GB840737A - Pentaerythritol diacetals - Google Patents

Pentaerythritol diacetals

Info

Publication number
GB840737A
GB840737A GB36663/56A GB3666356A GB840737A GB 840737 A GB840737 A GB 840737A GB 36663/56 A GB36663/56 A GB 36663/56A GB 3666356 A GB3666356 A GB 3666356A GB 840737 A GB840737 A GB 840737A
Authority
GB
United Kingdom
Prior art keywords
pentaerythritol
reaction
phosphoric acid
aldehyde
diacetals
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
GB36663/56A
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.)
Celanese Corp
Original Assignee
Celanese Corp
Celanese Corp of America
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 Celanese Corp, Celanese Corp of America filed Critical Celanese Corp
Publication of GB840737A publication Critical patent/GB840737A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/30—Compounds having groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

Pentaerythritol diacetals are produced by the reaction between pentaerythritol and an a .b -ethylenically unsaturated aldehyde, the reaction mixture containing an amount of phosphoric acid equivalent approximately to at least 1% by weight of concentrated (85%) phosphoric acid. Preferably at least a stoichiometric amount of the aldehyde is used. The reaction may be carried out at room temperature or above. After the reaction is completed any excess unreacted aldehyde is removed, as by distillation and the phosphoric acid catalyst is neutralized with a suitable alkaline material such as sodium hydroxide or sodium bicarbonate. The reaction mixture is then washed and cooled and the diacetal crystallizes out. In the examples diallylidene pentaerythritol and dimethallylidene pentaerythritol are obtained from acrolein and methacrolein respectively.
GB36663/56A 1955-12-02 1956-11-30 Pentaerythritol diacetals Expired GB840737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US840737XA 1955-12-02 1955-12-02

Publications (1)

Publication Number Publication Date
GB840737A true GB840737A (en) 1960-07-13

Family

ID=22182723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36663/56A Expired GB840737A (en) 1955-12-02 1956-11-30 Pentaerythritol diacetals

Country Status (1)

Country Link
GB (1) GB840737A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019999A1 (en) * 1979-05-02 1980-12-10 Imperial Chemical Industries Plc Acetals and their preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019999A1 (en) * 1979-05-02 1980-12-10 Imperial Chemical Industries Plc Acetals and their preparation
US4459418A (en) * 1979-05-02 1984-07-10 Imperial Chemical Industries Preparation of acetals

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