Method of producing, using and composition of phenolic-type polymer modified asphalts or bitumens
US5256710A · kind A · utility
14Cited by
39References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Jul 17, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of producing cross-linked polymer modified asphalt or bitumen. The method includes the steps of combining by agitation polymers chosen from a group consisting of styrene rubber, styrene butadiene rubber, polydiene rubber and polyolefin diene rubber, 80 to 99% by weight of asphalt or bitumen, with the asphalt or bitumen at temperatures of 130.degree. to 230.degree. C. to form a homogeneous mixture. Thereafter, 0.05 to 2.0% by weight of asphalt of a reactive phenol-aldehyde resin is added to the mixture. The reaction is thereafter completed by continuing agitation of the mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.