GB934427A - Improvements in or relating to sulphoisophthalic and sulphoterephthalic acids and salts thereof - Google Patents

Improvements in or relating to sulphoisophthalic and sulphoterephthalic acids and salts thereof

Info

Publication number
GB934427A
GB934427A GB3793361A GB3793361A GB934427A GB 934427 A GB934427 A GB 934427A GB 3793361 A GB3793361 A GB 3793361A GB 3793361 A GB3793361 A GB 3793361A GB 934427 A GB934427 A GB 934427A
Authority
GB
United Kingdom
Prior art keywords
acid
sulphoisophthalic
terephthalic acid
isophthalic
sulpho
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB3793361A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemische Werke Witten GmbH
Original Assignee
Chemische Werke Witten GmbH
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 Chemische Werke Witten GmbH filed Critical Chemische Werke Witten GmbH
Publication of GB934427A publication Critical patent/GB934427A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/42—Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/02—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
    • C07C303/04—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof by substitution of hydrogen atoms by sulfo or halosulfonyl groups
    • C07C303/06—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof by substitution of hydrogen atoms by sulfo or halosulfonyl groups by reaction with sulfuric acid or sulfur trioxide
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/32—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of salts of sulfonic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
    • C08G63/688—Polyesters containing atoms other than carbon, hydrogen and oxygen containing sulfur
    • C08G63/6884—Polyesters containing atoms other than carbon, hydrogen and oxygen containing sulfur derived from polycarboxylic acids and polyhydroxy compounds

Abstract

5-Sulphoisophthalic acid or 2-sulpho-terephthalic acid is made by sulphonating isophthalic or terephthalic acid with fuming sulphuric acid at a temperature of from 120-210 DEG C. in the presence of mercury or a halogen-free mercury or silver compound as catalyst. Preferably fuming sulphuric acid, containing 20-30% SO3, is employed in an amount of 200-400% by weight based on the weight of the isophthalic or terephthalic acid. Mercuric sulphate is a preferred catalyst, and the catalyst may be used in an amount of 1-2% by weight based on the isophthalic or terephthalic acid. The crude sulpho acid is precipitated from the sulphonation mixture by diluting with water, the crude acid and any free sulphuric acid are neutralised with the calculated quantity of aqueous sodium hydroxide or carbonate and the sodium salt of 5-sulphoisophthalic and/or 2-sulpho-terephthalic acid is precipitated at a temperature of from 23-33 DEG C., preferably at 24-26 DEG C., and if desired the product is washed with water to remove any sodium sulphate.
GB3793361A 1960-10-22 1961-10-23 Improvements in or relating to sulphoisophthalic and sulphoterephthalic acids and salts thereof Expired GB934427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC22604A DE1127891B (en) 1960-10-22 1960-10-22 Process for the preparation of pure mono- and disodium salts of 5-sulfoisophthalic acid and sulfoterephthalic acid

Publications (1)

Publication Number Publication Date
GB934427A true GB934427A (en) 1963-08-21

Family

ID=7017251

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3793361A Expired GB934427A (en) 1960-10-22 1961-10-23 Improvements in or relating to sulphoisophthalic and sulphoterephthalic acids and salts thereof

Country Status (4)

Country Link
BE (1) BE609424A (en)
CH (1) CH401953A (en)
DE (1) DE1127891B (en)
GB (1) GB934427A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102633693A (en) * 2012-03-22 2012-08-15 潍坊沃尔特化学有限公司 Method for synthesizing dimethyl isophthalate-5-sodium sulfonate
EP2751074A4 (en) * 2011-08-29 2015-08-05 Futurefuel Chemical Co 5-sulfoisophthalic acid salts and process for the preparation thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109180538B (en) * 2018-09-19 2021-04-16 山东第一医科大学(山东省医学科学院) Production method for improving yield of m-phthalic acid-5-sulfonic acid for synthesizing three monomers
CN109020840A (en) * 2018-09-19 2018-12-18 青岛中科荣达新材料有限公司 A kind of production method improving M-phthalic acid -5- sulfonic acid yield

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089375B (en) * 1957-10-21 1960-09-22 Du Pont Process for the preparation of m-sulfoisophthalic acid

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2751074A4 (en) * 2011-08-29 2015-08-05 Futurefuel Chemical Co 5-sulfoisophthalic acid salts and process for the preparation thereof
US9212133B2 (en) 2011-08-29 2015-12-15 Futurefuel Chemical Company 5-sulfoisophthalic acid salts and process for the preparation thereof
CN102633693A (en) * 2012-03-22 2012-08-15 潍坊沃尔特化学有限公司 Method for synthesizing dimethyl isophthalate-5-sodium sulfonate
CN102633693B (en) * 2012-03-22 2013-11-13 潍坊沃尔特化学有限公司 Method for synthesizing dimethyl isophthalate-5-sodium sulfonate

Also Published As

Publication number Publication date
BE609424A (en) 1962-02-15
CH401953A (en) 1965-11-15
DE1127891B (en) 1962-04-19

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