethylenic monomer526/203Normally solid polymer is formed from ethylenically unsaturated dicarboxylic acid, ester, salt, or anhydride thereofExaminersPrimary: Schofer, Joseph L.Assistant: Reddick, Judy M. Attorney, Agent or FirmInternational ClassesC09J 151/00 (20060101)C08F 265/06 (20060101) C08F 265/00 (20060101) AbstractLatex adhesives having a Tg of -60° to 0° C. characterized by superior rheological properties, are prepared without the use of additional thickeners from a colloid stabilized latex comprising: 65-90% by weight of the latex polymer solids of an acrylate or methacrylate ester monomer polymerized in 10-35% by weight of the latex solids of a polymeric colloid, the polymeric colloid having a Tg of -40° to 0° C., a number average molecular weight of 2,000 to 10,000 and comprising(a) 50 to 85% by weight of a monomer of the formula: ##STR1## where R' is hydrogen or methyl and R" is a C1 -C12 straight or branched chain alkyl group;(b) 10 to 50% by weight of an ethylenically unsaturated mono- or dicarboxylic acid;(c) 5 to 30% by weight of an acrylic or methacrylic ester of a polyalkylene oxide, and(d) 0 to 30% by weight of another ethylenically unsaturated copolymerizable monomer. | |
