Rubber processing aid
US4157320A · kind A · utility
12Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1978 |
| Grant date | Jun 5, 1979 |
| Priority date | — |
| Expiry date | Mar 20, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/925
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A particulate, relatively free-flowing rubber processing aid capable of imparting release properties and improved flow characteristics to rubber during compounding and molding of the rubber, comprises petrolatum and particulate clay in proportions of petrolatum to clay of from about 1:4 to about 4:1. The amount of processing aid which is effective to impart improved release and flow properties is from about 0.1 to about 5 weight percent of the total rubber compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.