Composite polymer modifiers
US11168205B2 · kind B2 · utility
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15References
7Claims
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Assignee
Inventor
Key dates
| Filing date | May 3, 2018 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/139
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to composite polymer modifiers for thermoplastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.