发明名称 |
VERFAHREN ZUR EMULSIONSHERSTELLUNG VON UNLOESLICHEN POLYMEREN UND COPOLYMEREN IN IHREN MONOMER- UND COMONOMERZUSAMMENSETZUNGEN. |
摘要 |
Polymerisation in suspended emulsion of the corresponding monomer(s). …<??>An aqueous solution of at least a part of an initiating system is dispersed, in finely divided form, in a monomeric or comonomeric composition of vinyl type and the polymerisation of the said composition is carried out. The quantity of water in the said aqueous solution represents at least 19 % and preferably at least 20 % by weight relative to the said monomeric or comonomeric composition. …<??>In the case of the polymerisation of a monomeric or comonomeric composition based on vinyl chloride the said process makes it possible to obtain, with a degree of conversion of the monomeric or comonomeric composition which is higher than 50 % and which may exceed 65 %, polymers and copolymers made up of particles with a mean diameter greater than 10 mu m exhibiting both an apparent density which can exceed 0.55 g/cm<3> and a porosity, evaluated by a plasticiser uptake value at room temperature, which can exceed 30 g of di(2-ethylhexyl) phthalate per 100 g of resin. |
申请公布号 |
DE3870968(D1) |
申请公布日期 |
1992.06.17 |
申请号 |
DE19883870968 |
申请日期 |
1988.03.14 |
申请人 |
ELF ATOCHEM S.A., PUTEAUX, FR |
发明人 |
NOGUES, PIERRE;ERARD, FRANCOIS, F-27300 BERNAY, FR |
分类号 |
C08F2/18;C08F2/02;C08F2/22;C08F2/32;(IPC1-7):C08F2/22 |
主分类号 |
C08F2/18 |
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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