Thermosetting bonding agents |
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| 申请号 | US3692721D | 申请日 | 1970-04-23 | 公开(公告)号 | US3692721A | 公开(公告)日 | 1972-09-19 |
| 申请人 | JOSTEN FRIEDRICH; WILHELM LUCKER; HANS ALBRECHT MEYER STOLL; WOLFGANG VON MINDEN; | 发明人 | JOSTEN FRIEDRICH; LUCKER WILHELM; MEYER-STOLL HANS ALBRECHT; MINDEN WOLFGANG VON; | ||||
| 摘要 | THIS INVENTION RELATES TO THERMOSETTING BONDING AGENTS WHICH ARE CONDENSATION PRODUCTS OF PHENOL, UREA, ACETONE, FORMALDEHYDE AND ALKANEDIOL. FURTHER, IT PERTAINS TO THE MANUFACTURE OF SAID AGENTS BY REACTING PHENOL, FORMALDEHYDE, UREA AND ACETONE UNDER ALKALINE CONDITIONS FOLLOWED BY REACTING THE RESULTANT PRODUCT MIXUTRE WITH ALKANEDIOL UNDER ACIDIC CONDITIONS. IT ALSO RELATES TO COMPOSITIONS COMPRISING SAID AGENTS AND SAND USEFULAS FOUNDRY MOLD AND CORES. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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