发明名称 |
Melamine resins: process for their manufacture and the compression moulding compositions produced from the melamine resins |
摘要 |
Partially etherified melamine-formaldehyde resins having a melamine: formaldehyde molar ratio of 1:(1.25 to 1) can be prepared by a condensation reaction under neutral or weakly alkaline conditions if the condensation reaction is carried out in the presence of a glycol monoether of the general formula I R (OCH2 CH2)n OH (I) wherein R denotes alkyl having 1 to 4 C atoms and n denotes a number from 1 to 5. The partially etherified melamine-formaldehyde resins are suitable for the production of compression moulding compositions having a high flow and minimal processing shrinkage and after-shrinkage.
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申请公布号 |
US4303561(A) |
申请公布日期 |
1981.12.01 |
申请号 |
US19790042976 |
申请日期 |
1979.05.29 |
申请人 |
CASSELLA AKTIENGESELLSCHAFT |
发明人 |
PIESCH, STEFFEN;WOLF, ALFONS |
分类号 |
C08G12/00;C08G12/26;C08G12/32;C08G12/42;C08K5/05;C08L61/32;(IPC1-7):C08G12/30;C08L1/10 |
主分类号 |
C08G12/00 |
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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