Melt-mixing thermoplastic and epoxy resin above Tg or Tm of thermoplastic with curing agent
US6197898A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1997 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Nov 18, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2363/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a polymer composition useful as a prepreg comprises (a) melt-mixing at least one thermoplastic polymer above the glass transition temperature or melt temperature of the thermoplastic polymer with either (i) an uncured epoxy resin or (ii) an epoxy curing agent or a catalyst; (b) melt-mixing above the glass transition temperature or melt temperature of the thermoplastic polymer, the other of (i) an uncured epoxy resin or (ii) an epoxy curing agent or a catalyst to form a substantially uncured but essentially curable and/or polymerizable composition; (c) optionally forming a shaped product from the melt-mixed composition of (b); and (d) fast-curing and/or fast-polymerizing the optionally formed shaped product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.