Chemically modified asphalts and glass fibers treated therewith
US4528241A · kind A · utility
5Cited by
10References
5Claims
0Family size
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Key dates
| Filing date | Feb 6, 1984 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Feb 6, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2992
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved chemically modified asphalts are provided of the type which is the reaction product of asphalt, a vinyl aromatic monomer and a rubbery polymer. The improved compositions are capable of impregnating glass fiber bundles and have increased elastic recovery rates, increased viscosity stability, less tack and lower viscosity. Such improved compositions are obtained by employing a styrene-butadiene thermoplastic rubber copolymer as a coreactant with the asphalt and vinyl aromatic monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.