BR9714987A - Method for the continuous preparation of a polyaluminosilicate microgel and apparatus for the continuous production of a stable aqueous polyaluminosilicate microgel - Google Patents
Method for the continuous preparation of a polyaluminosilicate microgel and apparatus for the continuous production of a stable aqueous polyaluminosilicate microgelInfo
- Publication number
- BR9714987A BR9714987A BR9714987-0A BR9714987A BR9714987A BR 9714987 A BR9714987 A BR 9714987A BR 9714987 A BR9714987 A BR 9714987A BR 9714987 A BR9714987 A BR 9714987A
- Authority
- BR
- Brazil
- Prior art keywords
- polyaluminosilicate microgel
- preparation
- continuous
- stable aqueous
- polyaluminosilicate
- Prior art date
Links
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
<B>"MéTODO PARA A PREPARAçãO CONTìNUA DE UM MICROGEL DE POLIALUMINOSSILICATO E APARELHO PARA A PRODUçãO CONTìNUA DE UM MICROGEL DE POLIALUMINOSSILICATO AQUOSO ESTáVEL"<D> A presente invenção refere-se a um método aperfeiçoado e aparelho para a preparação de microgéis de polialuminossilicato de baixa concentração a partir de um silicato solúvel em água e um ácido forte, onde o silicato e o ácido são misturados a uma taxa que produza um número Reynolds de pelo menos 4000, a mistura é envelhecida e então diluída a uma concentração de sílica de não mais de 1,0% em peso. O método consegue deposição reduzida de sílica durante a preparação dos microgéis.<B> "METHOD FOR THE CONTINUOUS PREPARATION OF A POLYALUMINOSILICATE MICROGEL AND APPARATUS FOR THE CONTINUOUS PRODUCTION OF A STABLE AQUEOUS POLYALUMINOSILICATE MICROGEL" <D> The present invention relates to an improved method and apparatus for the preparation of polyuminous microgels. low concentration from a water-soluble silicate and a strong acid, where the silicate and the acid are mixed at a rate that produces a Reynolds number of at least 4000, the mixture is aged and then diluted to a silica concentration of not more than 1.0% by weight. The method achieves reduced silica deposition during the preparation of the microgels.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9714987-0A BR9714987A (en) | 1997-06-04 | 1997-06-04 | Method for the continuous preparation of a polyaluminosilicate microgel and apparatus for the continuous production of a stable aqueous polyaluminosilicate microgel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9714987-0A BR9714987A (en) | 1997-06-04 | 1997-06-04 | Method for the continuous preparation of a polyaluminosilicate microgel and apparatus for the continuous production of a stable aqueous polyaluminosilicate microgel |
PCT/US1997/009674 WO1998055398A1 (en) | 1995-10-25 | 1997-06-04 | Improved method for preparing low-concentration polyaluminosilicate microgels |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9714987A true BR9714987A (en) | 2001-01-16 |
Family
ID=25665065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9714987-0A BR9714987A (en) | 1997-06-04 | 1997-06-04 | Method for the continuous preparation of a polyaluminosilicate microgel and apparatus for the continuous production of a stable aqueous polyaluminosilicate microgel |
Country Status (1)
Country | Link |
---|---|
BR (1) | BR9714987A (en) |
-
1997
- 1997-06-04 BR BR9714987-0A patent/BR9714987A/en not_active IP Right Cessation
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Legal Events
Date | Code | Title | Description |
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B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B09Y | Publication of grant cancelled [chapter 9.1.2 patent gazette] | ||
B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 04/06/1997, OBSERVADAS AS CONDICOES LEGAIS. |
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B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE A 17A ANUIDADE. |
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B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |
Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2257 DE 08-04-2014 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |