Humidity resistant aqueous urethane resins based on hydrophobic polyhydroxy compounds and coatings
US6087444A · kind A · utility
3Cited by
23References
20Claims
0Family size
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Key dates
| Filing date | Sep 20, 1996 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Sep 20, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A water reducible polyurethane resin for use in coating compositions is provided with humidity resistance at relatively low cost by employing a urethane prepolymer which is the reaction product of (i) a polyisocyanate, (ii) a polyhydroxy compound which is the reaction product of an organic acid and an epoxy compound, at least one of which includes a hydrocarbon group of at least six carbon atoms, and (iii) a monomer having an anionic group and functionality reactive with isocyanate. Preferred embodiments employ C.sub.36 dimer diacid and the propylene oxide ester of neodecanoic acid to make the polyhydroxy compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.