Thermoplastic roofing membranes adapted for adhesion to polar adhesives
US12220898B2 · kind B2 · utility
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31References
11Claims
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Key dates
| Filing date | Aug 7, 2019 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Jun 16, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of preparing a thermoplastic roofing membrane, the method comprising (i) extruding a composition including a thermoplastic polymer and a mineral filler to form an extrudate; (ii) forming the extrudate into a sheet having first and second planar surfaces; (iii) allowing the sheet to at least partially cool; and (iv) mechanically treating the first planar surface of the sheet to thereby expose the mineral filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.