Two-part polyurethane adhesives made using isocyanate-terminated quasi-prepolymers based on poly(butylene oxide)
US10428251B2 · kind B2 · utility
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Key dates
| Filing date | Jun 2, 2016 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Nov 24, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J175/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Two-component polyurethane adhesives include a polyol component and a polyisocyanate component. The polyol component includes a polyether polyol and an aliphatic diol chain extender. The polyisocyanate component includes an isocyanate prepolymer made by reacting an aromatic polyisocyanate with a poly(butylene oxide) polyol. When cured, the adhesive is highly resistant to heat and humidity, and exhibits an unexpectedly high modulus and tensile strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.