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Title:
VINYL ESTER/ETHYLENE COPOLYMER DISPERSIONS FOR USE IN ADHESIVE FORMULATIONS
Document Type and Number:
WIPO Patent Application WO/2013/001379
Kind Code:
A3
Abstract:
An aqueous dispersion of a vinyl ester/ethylene copolymer is prepared by emulsion copolymerization of a monomer mixture comprising a vinyl ester, ethylene and a polyvinyl alcohol stabilizing system consisting essentially of (a) 0.5 to 3 wt % based on the total monomer weight of a first polyvinyl alcohol having a degree of hydrolysis of at least 98 mole% and (b) 1 to 4 wt % based on the total monomer weight of a second polyvinyl alcohol having a degree of hydrolysis of 85 to 90 mole % and a weight average molecular weight of at least 85,000 g/mol.

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Inventors:
SCHULTE JOERG LUDWIG (DE)
FAUST HANS UWE (DE)
MADL ALEXANDER (DE)
Application Number:
PCT/IB2012/002110
Publication Date:
February 21, 2013
Filing Date:
June 07, 2012
Export Citation:
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Assignee:
CELANESE EMULSIONS GMBH (DE)
SCHULTE JOERG LUDWIG (DE)
FAUST HANS UWE (DE)
MADL ALEXANDER (DE)
International Classes:
C08F261/04; C08F218/04; C09J131/04
Foreign References:
US4521561A1985-06-04
US5633334A1997-05-27
EP0279384A21988-08-24
US5629370A1997-05-13
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