发明名称 |
PHENOLIC RESIN COMPOSITIONS |
摘要 |
A cured phenolic resin may be prepared by reacting (1) an esterified phenolic compound containing one or more phenolic hydroxyl groups and/or one or more esterified phenolic hydroxyl groups and further containing one or more esterified methylol groups positioned ortho and/or para to a phenolic hydroxyl group or esterified phenolic hydroxyl group with (2) a phenolic novolak resin in the presence of a base and water or other polar solvent. The invention is particularly useful for the production of foundry moulds or cores wherein the above composition is used as a binder for a granular refractory material such as sand. |
申请公布号 |
AU4709389(A) |
申请公布日期 |
1990.07.26 |
申请号 |
AU19890047093 |
申请日期 |
1989.12.21 |
申请人 |
BORDEN, INC. |
发明人 |
NAME NOT GIVEN |
分类号 |
C08G8/10;B22C1/22;B22C9/12;C04B26/12;C08G8/00;C08G8/20;C08G8/24;C08G8/28;C08G8/32;C08K5/10;C08L61/06 |
主分类号 |
C08G8/10 |
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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