Low VOC polyurethane adhesive
US11584872B2 · kind B2 · utility
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9References
8Claims
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Key dates
| Filing date | Oct 5, 2021 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Oct 5, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/1565
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A low-VOC, two-component polyurethane adhesive is provided. The polyurethane adhesive has an A-side that includes an isocyanate and a non-reactive plasticizer, and a B-side that includes an aliphatic polyester polyol, a non-polyester polyol, and a urethane catalyst. The A-side and the B-side are reacted at a volume ratio of 1:1 and formulated at an NCO/OH index within the range of 0.90 to 1.10. The polyurethane adhesive is solvent-free and is particularly suitable for adhering a polymeric membrane to a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.