Acoustic panel made of plaster
US9868269B2 · kind B2 · utility
3Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2015 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Mar 6, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2607/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A plaster-based board includes a plaster-based core positioned between two sheets of paper or nonwoven fabric, wherein the core contains at least one polymer selected from polyvinyl butyral (PVB), copolymers of vinyl acetate and an olefin, which copolymers have a glass transition temperature that varies from −10° C. to +25° C., terpolymers of vinyl acetate, an olefin and a vinyl ester monomer, terpolymers of vinyl acetate, a vinyl ester monomer and a (meth)acrylate monomer, and copolymers of vinyl acetate and an acrylic monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.