RO99386B1 - Process for obtaining vinyl polychloride plastifiers - Google Patents

Process for obtaining vinyl polychloride plastifiers

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Publication number
RO99386B1
RO99386B1 RO135026A RO13502688A RO99386B1 RO 99386 B1 RO99386 B1 RO 99386B1 RO 135026 A RO135026 A RO 135026A RO 13502688 A RO13502688 A RO 13502688A RO 99386 B1 RO99386 B1 RO 99386B1
Authority
RO
Romania
Prior art keywords
acid
bis
excess
plastifiers
alcohol
Prior art date
Application number
RO135026A
Other languages
Romanian (ro)
Inventor
Liviu-Eduard Mirci
Original Assignee
Institutul Politehnic
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 Institutul Politehnic filed Critical Institutul Politehnic
Priority to RO135026A priority Critical patent/RO99386B1/en
Publication of RO99386B1 publication Critical patent/RO99386B1/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Inventia se refera la un procedeu de obtinere a unor plastifianti pentru policlorura de vinil prin esterificarea acidului 2,2'-[1,4-fenilen-bis-(oxil)]-bis-acetic, cu alcooli alifatici superiori, care lucreaza în sistem azeotrop, folosind un exces de 20...50% alcool alifatic normal C4...C8, C10 respectiv rest izoalifatic C4...C6 si C2...C6 (2-etilhexil); un catalizator acid ales dintre acid benzensulfonic, p-toluensulfonic, acid sulfuric, 1...3% fata de reactanti, an antrenant ales dintre benzen, toluen sau xilen în cantitate echivalenta pâna la dubla fata de cantitatea de diacid în lucru, prin fierbere în reflux timp de 1,5...3 h, dupa care se purifica prin filtrarea suspensiei solide, îndepartarea cu vacuum a agentului de antrenare si a excesului de alcool, spalari alcaline si cu apa demineralizata, devolatilizare si decolorare.The invention relates to a process for the production of vinyl polychlorinated plasticizers by esterification of 2,2 '- [1,4-phenylene-bis- (oxy)] - bis-acetic acid with higher aliphatic alcohols azeotrope, using an excess of 20 ... 50% of C4-8, C10 normal aliphatic alcohol, respectively C4-8 C6-C6 and C2-C6-C2- (2-ethylhexyl) isoaliphatic residue; an acid catalyst selected from benzenesulfonic acid, p-toluenesulfonic acid, sulfuric acid, 1-3% of reactants, an exciting year chosen from benzene, toluene or xylene in an amount equivalent to twice the amount of di-acid at boiling in reflux for 1.5-3 hours, after which it is purified by filtration of the solid suspension, vacuum removal of the entrainment agent and excess of alcohol, alkaline washings and demineralized water, devolatilization and discoloration.

RO135026A 1988-09-03 1988-09-03 Process for obtaining vinyl polychloride plastifiers RO99386B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO135026A RO99386B1 (en) 1988-09-03 1988-09-03 Process for obtaining vinyl polychloride plastifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO135026A RO99386B1 (en) 1988-09-03 1988-09-03 Process for obtaining vinyl polychloride plastifiers

Publications (1)

Publication Number Publication Date
RO99386B1 true RO99386B1 (en) 1990-08-30

Family

ID=40907460

Family Applications (1)

Application Number Title Priority Date Filing Date
RO135026A RO99386B1 (en) 1988-09-03 1988-09-03 Process for obtaining vinyl polychloride plastifiers

Country Status (1)

Country Link
RO (1) RO99386B1 (en)

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