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 polymerization of the silicate, iii) allowing sufficient time for the polymerization to proceed to substantial completion and thereby forming a product comprising gelled material, and 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. |
申请公布号 |
ZA200507278(B) |
申请公布日期 |
2006.11.29 |
申请号 |
ZA20050007278 |
申请日期 |
2005.09.09 |
申请人 |
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED |
发明人 |
DONNELLY, SIMON;FORD, PHILIP A.;RYS, LAURENCE J. |
分类号 |
C01B;D21H;D21H17/67;D21H17/68;D21H17/69;D21H21/10;D21H23/76 |
主分类号 |
C01B |
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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