CURING AGENT FOR COATING COMPOSITION FOR FORMING SELF-RESTORABLE LAYER COATING COMPOSITION HAVING THE SAME AND METHOD FOR COATING AUTOMOBILE EXTERIOR USING THE SAME

• Main Authors: KIM SUNG DO, AHN JAE BEOM, JOO HOON KWAN, LEE SUNG KYU, OH DAE GEUN
• Format: Patent
• Language: English; Korean
• Published: 14.05.2020
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

A curing agent for a coating composition for forming a self-restorable layer disclosed herein includes a polyisocyanate obtained by making a polyester polyol having a weight average molecular weight of 500 to 2,000 and a hydroxyl group content of 5 to 10% react with diisocyanate. 개시된 자기치유 도막을 형성하기 위한 코팅 조성물용 경화제는, 중량 평균 분자량이 500 내지 2,000이고, 수산기 함량이 5% 내지 10%인 폴리에스터 폴리올과 디이소시아네이트를 반응시켜 얻어진 폴리이소시아네이트를 포함한다.