Water-soluble polymer and polymer internal lubricant
US10954373B2 · kind B2 · utility
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2References
17Claims
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Key dates
| Filing date | May 21, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | May 21, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2500/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of making a water soluble polymer composition comprising blending a water soluble polymer with at least 15% by weight of the total weight of the composition of a hygroscopic salt to act as a lubricant to render the polymer extrudable and/or mouldable, wherein the water content of the composition is of less than 10% by weight of the total weight of the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.