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经营范围
发明名称
TREATMENT OF COAL EXTRACTS
摘要
Phenolic compositions which may be reacted with aldehyde or aldehyde donors, e.g., formaldehyde or hexamine, to form resinous or resinifiable compositions may be manufactured by reacting a solution or extract of coal with a phenol.
申请公布号
ZA7101552(B)
申请公布日期
1971.12.29
申请号
ZA19710001552
申请日期
1971.03.10
申请人
COAL IND LTD
发明人
ROBINSON J;WISE W
分类号
C07C37/11;C08G8/28
主分类号
C07C37/11
代理机构
代理人
主权项
地址
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