Low VOC, moisture curable, two-component coating compositions based on organic polyisocyanates
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-018/18
C08G-018/30
C08K-005/00
B05D-003/04
출원번호
US-0064996
(1993-05-24)
발명자
/ 주소
Chandalia Kiran B. (Cheshire CT) Morgan Michael J. (Torrington CT) O\Connor James M. (Branford CT) Goldstein Stephen L. (Cheshire CT)
출원인 / 주소
Olin Corporation (Cheshire CT 02)
인용정보
피인용 횟수 :
27인용 특허 :
0
초록▼
This invention relates to a process for coating a substrate comprising contacting the substrate with a low volatile organics, moisture curable, two-component coating composition comprising an admixture of an A-side and a B-side, said A-side comprising an aliphatic polyisocyanate having an isocyanate
This invention relates to a process for coating a substrate comprising contacting the substrate with a low volatile organics, moisture curable, two-component coating composition comprising an admixture of an A-side and a B-side, said A-side comprising an aliphatic polyisocyanate having an isocyanate index relative to the number of isocyanate-reactive groups in said coating composition of at least about 200, preferably at least about 300, more preferably at least about 500, said B-side comprising a tertiary amine catalyst and optionally an isocyanate-reactive compound selected from the group consisting of monoahls, polyols, imines, oxazolidines, and combinations thereof, said coating composition optionally containing a solvent in an amount of less than about 45%, based upon the weight of the polyisocyanate in said coating composition, said coating composition having a viscosity as measured by ZAHN cup 2 of less than about 200 seconds, said composition being essentially free of any volatile mono- and di-isocyanates, and said composition being moisture curable upon exposure to atmospheric moisture. Also claimed is the coating composition itself.
대표청구항▼
A process for coating a substrate comprising contacting the substrate with a low volatile organics, moisture curable, two-component coating composition comprising an admixture of an A-side and a B-side, said A-side comprising a polyisocyanate selected from the group consisting of aliphatic polyisocy
A process for coating a substrate comprising contacting the substrate with a low volatile organics, moisture curable, two-component coating composition comprising an admixture of an A-side and a B-side, said A-side comprising a polyisocyanate selected from the group consisting of aliphatic polyisocyanates, cycloaliphatic polyisocynates, and combinations thereof, and containing at least one moiety selected from the group consisting of biuret, isocyanurate, uretidione, urethane, and allophanate moieties, and combinations thereof, and having an isocyanate index relative to the number of isocyanate-reactive groups in said coating composition of at least about 200, said B-side comprising a tertiary amine catalyst and an isocyanate-reactive compound selected from the group consisting of monoahls, said coating composition containing a solvent in an amount of between 0% and 45%, based upon the weight of the polyisocyanate in said coating composition, said coating composition having a viscosity as measured by ZAHN cup 2 of less than about 200 seconds, said composition being essentially free of any volatile mono- and di-isocyanates, and said composition being moisture curable upon exposure to atmospheric moisture.
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