COPOLYMÈRES FINS ET UNIFORMES DE SELS INORGANIQUES D'ÉTHER VINYLIQUE DE MÉTHYLE-ACIDE MALÉIQUE, ET LEUR UTILISATION DANS LES APPLICATIONS DE SOINS BUCCAUX ET PHARMACEUTIQUES
ULMER, Herbert Wilhelm,WANG, Jianqiang,WANG, Long,YUAN, Guodong,SUN, Jianxin,SUN, Xudong
申请号：
EP16892078
公开号：
EP3423500A4
申请日:
2016.03.03
申请国别(地区):
EP
年份:
2019
代理人:
摘要：
The invention relates to fine and uniform copolymer powders of partial mixed metal salts of lower alkyl vinyl ether-maleic acid copolymers having a defined particle size distribution. In particular； it relates to powders that are suitably used in the areas of oral care and pharmaceuticals and to methods for preparing the powders. Provided is a composition of powders of partial mixed metal salts of lower alkyl vinyl ether-maleic acid copolymers having: (i) a Dv50 of less than or equal to 25 microns； a Dv90 of less than or equal to 50 microns； and (ii) a particle uniformity reflected by a Dv90/Dv10 ratio of less than or equal to 10.
