Addition polymerizable polyethers having pendant ethylenically unsaturated urethane groups
Patent 4233425 Issued on November 11, 1980. Estimated Expiration Date: 
November 15, 1998. 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.
November 15, 1998. 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 ReferencesInventorsApplicationNo. 05/961000 filed on 11/15/1978US Classes:525/455, Mixed with ethylenically unsaturated reactant or polymer therefrom522/96, With ethylenic reactant522/97, Polyurethane has an oxygen other than as part of a urethane or carboxylic acid ester group525/408, Mixed with carboxylic acid or derivative or polymer derived therefrom525/528, Mixed with -N=C=X-containing reactant or polymer therefrom528/69, Reactant contains a single -N=C=X group528/75Reactant contains at least one ethylenically unsaturated groupExaminersPrimary: Smith, Leonard E.Assistant: Page, Thurman K. International ClassesC08G 18/63 (20060101)C08G 18/81 (20060101) C09D 171/02 (20060101) C09D 171/00 (20060101) C08F 299/02 (20060101) C08F 299/00 (20060101) C08G 18/00 (20060101) C08G 65/00 (20060101) C08G 65/333 (20060101) AbstractAddition polymerizable polyethers having pendant ethylenically unsaturated urethane groups are usefully employed as flooring materials and in other applications utilizing radiation curable or chemically curable materials. Such urethane polyethers are advantageously prepared by reacting a polyether polyol such as a hydroxy terminated polypropylene glycol with an isocyanatoalkyl ester of an ethylenically unsaturated acid such as 2-isocyanatoethyl methacrylate. | |
