Weatherable first surface over a tie layer over a pultruded substrate
US10946627B2 · kind B2 · utility
1Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2015 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Oct 23, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2605/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a multilayered pultruded structure having a weatherable cap layer over a pultruded substrate, adhered with an appropriate tie layer. The structure provides improved weatherability and surface quality for pultruded structures. The invention is especially useful to provide a weatherable pultruded polyurethane, with an acrylic or styrenic cap layer. The weatherable polyurethane (PU) pultrusion of the invention provides an increased modulus over polyester pultrusions, making the weatherable PU pultrusion useful in commercial applications, and applications requiring a higher transverse modulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.