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Fine and Uniform Methyl Vinyl Ether-Maleic Acid Inorganic Salt Copolymers and Their Use in Oral Care and Pharmaceutical Applications
Fine and Uniform Methyl Vinyl Ether-Maleic Acid Inorganic Salt Copolymers and Their Use in Oral Care and Pharmaceutical Applications
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机译:细而均匀的甲基乙烯基醚-马来酸无机盐共聚物及其在口腔护理和药物应用中的用途
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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.
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