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 microgel

Info

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
Application number
BR9714987-0A
Other languages
Portuguese (pt)
Inventor
Robert Harvey Moffett
John Derek Rushmere
Original Assignee
Du Pont
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Du Pont filed Critical Du Pont
Priority to BR9714987-0A priority Critical patent/BR9714987A/en
Priority claimed from PCT/US1997/009674 external-priority patent/WO1998055398A1/en
Publication of BR9714987A publication Critical patent/BR9714987A/en

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  • 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.

BR9714987-0A 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 BR9714987A (en)

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)

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Legal Events

Date Code Title Description
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.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 17A ANUIDADE.

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.