公开(公告)号：US5800873A

公开(公告)日：1998-09-01

申请号：US316784

申请日：1994-10-03

申请人： Nicolaas Leonardus Maria Enthoven ,  Jurgen Erwin Lemke ,  Peter Eric van Rijn ,  Henricus Peturs Gemma van Sommeren

发明人： Nicolaas Leonardus Maria Enthoven ,  Jurgen Erwin Lemke ,  Peter Eric van Rijn ,  Henricus Peturs Gemma van Sommeren

IPC分类号： C08F220/12 ,  C08F265/06 ,  C09J151/00 ,  B05D3/00

CPC分类号： C09J151/003 ,  C08F220/12 ,  C08F265/06

摘要： The present invention relates to a process for the production of sealed packaging containers of plastics films, using a sealing coating based on an aqueous dispersion or solution of acrylate copolymer, where the aqueous dispersion of acrylate copolymer is prepared by emulsion polymerization offrom 1 to 15% by weight of .alpha.,.beta.-ethylenically unsaturated carboxylic acids, from 40 to 69% by weight of alkyl esters of acrylic acid having 1-12 carbon atoms in the alkyl radical, from 0 to 55% by weight of alkyl esters of methacrylic acid having 1-12 carbon atoms in the alkyl radical and/or vinylaromatics, and from 0 to 25% by weight of further monomers, the sum of the monomers in each case being 100% by weight. The glass transition temperature being not more than 50.degree. C. and the number-average molecular weight of the acrylate copolymer being 8000-12,000; in the first stage from 5 to 20% by weight of the monomer mixture are polymerized and preferably after renewed addition of emulsifier in the second stage the residual monomer mixture is polymerized in the presence of the polymer obtained in the first stage, the resulting reaction mixture is at least partially neutralized, conventional auxiliaries and additives are added if desired, and the resulting sealing coating is applied to the plastics film and dried.

摘要翻译： 本发明涉及使用基于丙烯酸酯共聚物的水性分散体或丙烯酸酯共聚物溶液的密封涂料来生产塑料薄膜的密封包装容器的方法，其中丙烯酸酯共聚物的水分散体通过1至15的乳液聚合制备 重量％的α，β-烯属不饱和羧酸，40至69重量％的烷基中具有1-12个碳原子的丙烯酸烷基酯，0至55重量％的甲基丙烯酸烷基酯 在烷基和/或乙烯基芳族化合物中具有1-12个碳原子，和0至25重量％的其它单体，每种情况下单体的总量为100重量％。 玻璃化转变温度不超过50℃，丙烯酸酯共聚物的数均分子量为8000-12,000; 在第一阶段中，将5至20重量％的单体混合物进行聚合，优选在第二阶段更新加入乳化剂之后，在第一阶段获得的聚合物存在下使残余单体混合物聚合，得到的反应混合物 至少部分中和，如果需要，加入常规的助剂和添加剂，并将所得密封涂料施加到塑料膜上并干燥。