发明名称 |
EMULSION POLYMERISATION METHOD |
摘要 |
The invention relates to a method for the production of silicone in water emulsions by emulsion polymerization. The emulsion contains particles of an organopolysiloxane polymer having an average particle diameter of less than 1 μm. The method comprises: —combining a silanol end-blocked organosiloxane starting polymer, water, and a surfactant; said starting polymer having a viscosity of at least 2 Pa·s preferably at least 2.5 Pa·s preferably at least 3.5 Pa·s preferably at least 4 Pa·s and up to 150 Pa·s; —emulsifying the starting polymer by agitating or shearing the ingredients; —polymerizing the starting polymer to form a longer chain silanol end-blocked organopolysiloxane polymer; wherein at least a portion of said polymerizing step is performed at a temperature of less than or equal to 16° C. preferably less than or equal to 15° C. |
申请公布号 |
EP2680812(A1) |
申请公布日期 |
2014.01.08 |
申请号 |
EP20120706265 |
申请日期 |
2012.03.01 |
申请人 |
DOW CORNING CORPORATION |
发明人 |
CAUVIN, SEVERINE;VAN ROY, BLONDINE;RASSART, BENOIT;PETROSINO, ALBERTO;HANSSENS, SOPHIE |
分类号 |
A61K8/89;C08J3/03;C08L83/04 |
主分类号 |
A61K8/89 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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