Process for controlled degradation of propylene polymers
US3940379A · kind A · utility
26Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1973 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | May 21, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is provided for the degradation of propylene polymers comprising contacting a propylene polymer exhibiting a first melt flow rate with oxygen or an oxygen-containing gas and an organic or inorganic peroxide; melting and working and resulting mixture in a high shear zone thereby degrading said propylene polymer; and recovering an essentially odor free propylene polymer exhibiting a second melt flow rate higher than said first melt flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.