수계 폴리우레탄 수지조성물

• Main Authors: IMOTO TAKESHI, KOSAKA TATSUMI
• Format: Patent
• Language: Korean
• Published: 23.05.2019
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PHYSICS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES; WORKING-UP

(A)성분으로서 폴리올 화합물, 폴리이소시아네이트 화합물 및 음이온성기 도입제의 반응물인 우레탄 프리폴리머, 그리고 (B)성분으로서 블록화 폴리이소시아네이트 화합물을 함유하고, 블록화 이소시아네이트기의 함량이 고형분에 대하여 0.5~4mmol/g인 것을 특징으로 하는 수계 폴리우레탄 수지조성물. 상기 폴리올 화합물이 폴리카보네이트디올인 것이 바람직하다. 또한, (A)성분 중의 음이온성기의 함량이 (A)성분의 우레탄 프리폴리머량에 대하여 0.2~1.5mmol/g인 것도 바람직하다. Provided is an aqueous polyurethane resin composition characterized by including, as component (A), an urethane prepolymer which is a reactant of a polyol compound, a polyisocyanate compound, and an anionic group introducing agent, and as component (B), a blocked polyisocyanate compound, wherein the content of blocked isocyanate groups is 0.5 to 4 mmol/g based on the solid content. The polyol compound is preferably a polycarbonate diol. The content of the anionic groups in the component (A) is preferably 0.2 to 1.5 mmol/g based on the amount of the urethane prepolymer of the component (A).