公开(公告)号：JPS5992911A

公开(公告)日：1984-05-29

申请号：JP20335382

申请日：1982-11-19

Applicant: KAO CORP

Inventor： HAISHI TOMOYUKI ,  TAKEDA TSUNESHI ,  WAKASA MASANOBU ,  SASA YOSHIMASA ,  FUJITA TADAAKI ,  MAEDA TOSHIJI

IPC: C11D3/12 ,  C01B39/16

Abstract: PURPOSE:To prepare a crystalline aluminosilicate having excellent fluidity, etc., and suitable as a builder of detergent, etc., by mixing a concentrated aqueous solution of sodium aluminate with an aqueous solution of sodium silicate at a specific ratio, and subjecting the mixture to hydrothermal crystallization. CONSTITUTION:A concentrated aqueous solution of sodium aluminate having a concentration of 30-70wt% is mixed with a concentrated aqueous solution of sodium silicate having a concentration of 35-50wt% to obtain a mixed solution having a composition of SiO2/Al2O3>=2, Na2O/Al2O3>2, (SiO2+Na2O)/Al2O3

公开(公告)号：JPS5926918A

公开(公告)日：1984-02-13

申请号：JP13709782

申请日：1982-08-06

Applicant: Kao Corp

Inventor： SASA YOSHIMASA ,  FUJITA TADAAKI ,  HAISHI TOMOYUKI ,  MAEDA TOSHIJI

IPC: C11D3/12 ,  C01B39/14

Abstract: PURPOSE: To prepare a fine crystalline aluminosilicate having excellent characteristics, by mixing a water-soluble silicate with a water-soluble aluminate in the presence of a specific acrylic acid oligomer, and crystallizing the resultant gel by hydrothermal treatment.
CONSTITUTION: An aqueous solution of a water-soluble silicate such as sodium silicate having a concentration of 35W50wt% is mixed with an aqueous solution of a water-soluble aluminate such as sodium aluminate having a concentration of 35W70wt% at a ratio to obtain molar ratios (Na
2 O:Al
2 O
3 :SiO
2 :H
2 O) of (1.5W 2.0):1:(2.0W2.5):(15W30). In the above process, an acrylic acid oligomer having a molecular weight of 300W1,000 is added to the system and made to react at 60W 80°C to cause gelation. The amount of the oligomer is ≥0.2wt% based on the produced aluminosilicate. After the completion of gelation, the system is heated at 95W110°C to effect the hydrothermal crystallization and obtain the suspension of crystalline aluminosilicate. A crystalline aluminosilicate having fine particle size and excellent characteristics as the builder for detergent can be prepared from the suspension.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：通过在特定丙烯酸低聚物的存在下将水溶性硅酸盐与水溶性铝酸盐混合，通过水热处理使所得凝胶结晶，制备具有优异特性的细晶态硅铝酸盐。 构成：将浓度为35-50重量％的水溶性硅酸盐如硅酸钠的水溶液与浓度为35-70重量％的水溶性铝酸盐如铝酸钠的水溶液以比例 得到（1.5-2.0）：1：（2.0-2.5）：（15-30）的摩尔比（Na 2 O：Al 2 O 3 :SiO 2 :H 2 O）。 在上述方法中，将分子量为300-1,000的丙烯酸低聚物加入到体系中并使其在60-80℃下反应以引起凝胶化。 基于所生产的铝硅酸盐，低聚物的量为> = 0.2重量％。 凝胶化完成后，将体系在95-110℃加热，进行水热结晶，得到结晶硅铝酸盐悬浮液。 可以从悬浮液制备具有细小粒度和作为洗涤剂助洗剂的优异特性的结晶硅铝酸盐。