Polyurethane sealant based on poly(butylene oxide) polyols for glass sealing
US9816018B2 · kind B2 · utility
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Key dates
| Filing date | Mar 21, 2014 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Sep 2, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B80/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane glass sealant is made by reacting a poly(1,2-butylene oxide) polymer with a chain extender and a polyisocyanate. The poly(1,2-butylene oxide) polymer may be used as a mixture with up to 50% by weight of other polyols, including castor oil. The sealant is especially useful as a secondary sealant for an insulated glass unit (IGU).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.