Multi-functional unsaturated polyester polyols
US6916547B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2002 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | Jun 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel multifunctional unsaturated polyester polyols, UV-curable top coat formulations including these polyols, and a one-step process for preparing these polyols, are disclosed. Surface coverings and surface covering components including these top coat formulations are also disclosed. The polyols are generally formed by the ring opening polymerization of a lactone with a compound of the formula (R1)aR(OH)b, where a+b>2. R1 is a double bond-containing moiety such as allyl, vinyl, vinylidene, vinyl ether, acrylate, and the like. R is generally an alkyl, aryl, aralkyl, alkaryl, ether or ester group, including substituted versions thereof. R can be a polymer, including polymers with a plurality of functional groups. Examples of lactone groups which can be used include caprolactone, lactide and glycolide. The polyols can be used in 100% solids, solvent and water based radiation cured coatings, thermal cured coatings, dual cure (thermal with UV/e-beam, or UV/e-beam with thermal curing) coatings, and other types of coatings. These new resins enhance coating performance due to their multi-functional groups in the polymer chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.