Polyisocyanate cross-linked polymers containing cellulosic component
Patent 4404347 Issued on September 13, 1983. Estimated Expiration Date: 
December 29, 2001. 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.
December 29, 2001. 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 3475356 Acrylic graft copolymers and coating compositions thereof Patent #: 4251404 InventorsAssigneeApplicationNo. 06/335476 filed on 12/29/1981US Classes:527/300, FROM CARBOHYDRATE OR DERIVATIVE AS A REACTANT527/301, With N=C=X reactant wherein X is chalcogen527/311With di- or higher ester of polycarboxylic acid; or with polycarboxylic acid or derivative and a compound containing two or more hydroxyl groups or salts thereof as reactantsExaminersPrimary: Kight, III, JohnAssistant: Nutter, Nathan M. Attorney, Agent or FirmInternational ClassesC08G 18/00 (20060101)C08G 18/10 (20060101) C09D 101/08 (20060101) C09D 101/00 (20060101) C08G 18/64 (20060101) Foreign Application Priority Data1981-01-09 JPAbstractCellulose derivatives such as cellulose nitrate, cellulose acetate, cellulose acetate butyrate or ethyl cellulose may be cross-linked with a synthetic film-forming resin such as acrylic resin, alkyd resin, epoxy resin, aminoplast resin or mixtures of these resins by first reacting said cellulose derivative with a polyisocyanate compound to give an addition-reaction product containing free isocyanate groups, then reacting the resulting product with said film-forming resin. The resulting cross-linked hybrid polymers exhibit remarkably advantageous properties as a film-forming component for use in lacquer type coating compositions.Field of SearchFROM CARBOHYDRATE OR DERIVATIVE AS A REACTANTWith N=C=X reactant wherein X is chalcogen With di- or higher ester of polycarboxylic acid; or with polycarboxylic acid or derivative and a compound containing two or more hydroxyl groups or salts thereof as reactants With nitrogen-containing reactant Ethylenically unsaturated reactant Unsaturated carboxylic acid or derivative reactant With heterocyclic reactant other than carbohydrate | |
