BR0106460A - Micellar polymerization process and copolymers thus prepared - Google Patents

Micellar polymerization process and copolymers thus prepared

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Publication number
BR0106460A
BR0106460A BR0106460-6A BR0106460A BR0106460A BR 0106460 A BR0106460 A BR 0106460A BR 0106460 A BR0106460 A BR 0106460A BR 0106460 A BR0106460 A BR 0106460A
Authority
BR
Brazil
Prior art keywords
polymerization process
copolymers
micellar polymerization
prepared
lipophilic
Prior art date
Application number
BR0106460-6A
Other languages
Portuguese (pt)
Other versions
BR0106460B1 (en
Inventor
Roberto Barcala Haag
Celso Rodrigo De Souza
Sonia Maria De Menezes
Original Assignee
Petroleo Brasileiro Sa
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 Petroleo Brasileiro Sa filed Critical Petroleo Brasileiro Sa
Priority to BR0106460A priority Critical patent/BR0106460B1/en
Publication of BR0106460A publication Critical patent/BR0106460A/en
Publication of BR0106460B1 publication Critical patent/BR0106460B1/en

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  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

"PROCESSO DE POLIMERIZAçãO MICELAR E COPOLìMEROS ASSIM PREPARADOS". é descrito um processo de polimerização micelar heterogênea via radicais livres para a copolimerização de monómeros vinílicos lipofílicos-hidrofílicos com pelo menos 60 mol % de comonómero lipofílico. O sistema reacional compreende os comonómeros, água, tensoativo e agente de transferência de cadeia além do iniciador via radicais livres em meio isento de oxigênio. Os copolímeros preparados são úteis como dispersantes de asfaltenos na indústria do petróleo."Micellar polymerization process and thus prepared copolymers". A heterogeneous free radical micellar polymerization process for the copolymerization of lipophilic-hydrophilic vinyl monomers with at least 60 mol% lipophilic comonomer is described. The reaction system comprises comonomers, water, surfactant and chain transfer agent in addition to the initiator via free radicals in oxygen-free medium. The prepared copolymers are useful as asphaltenes dispersants in the petroleum industry.

BR0106460A 2001-12-28 2001-12-28 micellar polymerization process and hydrophilic / lipophilic vinyl copolymers thus prepared. BR0106460B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR0106460A BR0106460B1 (en) 2001-12-28 2001-12-28 micellar polymerization process and hydrophilic / lipophilic vinyl copolymers thus prepared.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR0106460A BR0106460B1 (en) 2001-12-28 2001-12-28 micellar polymerization process and hydrophilic / lipophilic vinyl copolymers thus prepared.

Publications (2)

Publication Number Publication Date
BR0106460A true BR0106460A (en) 2003-09-02
BR0106460B1 BR0106460B1 (en) 2011-09-06

Family

ID=27761881

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0106460A BR0106460B1 (en) 2001-12-28 2001-12-28 micellar polymerization process and hydrophilic / lipophilic vinyl copolymers thus prepared.

Country Status (1)

Country Link
BR (1) BR0106460B1 (en)

Also Published As

Publication number Publication date
BR0106460B1 (en) 2011-09-06

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 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 28/12/2001, 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 20A 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 2650 DE 19-10-2021 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.