Polyurea coatings for objects of metal glass wood or plastic
US4663201A · kind A · utility
17Cited by
6References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1986 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Apr 25, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/325
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The polyurea resulting from curing polyfunctional isocyanates having at least three groups with a N,N'-dialkylmethylenedianiline are broadly useful as coatings on the surface of objects made of metal, wood, glass, or plastic. Such coatings may be made based on either a 1-pack system or 2-pack system. 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.