Crystalline propylene polymers and copolymers in the form of spherical particles at high porosity
US5236962A · kind A · utility
33Cited by
11References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 13, 1992 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Aug 13, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Crystalline polymers and copolymers of propylene in the form of spherical particles having a porosity (expressed in percentage of voids) greater than 15%. These polymers are useful in the preparation of masterbatch containing significant quantities of additives and/or pigments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.