Flame retardant carpet products with coating and/or adhesive layers formed from vinyl acetate/ethylene copolymer dispersions
US9624622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2011 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Feb 12, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23921
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Disclosed are carpet products comprising at least one flexible substrate and at least one coating and/or adhesive layer associated with the at least one flexible substrate. The coating and/or adhesive layer is formed from an aqueous composition comprising: A) an emulsifier-stabilized vinyl acetate/ethylene (VAE) emulsion copolymer dispersion and B) at least one particulate filler material selected from particulate inorganic compounds and particulate plastic material. The vinyl acetate/ethylene copolymer in the copolymer dispersion has a selected ethylene content or glass transition temperature. It is also preferably substantially free of cross-linkable co-monomer moieties which generate formaldehyde upon curing and preferably has a particle size, dw, ranging from about 50 to about 500 nm. The carpet product is substantially free of polyvinyl chloride and bitumen and exhibits a Class B1 flame-retardancy in accordance with DIN 4102-14, corresponding to a critical heat flux of ≧about 4.5 kW/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.