CA672712A - Purification with ozone - Google Patents

Purification with ozone

Info

Publication number
CA672712A
CA672712A CA672712A CA672712DA CA672712A CA 672712 A CA672712 A CA 672712A CA 672712 A CA672712 A CA 672712A CA 672712D A CA672712D A CA 672712DA CA 672712 A CA672712 A CA 672712A
Authority
CA
Canada
Prior art keywords
ozone
purification
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
CA672712A
Inventor
Francis H. Sawden
Walter V. H. Bowerman
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.)
DuPont Canada Inc
Original Assignee
DuPont Canada Inc
Publication date
Application granted granted Critical
Publication of CA672712A publication Critical patent/CA672712A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/32—Separation; Purification; Stabilisation; Use of additives
    • C07C253/34—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
CA672712A Purification with ozone Expired CA672712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA672712T

Publications (1)

Publication Number Publication Date
CA672712A true CA672712A (en) 1963-10-22

Family

ID=35973069

Family Applications (1)

Application Number Title Priority Date Filing Date
CA672712A Expired CA672712A (en) Purification with ozone

Country Status (1)

Country Link
CA (1) CA672712A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725459A (en) * 1969-08-08 1973-04-03 Ube Industries Process for purifying adiponitrile
US6331651B1 (en) * 2000-09-18 2001-12-18 E. I. Du Pont De Nemours And Company Process for making hexamethylene diamine using ozone-treated adiponitrile that contains phosphorous compounds
WO2008157218A1 (en) * 2007-06-13 2008-12-24 Invista Technologies S.A.R.L. Process for improving adiponitrile quality
WO2017040583A1 (en) 2015-09-03 2017-03-09 Invista North America S.A R.L. Inhibiting cpi formation from adiponitrile
US11028045B2 (en) 2016-05-02 2021-06-08 Inv Nylon Chemicals Americas, Llc Process for reducing CPI in a dinitrile stream
WO2021152564A1 (en) 2020-01-31 2021-08-05 Invista Textiles (U.K.) Limited Impurity formation reduction during product refining

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725459A (en) * 1969-08-08 1973-04-03 Ube Industries Process for purifying adiponitrile
US6331651B1 (en) * 2000-09-18 2001-12-18 E. I. Du Pont De Nemours And Company Process for making hexamethylene diamine using ozone-treated adiponitrile that contains phosphorous compounds
WO2008157218A1 (en) * 2007-06-13 2008-12-24 Invista Technologies S.A.R.L. Process for improving adiponitrile quality
US8101790B2 (en) 2007-06-13 2012-01-24 Invista North America S.A.R.L. Process for improving adiponitrile quality
WO2017040583A1 (en) 2015-09-03 2017-03-09 Invista North America S.A R.L. Inhibiting cpi formation from adiponitrile
US10640459B2 (en) 2015-09-03 2020-05-05 Invista North America S.A.R.L. Inhibiting CPI formation from adiponitrile
US11028045B2 (en) 2016-05-02 2021-06-08 Inv Nylon Chemicals Americas, Llc Process for reducing CPI in a dinitrile stream
WO2021152564A1 (en) 2020-01-31 2021-08-05 Invista Textiles (U.K.) Limited Impurity formation reduction during product refining

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