| US 7,491,777 B2 | ||
| Polymer dispersions having improved water-vapor barrier action, their production and use for food coating | ||
| Martin Jakob, Kelkheim (Germany); and Heinrich Harrer, Frankfurt am Main (Germany) | ||
| Assigned to Celanese Emulsions GmbH, Kronberg/TS. (Germany) | ||
| Filed on Nov. 30, 2004, as Appl. No. 11/406. | ||
| Claims priority of application No. 103 56 779 (DE), filed on Dec. 02, 2003. | ||
| Prior Publication US 2005/0154123 A1, Jul. 14, 2005 | ||
| Int. Cl. C08F 218/08 (2006.01); C08F 222/14 (2006.01); C09D 131/04 (2006.01); A23C 19/16 (2006.01) | ||
| U.S. Cl. 526—213 [526/456] | 21 Claims |
| 1. An aqueous copolymer poly(vinyl ester) dispersion comprising
A) 100 parts by weight of a copolymer derived from
A1) from 34.9 to 65% by weight of vinyl esters of aliphatic, saturated carboxylic acids,
A2) from about 35 to 65% by weight of maleic esters and/or fumaric esters of monohydric aliphatic alcohols having a chain
length of C1-C18 and/or alpha-olefins having from 2 to 8 carbon atoms,
A3) from 0.1 to 10% of at least one comonomer having at least one stabilizing nonionic or ionic group, and also
A4) optionally other comonomers,
the sum of components A1), A2), and A3), and optionally A4) giving 100% by weight, based on the total weight of the copolymer,
wherein
B) from 0.1 to 4.5 parts by weight, based on the total amount of the monomers used, of at least one protecting colloid,
C) from 0.1 to 10 parts by weight, based on the total amount of the monomers used, of a nonionic emulsifier, and
D) optionally further additives suitable for coating foods.
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