Process for preparation of low-dusting epoxy curing agents based on trimellitic anhydride
US4490511A · kind A · utility
3Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1984 |
| Grant date | Dec 25, 1984 |
| Priority date | — |
| Expiry date | Feb 28, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a low-dusting anhydride curing agent blend for epoxy resins comprising a solid acid anhydride (trimellitic anhydride) and a normally liquid acid anhydride (methyl hexahydrophthalic anhydride. The invention further provides processes for preparing the anhydride blends and to curable epoxy compositions thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.