Polyurethane compositions with low exposure to free monomeric MDI isocyanate content during spray application
US12043769B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Oct 18, 2018 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Feb 17, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2101/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Sprayable polyurethane compositions, in the form of spray polyurethane foams or low rise adhesives, when spray applied in the area of spray application at any given time, having monomeric MDI contents in the spray application area of no more than 20 parts per billion as measured in accordance with PEL Method 47 and having a viscosity of from 100 to 3,000 cP at 25° C. according to ASTM D2196.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.