FINE AND UNIFORM METHYL VINYL ETHER-MALEIC ACID INORGANIC SALT COPOLYMERS AND THEIR USE IN ORAL CARE AND PHARMACEUTICAL APPLICATIONS

Title:

FINE AND UNIFORM METHYL VINYL ETHER-MALEIC ACID INORGANIC SALT COPOLYMERS AND THEIR USE IN ORAL CARE AND PHARMACEUTICAL APPLICATIONS

Document Type and Number:

WIPO Patent Application WO/2017/147887

Kind Code:

A1

Abstract:

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.

Inventors:

ULMBER HERBERT WILHELM (CN)
WANG JIANQIANG (CN)
WANG LONG (CN)
YUAN GUODONG (CN)
SUN JIANXIN (CN)
SUN XUDONG (CN)

Application Number:

PCT/CN2016/075552

Publication Date:

September 08, 2017

Filing Date:

March 03, 2016

Export Citation:

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Assignee:

BOAI NKY PHARMACEUTICALS LTD (CN)

International Classes:

C08F30/04; A61K6/083; A61K6/898; A61L15/12; C08F8/12; C08F8/44; C08F22/06; C08L5/04; C08L29/10; C08L31/06; C08L33/02; C08L39/06

Domestic Patent References:

WO2002048213A1

2002-06-20

Foreign References:

US5304616A	1994-04-19
CN105147527A	2015-12-16
US5525652A	1996-06-11
US4980391A	1990-12-25
US5298534A	1994-03-29
US5525652A	1996-06-11
US5304616A	1994-04-19
US6617374B1	2003-09-09
US20020111394A1	2002-08-15
CN105147527A	2015-12-16
US4782642A	1988-11-08

Other References: