Polyurethane pressure-sensitive adhesive and laminates therefrom
US4145514A · kind A · utility
6Cited by
8References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1977 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Sep 1, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31591
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A pressure-sensitive adhesive comprises the reaction product of (A) at least one alkyl acrylate liquid polymer containing both terminal and random hydroxyl functionality, and (B) at least one prepolymer of a polyester glycol or a polyalkylene ether glycol with an excess amount of an aromatic diisocyanate. The adhesive has a full range of desirable adhesive properties, including excellent rolling ball tack, 180.degree. peel adhesion and shear adhesion. The adhesive is useful in both solvent and solvent-free systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.