GB848632A - Method of recovering pentaerythritol and alkaline formates - Google Patents

Method of recovering pentaerythritol and alkaline formates

Info

Publication number
GB848632A
GB848632A GB14233/59A GB1423359A GB848632A GB 848632 A GB848632 A GB 848632A GB 14233/59 A GB14233/59 A GB 14233/59A GB 1423359 A GB1423359 A GB 1423359A GB 848632 A GB848632 A GB 848632A
Authority
GB
United Kingdom
Prior art keywords
pentaerythritol
liquor
calcium
sodium
mother liquor
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
GB14233/59A
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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 Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montedison SpA
Publication of GB848632A publication Critical patent/GB848632A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Pentaerythritol and calcium or sodium formate are recovered from the mother liquor, obtained by condensing acetaldehyde and formaldehyde in the presence of sodium or calcium formate, by adding methanol to the mother liquor to precipitate the calcium or sodium formate which is separated and crystallising pentaerythritol from the residual liquor or recycling the residual liquor to a subsequent process for preparing pentaerythritol, the pentaerythritol in the recycled liquor being obtained together with that produced in the subsequent process. The mother liquor is defined as that remaining after separation of most of the pentaerythritol and polypentaerythritols. Preferably the mother liquor is concentrated to eliminate from 50 to 8% of the water present before precipitating the sodium or calcium formate.
GB14233/59A 1958-04-30 1959-04-27 Method of recovering pentaerythritol and alkaline formates Expired GB848632A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT848632X 1958-04-30

Publications (1)

Publication Number Publication Date
GB848632A true GB848632A (en) 1960-09-21

Family

ID=11325402

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14233/59A Expired GB848632A (en) 1958-04-30 1959-04-27 Method of recovering pentaerythritol and alkaline formates

Country Status (1)

Country Link
GB (1) GB848632A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277620A (en) * 1980-02-29 1981-07-07 Virginia Chemicals Inc. Byproduct recovery from a pentaerythritol waste stream
CN100368371C (en) * 2005-09-29 2008-02-13 濮阳市鹏鑫化工有限公司 Method for preparing calcium formate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277620A (en) * 1980-02-29 1981-07-07 Virginia Chemicals Inc. Byproduct recovery from a pentaerythritol waste stream
CN100368371C (en) * 2005-09-29 2008-02-13 濮阳市鹏鑫化工有限公司 Method for preparing calcium formate

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