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公开(公告)号:DK95578A
公开(公告)日:1978-09-04
申请号:DK95578
申请日:1978-03-02
Applicant: HOECHST AG
Abstract: Hardeners of condensed aluminum phosphates for use in water-glass cementing compositions and process for making them. The hardeners consist substantially of a short chain aluminum polyphosphate with a chain length of 3 to 6 and a long chain aluminum polyphosphate with a chain length or more than 40. Quick-setting hardeners contain a high proportion of the short chain component and slow-setting hardeners contain a high porportion of the long chain component.
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公开(公告)号:DK166077A
公开(公告)日:1977-10-16
申请号:DK166077
申请日:1977-04-14
Applicant: HOECHST AG
IPC: C01B25/445 , C01B
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公开(公告)号:ZA781212B
公开(公告)日:1979-03-28
申请号:ZA781212
申请日:1978-03-02
Applicant: HOECHST AG
Abstract: Hardeners of condensed aluminum phosphates for use in water-glass cementing compositions and process for making them. The hardeners consist substantially of a short chain aluminum polyphosphate with a chain length of 3 to 6 and a long chain aluminum polyphosphate with a chain length or more than 40. Quick-setting hardeners contain a high proportion of the short chain component and slow-setting hardeners contain a high porportion of the long chain component.
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公开(公告)号:BR7801263A
公开(公告)日:1978-11-21
申请号:BR7801263
申请日:1978-03-02
Applicant: HOECHST AG
Abstract: Hardeners of condensed aluminum phosphates for use in water-glass cementing compositions and process for making them. The hardeners consist substantially of a short chain aluminum polyphosphate with a chain length of 3 to 6 and a long chain aluminum polyphosphate with a chain length or more than 40. Quick-setting hardeners contain a high proportion of the short chain component and slow-setting hardeners contain a high porportion of the long chain component.
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公开(公告)号:BR7703075A
公开(公告)日:1978-05-23
申请号:BR7703075
申请日:1977-05-12
Applicant: HOECHST AG
Abstract: Aluminum polyphosphate is made. To this end, solid aluminum hydroxide and polyphosphoric acid which are used in proportions corresponding to an Al:P molar ratio of 1:2.5 to 1:3.5, are introduced separately from, but concurrently with, one another into a reaction zone kept at 150 DEG to 200 DEG C. A moist friable consistency of the starting materials is maintained in the reaction zone by continuously mixing, kneading and comminuting them over substantially the entire period during which they are introduced into the reaction zone. The reaction is continued until a dry sandy powder is formed; and the powder is annealed at 400 DEG to 600 DEG C. over a period sufficient to yield a product undergoing a 0.5 to 1% weight loss on ignition.
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