Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1989-06-19
1990-10-02
Welsh, Maurice J.
Coating processes
With post-treatment of coating or coating material
Heating or drying
528 48, 528 49, 528 55, 528 58, C08G 1818
Patent
active
049606204
ABSTRACT:
The polyurethanes and polyureas resulting from ambient-temperature-curing isocyanate-terminated urethane prepolymers with N-alkyl-substituted aromatic polyamines and, optionally, with an added polyol, but primary amine-free, in the presence of a combination catalyst comprising an aliphatic carboxylic acid, e.g., adipic, stearic, oleic acids, and an organometallic catalyst containing, e.g., tin, mercury, bismuth, etc. are broadly useful as coating on the surface of objects made of metal, wood, glass, plastic or masonry materials such as concrete, bricks, etc. or as castings cured in situ. One-shot and quasi-prepolymer systems are also disclosed. The diamine N,N'-di-(sec-butyl)-4,4'-methylenedianiline is a particularly useful diamine.
REFERENCES:
patent: 4513133 (1985-04-01), Dominquez
patent: 4578446 (1986-03-01), House et al.
patent: 4584362 (1986-04-01), Leckart et al.
patent: 4630963 (1986-12-01), Wyman
patent: 4663201 (1987-05-01), House et al.
patent: 4709512 (1987-11-01), Scott et al.
patent: 4714512 (1987-12-01), House et al.
Also presented in the parent case is the following document: R. Heath, Urethanes Technology, Mar. 1985, pp. 17-20.
House David W.
Scott, Jr. Ray V.
Hall Jack H.
McBride Thomas K.
Spears Jr. John F.
UOP
Welsh Maurice J.
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