Liquid (meth)acrylic syrup for impregnating a fibrous substrate, method for impregnating a fibrous substrate, and composite material produced after polymerisation of said pre-impregnated substrate
US10280271B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2014 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Jun 5, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a liquid (meth)acrylic syrup for impregnating a fibrous substrate. The invention especially relates to a viscous liquid syrup mainly containing methacrylic or acrylic components. The invention also relates to a method for producing such a syrup. The invention relates further to a method for impregnating a fibrous substrate or long fibers with said viscous liquid syrup. The invention also relates to a fibrous substrate pre impregnated with said syrup, which is useful for the production of mechanical or structured parts or products. The invention also relates to a production method for producing mechanical or structured parts or items and to three-dimensional mechanical or structured parts produced by said method. The invention allows significant reduction of the exothermic peak during the polymerization of the syrup, reduction of the residual monomer content at the end of the polymerization, and production of parts in a composite material without defects or with few defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.