Decorative sheet containing a polyurethane layer and structure
US9695338B2 · kind B2 · utility
5Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2013 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Jun 4, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2896
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a decorative sheet including a surface layer and an adhesion layer, the surface layer is a polyurethane layer obtained by crosslinking using a curing agent and coating and drying of a straight chain polyurethane resin having a specified molecular weight and acid value, the polyurethane resin being obtained by reaction of a diamine chain extender agent with a polyurethane prepolymer obtained by reaction of a polycarbonate diol having an alicyclic structure, an aliphatic diol having a carboxyl group, and 4,4′-cyclohexylmethandiisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.