发明名称 |
FREMGANGSMAATE FOR FREMSTILLING AV FORMDELER AV SEMENT VED BLANDING AV SEMENT MED FORMALDEHYDHARPIKS OG TRE I FINFORDELT FORM |
摘要 |
<p>1438745 Cement-resin compositions DEUTSCHE TEXACO AG 22 Oct 1974 [25 Oct 1973 (2)] 45708/74 Heading C1H [Also in Division C3] Moulded shapes are produced by mixing cement into a paste with an aqueous or alcoholic solution of an acetone-formaldehyde resin and curing the paste in a mould at at least 30‹ C. The resin can be produced by condensing acetone and formaldehyde under alkaline conditions at 20-100‹ C. in a ratio between 1 : 1À5 and 1 : 5. 10-100 parts (based on the weight of the resin solids) of a 30-60 wt. per cent solution of the resin can be used per 100 parts of cement. The mix can also comprise sand, gravel and 20- 200 parts of wood chips per 100 parts of cement and can be cured at 30-200‹ C. and up to 180 atmospheres. The mixes used in the examples can comprise sand, wood chips or urea-formaldehyde resin solution in addition to Portland cement and acetone-formaldehyde resin dissolved in water, isopropanol or methanol.</p> |
申请公布号 |
NO138801(B) |
申请公布日期 |
1978.08.07 |
申请号 |
NO19740003437 |
申请日期 |
1974.09.24 |
申请人 |
DEUTSCHE TEXACO AKTIENGESELLSCHAFT, |
发明人 |
JOSTEN, FRIEDRICH,;CHERUBIM, MARTIN,;BERNDT, HEINZ, |
分类号 |
C04B24/30;C04B28/02;C04B40/02;(IPC1-7):04B7/35 |
主分类号 |
C04B24/30 |
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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