Process for manufacturing petroleum resins for adhesive thermofusible compositions
US4173699A · kind A · utility
2Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1978 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Mar 10, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J157/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for manufacturing petroleum resins for adhesive thermofusible compositions, having a softening point comprised between 60.degree. and 110.degree. C., a molecular weight comprised between 700 and 1,500 and a Gardner color index less than 9, consisting in polymerizing a C.sub.5 hydrocarbon distillation cut issuing from a steam cracking of naphtha or gas-oil and containing less than 5% isoprene and less than 1% cyclopentadiene, in the presence of a Friedel-Crafts catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.