Alkaline earth oxides and hydroxides to reduce nitrosamine formation from vulcanization accelerators
US5070130A · kind A · utility
6Cited by
23References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1990 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Sep 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cured rubber compositions having reduced nitrosamine content are made with small amounts by weight of an alkaline earth oxide or hydroxide which are utilized in association with secondary amine containing accelerators. The amount of nitrosamine in the cured rubber is often reduced to less than 20 parts per billion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.