发明名称 |
PROCEDIMENTO PER PRODURRE POLI-IDROSSICOMPOSTI DI BASSO PESO MOLE COLARE |
摘要 |
Low molecular weight polyhydroxyl compounds are made from formaldehyde hydrate by an improved process comprising adjusting the pH of an aqueous solution of formaldehyde and co-catalyst to 9-12 with calcium hydroxide at 80 DEG -110 DEG C. to begin condensation and then adding to this reaction mixture aqueous formalin and/or paraformaldehyde and calcium hydroxide to maintain a pH of 7.5-9.5 and temperature of 80 DEG -110 DEG C. |
申请公布号 |
IT1106276(B) |
申请公布日期 |
1985.11.11 |
申请号 |
IT19780050837 |
申请日期 |
1978.08.24 |
申请人 |
BAYER AG |
发明人 |
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分类号 |
C07C29/38;B01J23/00;B01J31/00;C07C27/00;C07C29/14;C07C29/141;C07C29/143;C07C29/145;C07C31/18;C07C45/00;C07C45/71;C07C45/72;C07C45/75;C07C47/19;C07C67/00;C07H3/02;C07H3/04;C08G4/00;C08G6/00;C08G18/00;C08G18/32;C08G18/42;C08G18/48;C08G18/54;(IPC1-7):C07C/ |
主分类号 |
C07C29/38 |
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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