发明名称 |
METHOD FOR INJECTION MOULDING MOULDED BODIES CONSISTING OF (METH)ACRYLATE COPOLYMERS |
摘要 |
<p>The invention relates to a process for producing mouldings by injection moulding the steps in the process being a) melting and mixing of a (meth)acrylate copolymer composed of from 85 to 98% by weight of C1-C4-alkyl (meth)acrylates capable of free-radical polymerization and from 15 to 2% by weight of (meth)acrylate monomers having a quaternary ammonium group in the alkyl radical, with from 10 to 25% by weight of a plasticizer, and also from 10 to 50% by weight of a dryers [sic] and/or from 0.1 to 3% by weight of a release agent, and, where appropriate, with other conventional pharmaceutical additives or auxiliaries and/or with an active pharmaceutical ingredient, b) devolatilizing the mixture at temperatures of at least 120° C., thus reducing the content of the low-boiling constituents with a vapour pressure of at least 1.9 bar at 120° C. to not more than 0.5% by weight, and c) injecting the devolatilized mixture at a temperature of from 80 to 160° C. into the mould of an injection moulding system and removing the resultant moulding from the mould.</p> |
申请公布号 |
EP1392485(B1) |
申请公布日期 |
2006.04.19 |
申请号 |
EP20020742964 |
申请日期 |
2002.05.08 |
申请人 |
ROEHM GMBH & CO. KG |
发明人 |
PETEREIT, HANS-ULRICH;BECKERT, THOMAS;ASSMUS, MANFRED;HOESS, WERNER;FUCHS, WOLFGANG;SCHIKOWSKY, HARTMUT |
分类号 |
A61K47/32;B29C45/00;B29B7/84;B29C47/76;B29K33/00;B29K33/04;C08K9/10;C08L33/04 |
主分类号 |
A61K47/32 |
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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