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公开(公告)号：ZA7405152B
公开(公告)日：1975-08-27
申请号：ZA7405152
申请日：1974-08-12
Applicant: DYNAMIT NOBEL AG
IPC: C01B33/32 , C08G77/02 , C09D1/02 , C09D183/02 , C01B
CPC classification number: C09D1/02 , C01B33/32 , C08G77/02 , C08K3/08 , C09D183/02 , C08L2666/54 , C08L83/02
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公开(公告)号：SE7407623A
公开(公告)日：1975-02-26
申请号：SE7407623
申请日：1974-06-10
Applicant: DYNAMIT NOBEL AG
IPC: C01B33/32 , C08G77/02 , C09D1/02 , C09D183/02
CPC classification number: C09D1/02 , C01B33/32 , C08G77/02 , C08K3/08 , C09D183/02 , C08L2666/54 , C08L83/02
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公开(公告)号：NO764323L
公开(公告)日：1977-06-23
申请号：NO764323
申请日：1976-12-21
Applicant: DYNAMIT NOBEL AG
Inventor： LENZ A , KREUZBURG G , HAASE R
Abstract: Method of preparing granular quartz glass which comprises heating a porous granulated silica gel having an alkoxy group content equal to or less than 1 weight percent and a total impurity content of less than 1 part per million, the porous granulated silica gel obtained by hydrolysis of an orthosilicic acid ester of an aliphatic alcohol at a temperature up to 1400 DEG C.
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公开(公告)号：SE7407622L
公开(公告)日：1975-02-26
申请号：SE7407622
申请日：1974-06-10
Applicant: DYNAMIT NOBEL AG
IPC: C07C29/70 , C07C31/28 , C07F9/00 , C08F210/00
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公开(公告)号：YU227574A
公开(公告)日：1982-05-31
申请号：YU227574
申请日：1974-08-20
Applicant: DYNAMIT NOBEL AG
IPC: C01B33/32 , C08G77/02 , C09D1/02 , C09D183/02
Abstract: A process for the preparation of an aqueous alkali metal polysilicate solution having an SiO2 : alkali metal oxide mole ratio of 2.5 - 5.5 : 1 and a silica content of 16 - 23% by weight which comprises contacting a tetraalkoxysilane of the formula Si(OR)4 wherein each R is independently a straight or branched-chain alkyl group of 1 to 3 carbon atoms with an aqueous alkali metal hydroxide solution at a temperature between room temperature and the boiling point of the reaction mixture and at a temperature up to 100 DEG C. distilling over alcohol formed by the reaction of the silane with the alkali metal hydroxide.
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Patent Agency Ranking
公开(公告)号：IT1019096B
公开(公告)日：1977-11-10
申请号：IT5272174
申请日：1974-08-23
Applicant: DYNAMIT NOBEL AG
IPC: C07C29/70 , C07C31/28 , C07F9/00 , C08F210/00 , C07C
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公开(公告)号：IT1019095B
公开(公告)日：1977-11-10
申请号：IT5272074
申请日：1974-08-23
Applicant: DYNAMIT NOBEL AG
IPC: C01B33/32 , C08G77/02 , C09D1/02 , C09D183/02 , C01B
Abstract: A process for the preparation of an aqueous alkali metal polysilicate solution having an SiO2 : alkali metal oxide mole ratio of 2.5 - 5.5 : 1 and a silica content of 16 - 23% by weight which comprises contacting a tetraalkoxysilane of the formula Si(OR)4 wherein each R is independently a straight or branched-chain alkyl group of 1 to 3 carbon atoms with an aqueous alkali metal hydroxide solution at a temperature between room temperature and the boiling point of the reaction mixture and at a temperature up to 100 DEG C. distilling over alcohol formed by the reaction of the silane with the alkali metal hydroxide.
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公开(公告)号：ZA745152B
公开(公告)日：1975-08-27
申请号：ZA745152
申请日：1974-08-12
Applicant: DYNAMIT NOBEL AG
IPC: C01B33/32 , C08G77/02 , C09D1/02 , C09D183/02 , C01B
Abstract: A process for the preparation of an aqueous alkali metal polysilicate solution having an SiO2 : alkali metal oxide mole ratio of 2.5 - 5.5 : 1 and a silica content of 16 - 23% by weight which comprises contacting a tetraalkoxysilane of the formula Si(OR)4 wherein each R is independently a straight or branched-chain alkyl group of 1 to 3 carbon atoms with an aqueous alkali metal hydroxide solution at a temperature between room temperature and the boiling point of the reaction mixture and at a temperature up to 100 DEG C. distilling over alcohol formed by the reaction of the silane with the alkali metal hydroxide.
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