Vinyl ester/ethylene copolymer dispersions prepared by continuous tubular emulsion polymerization for coating carpet products
AssigneeCelanese Emulsions GmbH
InventorsLizandra B.R. de Castro, David Adams
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Abstract
Disclosed are aqueous compositions suitable for use as binders or adhesives in carpet products. Such compositions, prior to being applied to carpet substrates and cured, comprise vinyl ester/ethylene copolymer dispersions, along with other optional comonomers. The compositions are made by a continuous emulsion polymerisation that utilises a continuous loop reactor with a secondary line section. Carpet products which utilise such coating compositions to provide binder and/or adhesive layer within the carpet are also disclosed.
Claims14
A carpet coating composition comprising:
- an aqueous dispersion of a copolymer comprising polymerized co-monomers vinyl acetate and ethylene, where the dispersion is prepared by a continuous emulsion polymerization in a reactor comprising a closed loop section and a secondary line section.
A carpet coating composition comprising:
- an aqueous dispersion of a copolymer comprising polymerized monomers vinyl acetate and ethylene, where the dispersion is prepared by a continuous emulsion polymerization in a polymerization reactor comprising a first section with a circulation loop with one or more inlets for raw material, a pump for circulating a reactor charge within the circulation loop, and a secondary line section not forming a closed loop connected to a discharge of the first section.
A carpet comprising:
- a carpet backing or substrate,
- carpet fibers, and
- a carpet coating composition which comprises an aqueous dispersion of a copolymer comprising polymerized monomers vinyl acetate and ethylene, where the dispersion is prepared by a continuous emulsion polymerization in a continuous polymerization reactor comprising a closed loop section and a secondary line section.
A carpet product comprising at least one flexible substrate and at least one coating and/or adhesive layer associated with said at least one flexible substrate, said coating and/or adhesive layer being formed from an aqueous composition comprising:
- A) an aqueous dispersion of a copolymer comprising polymerized co-monomers vinyl acetate and ethylene, where the dispersion is prepared by a continuous emulsion polymerization in a reactor comprising a closed loop section and a secondary line section;
- and
- B) at least one particulate filler material selected from particulate inorganic compounds and particulate plastic material.
Dependencies are inferred from the claim text.