Method of producing mixtures of rubber or rubber-like material, and carbon black
US4876297A · kind A · utility
3Cited by
4References
13Claims
0Family size
Inventor
Key dates
| Filing date | Jul 15, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Jul 15, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2321/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing a mixture that contains rubber or rubber-like material, and carbon black. The method includes the steps of adding to the rubber or rubber-like material a portion only of the intended total quantity of carbon black, thereupon preheating the above in a high-frequency alternating field, and subsequently adding in the remainder of the intended total quantity of carbon black. Expediently, approximately up to a maximum of one-third of the intended total quantity of carbon black is added to the rubber prior to the preheating step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.