申请人:DENTSPLY DETREY GmbH
公开号:EP3231412A2
公开(公告)日:2017-10-18
The present invention relates to an aqueous dental glass ionomer composition comprising
(A) a reactive particulate glass,
(B) a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and pendant groups having one or more polymerizable carbon-carbon double bonds, wherein the polymerizable polymer is obtainable by a process comprising
a) a step of polymerizing a mixture comprising
(i) a first polymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and optionally
(ii) a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary hydroxyl and/or amino group(s) and a second polymerizable organic moiety, for obtaining an water-soluble polymer;
b) a step of coupling to the water-soluble polymer a compound having a polymerizable moiety and a functional group reactive with an optionally protected carboxylic acid group of repeating units derived from the first polymerizable monomer or an optionally protected hydroxyl and/or amino group of repeating units derived from the second copolymerizable monomer in the water-soluble polymer obtained in step a), wherein the optionally protected carboxylic acid group and the optionally protected hydroxyl and/or amine group are deprotected, so that polymerizable pendant groups are linked to the backbone by ester groups, urethane groups and/or amide groups,
and, optionally, a step of deprotecting the protected carboxylic acid group after step a) or step b), for obtaining a polymerizable polymer;
(C) a hydrolysis-stable, water-soluble monomer having a single polymerizable double bond and optionally a carboxylic acid group or hydroxyl group; and
(D) a polymerization initiator system.
本发明涉及一种水性牙科玻璃离子聚合物组合物,其中包括
(A) 反应性微粒玻璃、
(B) 包含酸性基团的水溶性可聚合聚合物,该酸性基团在胶结反应中与微粒玻璃反应,其中可聚合聚合物具有聚合物主链和具有一个或多个可聚合碳碳双键的悬垂基团,其中可聚合聚合物可通过以下工艺获得
a) 聚合混合物的步骤,混合物包括
(i) 第一可聚合单体,包含至少一个任选受保护的羧酸基团和第一可聚合 有机分子,和任选地
(ii) 第二种可共聚单体,包括一个或多个任选受保护的伯羟基和/或仲羟基和/或 氨基以及第二种可聚合有机分子,以获得水溶性聚合物;
b) 将一种化合物偶联到水溶性聚合物中,该化合物具有可聚合分子和官能团,官能团与步骤 a) 中得到的水溶性聚合物中第一可聚合单体衍生的重复单元的受选择保护的羧基或第二可共聚单体衍生的重复单元的受选择保护的羟基和/或氨基反应、其中任选受保护的羧酸基团和任选受保护的羟基和/或胺基被脱保护,从而使可聚合的悬垂基团通过酯基、氨基甲酸酯基团和/或酰胺基团与主链相连、
在步骤 a) 或步骤 b) 之后,可选择对受保护的羧酸基团进行脱保护,以获得可聚合聚合物;
(C) 具有单个可聚合双键和可选羧酸基团或羟基的水解稳定的水溶性单体;以及
(D) 聚合引发剂系统。