Glass mat laminate comprised of polymerizable cyclic polyester oligomers suitable for composites with a class-A surface
US7972685B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2005 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Aug 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249946
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composition of a fiber reinforced multi-layered laminate that when compression-molded forms a composite having a Class-A surface that is resin rich. The fiber reinforced multi-layered laminate has an outer layer of a cyclic polyester oligomer containing a latent polymerization catalyst; a glass mat; a core layer of a cyclic polyester oligomer containing a latent polymerization catalyst; a second glass mat, and another outer layer of a cyclic polyester oligomer containing a latent polymerization catalyst. When compression molded, the combination of heat and pressure force the core layer through the permeable glass mats and toward the surface. The latent polymerization catalyst initiates polymerization of the cyclic polyester oligomer forming a Class-A surface that is resin rich. The core layer of a cyclic polyester oligomer thoroughly permeates the reinforcing fiber forming a composite having a middle, with a nearly uniform mixture of reinforced glass fiber and thermoplastic in situ polymerized resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.