公开(公告)号：US5057312A

公开(公告)日：1991-10-15

申请号：US208052

申请日：1988-06-17

申请人： Bernard Langla ,  Jean Mondet ,  Christos Papantoniou

发明人： Bernard Langla ,  Jean Mondet ,  Christos Papantoniou

IPC分类号： A61K8/00 ,  A61K8/34 ,  A61K8/81 ,  A61Q3/02

CPC分类号： A61Q3/02 ,  A61K8/8152

摘要： This nitrocellulose-free varnish contains at least one resin in a solvent system for varnishes, and is characterized in that the said resin is a copolymer containing units resulting from the copolymerization:(1) of 20 to 70% of at least one alkyl acrylate or methacrylate of general formula: ##STR1## in which: R' denotes a hydrogen atom or a methyl radical, andR denotes a saturated, linear or branched hydrocarbon chain containing from 1 to 6 carbon atoms, and(2) of 30 to 80% of at least one hydroxyalkyl acrylate or methacrylate of general formula: ##STR2## in which: R.sub.1 denotes a hydrogen atom or a methyl radical and R.sub.2 denotes a linear or branched hydrocarbon chain containing from 2 to 4 carbon atoms and 1 or 2 hydroxyl(s), it being understood that the said copolymer cannot contain more than 30% of units derived from the copolymerization of an alkyl acrylate and/or a hydroxyalkyl acrylate, the viscosity of the copolymer at a concentration of 28% in ethyl acetate at 25.degree. C. being higher than 0.1 Pa s.

摘要翻译： 该无硝基纤维素清漆在清漆的溶剂体系中含有至少一种树脂，其特征在于所述树脂是含有由共聚得到的单元的共聚物：（1）20至70％的至少一种丙烯酸烷基酯或 甲基丙烯酸酯，其通式如下：其中：R'表示氢原子或甲基，R表示含有1至6个碳原子的饱和直链或支链烃链，和（2）30 至80％的至少一种通式如下的羟烷基丙烯酸酯或甲基丙烯酸酯：其中：R1表示氢原子或甲基，R2表示含有2至4个碳原子的直链或支链烃链， 1或2个羟基，应理解所述共聚物不能含有来自丙烯酸烷基酯和/或丙烯酸羟烷基酯的共聚物的30％以上的共聚物，其浓度为28％的共聚物的粘度 乙酸乙酯在25℃ 高于0.1Pa s。