Title:
人の手入れ用のビニルピロリドンとN-3-ジメチルアミノプロピルメタクリルアミドとの実質的に均一な共重合体の製造方法
Document Type and Number:
Japanese Patent JP4275731
Kind Code:
B2
Abstract:
A process is described for making substantially homogeneous copolymers comprising 20-99 % of vinyl pyrrolidone (VP) and 1-80 % of N-3,3-dimethylaminopropyl methacrylamide (DMAPMA), preferably 50-95 % VP and 5-50 % DMAPMA, and, most preferably, about 80:20, by weight, having a weight average molecular weight of about 200,000 to 1,500,000, as a clear, low viscosity aqueous solution of the homogeneous copolymer, at a 5-20 % solids level, preferably about 10-15 %, by weight of the solution, having a viscosity of about 5,000 to 80,000 cps, preferably about 10,000 to 70,000 cps. The solution obtained herein has lower viscosity and better clarity, and provides hair care products with enhanced curl retention (hold), when compared to non-homogeneous copolymers of the same composition, or related existing commercial products.
Inventors:
Riu Kou-Chan
Anderson Lowell Earl
Hardy Eugene Yi
LUVEN YACILL
Anderson Lowell Earl
Hardy Eugene Yi
LUVEN YACILL
Application Number:
JP52046696A
Publication Date:
June 10, 2009
Filing Date:
December 11, 1995
Export Citation:
Assignee:
ISP INVESTMENTS INC.
International Classes:
A61K8/00; C08F220/60; A61K8/81; A61Q5/06; C08F2/10; C08F226/10
Domestic Patent References:
| JP4500224A |
Foreign References:
| US4039734 |
Attorney, Agent or Firm:
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Kazuyuki Tomita
Shiro Fujitani
Kiyoshi Kuruma
Kazuyuki Tomita