发明名称 |
Polysiloxane block copolymers in topical cosmetic and personal care compositions |
摘要 |
A process for making a polysiloxane block copolymer which is built up from units of the formula [A] [B], in which A is a polymeric block built up from radically polymerisable monomer, and B is a polysiloxane block, the process comprising the steps of polymerising a radically polymerisable monomer in the presence of an atom transfer radical initiator to form an polymer which is end-functionalized with a leaving group capable of nucleophilic substitution by nucleophilic end-groups on a polysiloxane, and reacting the polymer with a polysiloxane having nucleophilic end-groups so that a polysiloxane block copolymer is formed via a nucleophilic displacement reaction between the end-groups on the polysiloxane and leaving groups on the polymer respectively. Also provided is a cosmetic and personal care composition, such as a hair styling composition, comprising the polysiloxane block copolymer as described above.
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申请公布号 |
US6365672(B1) |
申请公布日期 |
2002.04.02 |
申请号 |
US20000575966 |
申请日期 |
2000.05.23 |
申请人 |
UNILEVER HOME & PERSONAL CARE USA, DIVISION OF CONOPCO, INC. |
发明人 |
ADAMS GERALD;KHOSHDEL EZAT;MORETTA ANTHONY;PLANT YVONNE CHRISTINE;REID EUAN STUART |
分类号 |
A61K8/72;A61K8/00;A61K8/89;A61K8/896;A61K8/898;A61K8/90;A61Q5/00;A61Q5/02;A61Q5/06;A61Q5/12;C08G77/442;(IPC1-7):C08L83/10;A61K7/06 |
主分类号 |
A61K8/72 |
代理机构 |
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代理人 |
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