Solid siloxane polymers as delivery agents for siloxane tackifying resins
US11492491B2 · kind B2 · utility
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41References
21Claims
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Key dates
| Filing date | Aug 13, 2018 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Oct 28, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/455
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Blend compositions include at least one polydiorganosiloxane polyoxamide copolymer, and at least 70% by weight of at least one silicone tackifying resin. The blend composition is non-tacky at room temperature up to a temperature of at least 100° C. The polydiorganosiloxane polyoxamide copolymer can be a linear or branched copolymer. The blend compositions provide solid, non-powdery, and non-tacky delivery vehicles for silicone tackifying resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.