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Patent
Celanese Emulsions GmbH | Date: 2015-07-30

In a continuous emulsion polymerization process, at least one monomer, an aqueous phase, and at least two different redox initiators are added to a continuous polymerization reactor comprising a first zone and a second zone. At least one redox initiator is added to the first zone and at least one redox initiator is added to the second zone.


Patent
Celanese Emulsions GmbH | Date: 2013-12-06

Disclosed are carpet products made using a first copolymer precoat adhesive to secure carpet fibers to a carpet backing or substrates in combination with a second copolymer skipcoat adhesive for securing a carpet scrim or other layer to a carpet backing. The first copolymer is a copolymer of a vinyl ester and ethylene and a cross-linking comonomer, and the second copolymer is a copolymer of styrene and butadiene. Such emulsions are stabilized with surfactant emulsifiers but are preferably substantially free of protective colloid stabilizers. The first copolymer exhibits an elongation value greater than 125% at 110 C.


Patent
Celanese Emulsions GmbH | Date: 2014-04-30

The invention relates to novel cross-linkable monomers that may be polymerized with ethylenically unsaturated comonomers to form cross-linkable copolymers. Said copolymers may particularly be used in the form of aqueous dispersions as formaldehyde-free adhesives or as coatings with good water resistance. The cross-linkable monomer is a compound in acid or salt form comprising an anion of the formula (I) and one or more cations for producing electrical neutrality, where R


Patent
Celanese Emulsions GmbH | Date: 2013-10-08

An adhesive composition comprises an aqueous dispersion of a polymer comprising at least one vinyl ester of a carboxylic acid having up to 20 carbon atoms; and a plasticizer comprising an ester of a polyol and a linear or branched aliphatic monocarboxylic acid having 3 to 20 carbon atoms in the molecule.


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.

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