Corrosion-resistant non-woven for pipe liner pultrusion applications
US11401639B2 · kind B2 · utility
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Key dates
| Filing date | Aug 31, 2017 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Oct 16, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/546
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A non-woven chopped fiber mat includes a mixture of glass fibers and synthetic fibers. The non-woven mat is formed using a binder composition that includes a binder resin, a coupling agent, and a corrosion inhibitor. The non-woven mat is non-corrosive and resistant to volatile unsaturated monomers such as styrene, but still remains fully compatible with solvent-containing polyester resins, such that it can be used in various pultruded products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.