Post-treatment of synthetic fiber fabrics
Patent 4629774 Issued on December 16, 1986. Estimated Expiration Date: 
September 3, 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.
September 3, 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 3311608 3386931 3475356 InventorsAssigneeApplicationNo. 06/771758 filed on 09/03/1985US Classes:527/301, With N=C=X reactant wherein X is chalcogen525/54.22, Previously formed solid polymer is derived from N=C=X reactant or contains N=C=X group wherein X is chalcogen527/302, Oxyalkylated carbohydrate8/115.54, Treating textiles or fibers from synthetic resin or natural rubber with chemical reactant8/115.66, Organic reactant contains plural nitrogen atoms nonbonded to each other8/115.67Reactant contains isocyanate groupExaminersPrimary: Foelak, MortonAssistant: Nutter, Nathan M. Attorney, Agent or FirmInternational ClassesC08G 18/48 (20060101)C08G 18/64 (20060101) C08G 18/10 (20060101) D06M 15/564 (20060101) D06M 15/37 (20060101) C08G 18/00 (20060101) D06M 15/01 (20060101) D06M 15/03 (20060101) Foreign Application Priority Data1984-09-10 JPAbstractSynthetic fiber-containing fabrics are post-treated by impregnating the fabrics with an aqueous solution or dispersion of a thermally reactive blocked isocyanate group-containing polysaccharide derivative and then baking the impregnated fabrics. The blocked isocyanate group-containing polysaccharide derivative is produced by reacting a hydroxy-alkylated natural polysaccharide with a polyisocyanate compound to form a urethane polymer having at least one free isocyanate group, and then blocking the free isocyanate group with a blocking agent. The hydroxyalkylate natural polysaccharide may be directly reacted with a polyisocyanate compound having at least one blocked isocyanate group. | |
