Prepolymers having imide groups
US5403907A · kind A · utility
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9Claims
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Key dates
| Filing date | Aug 11, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Aug 11, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/127
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Prepolymers having imide groupings and process for their preparation, for use in the production of resins capable of hardening under ionizing radiation. The prepolymers are derived from the reaction in a homogeneous liquid medium, at a temperature of between 50.degree. and 250.degree. C. of, firstly, imide grouping-generating reagents consisting of a least two specific maleimides of different kinds, and, secondly, two additional reagents, composed of a specific acrylate reagent and a specific vinyl compound other that an acrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.