DK118658B - Process for the preparation of anhydrous, sulfuric acid-free 4,4'-biphenyldisulfonic acid. - Google Patents

Process for the preparation of anhydrous, sulfuric acid-free 4,4'-biphenyldisulfonic acid.

Info

Publication number
DK118658B
DK118658B DK512268AA DK512268A DK118658B DK 118658 B DK118658 B DK 118658B DK 512268A A DK512268A A DK 512268AA DK 512268 A DK512268 A DK 512268A DK 118658 B DK118658 B DK 118658B
Authority
DK
Denmark
Prior art keywords
acid
anhydrous
preparation
free
biphenyldisulfonic
Prior art date
Application number
DK512268AA
Other languages
Danish (da)
Inventor
C Cumbo
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
Publication of DK118658B publication Critical patent/DK118658B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
DK512268AA 1967-12-01 1968-10-23 Process for the preparation of anhydrous, sulfuric acid-free 4,4'-biphenyldisulfonic acid. DK118658B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68716067A 1967-12-01 1967-12-01

Publications (1)

Publication Number Publication Date
DK118658B true DK118658B (en) 1970-09-21

Family

ID=24759319

Family Applications (1)

Application Number Title Priority Date Filing Date
DK512268AA DK118658B (en) 1967-12-01 1968-10-23 Process for the preparation of anhydrous, sulfuric acid-free 4,4'-biphenyldisulfonic acid.

Country Status (7)

Country Link
BE (1) BE722620A (en)
CH (1) CH501601A (en)
DE (1) DE1804693A1 (en)
DK (1) DK118658B (en)
FR (1) FR1588033A (en)
GB (1) GB1234589A (en)
LU (1) LU57150A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236425B (en) * 1962-05-12 1967-03-09 Gerresheimer Glas Ag Filter ring for socket end pipes
DE1263627B (en) * 1963-07-27 1968-03-14 Dr Rainer Kowald Drainage with filter bodies attached to the joints of the drainage pipe, method for manufacturing the filter bodies attached to the joints and drainage machine for practicing the method
DE1298457B (en) * 1966-06-02 1969-06-26 Baar Heinz Joachim Double socket for clay pipe drainage
GB2105713B (en) * 1981-07-23 1985-06-12 Sugai Chemical Ind Co Ltd Process for producing 4,4'-diphenyldisulfonic acid and its monopotassium salt
DE3402622C2 (en) * 1984-01-26 1986-10-30 Bayer Ag, 5090 Leverkusen Process for the preparation of diphenyl-4,4'-disulfonic acid
US4973650A (en) * 1989-06-09 1990-11-27 General Electric Company Polyarylsulfone derived from 1,4"-(bishalophenylsulfone)terphenyl

Also Published As

Publication number Publication date
CH501601A (en) 1971-01-15
DE1804693A1 (en) 1969-06-12
GB1234589A (en) 1971-06-03
LU57150A1 (en) 1969-01-31
BE722620A (en) 1969-04-01
FR1588033A (en) 1970-04-03

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