发明名称 |
AQUEOUS COMPOSITIONS AND THEIR USE IN THE MANUFACTURE OF PAPER AND PAPERBOARD |
摘要 |
A process of preparing an aqueous composition comprising a polysilicate, wherein the composition is a substantially uniform liquid when measured at 25~C, comprising the steps of, i) providing an aqueous liquid having a source of silicate, ii) adjusting the pH of the liquid to between about 2 and about 10.5, thereby causing polymerisation of the silicate, iii) allowing sufficient time for the polymerisation to proceed to substantial completion and thereby forming a product comprising gelled material, iv) subjecting the gelled material to sufficient shear to form a substantially uniform liquid. The novel aqueous composition made by this process is useful in the manufacture of paper and paperboard either as a mineral filler or as a retention/drainage aid.
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申请公布号 |
CA2521111(C) |
申请公布日期 |
2012.05.15 |
申请号 |
CA20042521111 |
申请日期 |
2004.03.18 |
申请人 |
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED |
发明人 |
DONNELLY, SIMON;FORD, PHILIP A.;RYS, LAURENCE J. |
分类号 |
C01B33/20;C01B33/26;D21H17/66;D21H17/68;D21H21/10;D21H23/04 |
主分类号 |
C01B33/20 |
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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