U.V. Curable poly(ether-urethane) polyacrylates and wet-look polymers prepared therefrom
US4065587A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | May 11, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/755
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyether-urethane polymers, prepared from the reaction of specific molar ratios of diisocyanates with specific mixtures of polyetherdiols, glycols, triols and tetraols, and having 4-10 reactive isocyanate groups are further reacted with hydroxyalkyl acrylates through the free isocyanate functionality to provide polymers having from about 4-10 acrylates units per each mole unit of polyurethane chain. Such polymers when crosslinked under ultraviolet radiation in the presence of photosensitizers, specific reactive monofunctional acrylate solvents and multifunctional acrylate cross-linking agents cure without air inhibition to yield superior "wet look" finishes especially useful for coating metal, wood and floor tile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.