Polyurethane systems having non-sag and paintability
US8697188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2012 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Jul 26, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2190/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A two part construction sealant or adhesive is provided with the properties of non-sag, low modulus, high elongation, and good paint adhesion. The sealant or adhesive is prepared using at least one of a secondary amine or an acrylate monomer, and a diol, triol and/or tetrol having a nominal weight average molecular weight of between 1,000 and 6,000 in the base component of the formulation, and aromatic diisocyanate monomer or polyisocyanate and an isocyanate terminated prepolymer of aromatic diisocyanate or polyisocyanate and polyol in the activator component, the components of Part A to Part B mixed at a weight ratio of 5:1 to 1.8:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.