Polyureas as coatings

Details Polyureas as coatings Polyureas as coatings

1987-04-17

1988-11-08

Page, Thurman K.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 58, 528 64, 528 65, 528 66, C08G 1808

Patent

active

047835176

ABSTRACT:
The polyureas resulting from curing polyfunctional isocyanates having at least three isocyanate groups with a N,N'-dialkylmethylenedianiline are broadly useful as coatings on the surface of objects made of metal, wood, glass, or plastic. The diamine N,N'-di(2-butyl)4,4'-methylenedianiline is a particularly useful diamine. Biurets are an especially desirable class of polyisocyanates for the polyureas of this invention, particularly those arising from polymethylene diisocyanates and aromatic diisocyanates.

REFERENCES:
patent: 3904796 (1975-09-01), Zorn et al.
patent: 3954825 (1976-05-01), Touhey, Jr. et al.
patent: 4303773 (1981-12-01), Ganster et al.
patent: 4365670 (1982-12-01), McLaughlin
patent: 4515923 (1985-05-01), Fauss et al.
patent: 4590254 (1986-05-01), Chang et al.
patent: 4595445 (1986-06-01), Hombach et al.

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