Process for preparing bitumen/rubber compositions
US6025418A · kind A · utility
5Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Feb 13, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An elastomer is blended with bitumen, an alkaline compound is then added which is soluble in the bitumen, and to this mixture is added 0.01 to 0.1% by weight of a mixture of vulcanizing agents comprising elemental sulphur and a sulphur-containing derivative of the form: ##STR1## where R.sub.1 and R.sub.2 are C.sub.1 to C.sub.4 alkyl radicals or, together R.sub.1 and R.sub.2 have the formula ##STR2## and where M, which is optional, is Zn, Ba or Cu.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.