GB696105A - Improvements in the manufacture of polyacetaldehydes - Google Patents

Improvements in the manufacture of polyacetaldehydes

Info

Publication number
GB696105A
GB696105A GB13166/51A GB1316651A GB696105A GB 696105 A GB696105 A GB 696105A GB 13166/51 A GB13166/51 A GB 13166/51A GB 1316651 A GB1316651 A GB 1316651A GB 696105 A GB696105 A GB 696105A
Authority
GB
United Kingdom
Prior art keywords
acetaldehyde
oxygen
freezing
rate
molecular weight
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
GB13166/51A
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.)
FR DUCO SOC
Original Assignee
FR DUCO SOC
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 FR DUCO SOC filed Critical FR DUCO SOC
Publication of GB696105A publication Critical patent/GB696105A/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
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • C08G2/12—Polymerisation of acetaldehyde or cyclic oligomers thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyethers (AREA)

Abstract

Acetaldehyde is polymerized in the presence of a peroxide catalyst produced by the reaction of oxygen on acetaldehyde, by freezing the monomer at a rate corresponding to the optimum yield of polymer of the desired molecular weight, the rate being determined from the graph of the yields as a function of the freezing rate. The peroxide catalyst, which may be paracetic acid, is preferably formed in situ by oxidation of the acetaldehyde by distillation in oxygen, by ultra-violet ray irradiation of the acetaldehyde in the presence of oxygen, or by a combination of these means. When freezing is complete the mass may be macerated under water to dissolve unpolymerized acetaldehyde. The polyacetaldehyde produced has a molecular weight, varying inversely as the square root of the catalyst concentration, of between 800,000 and 3,000,000, and may be stabilized by the addition of antioxidants such as hydroquinone and alpha and beta naphthylamines. The products may be used in paints and varnishes, as adhesives, and as solid fuels.
GB13166/51A 1950-06-17 1951-06-04 Improvements in the manufacture of polyacetaldehydes Expired GB696105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR933785X 1950-06-17

Publications (1)

Publication Number Publication Date
GB696105A true GB696105A (en) 1953-08-26

Family

ID=9455744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13166/51A Expired GB696105A (en) 1950-06-17 1951-06-04 Improvements in the manufacture of polyacetaldehydes

Country Status (4)

Country Link
DE (1) DE933785C (en)
FR (1) FR1020456A (en)
GB (1) GB696105A (en)
NL (1) NL74960C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902470A (en) * 1956-11-30 1959-09-01 Quaker Chemical Products Corp Phenol modified polyacetals
US3001966A (en) * 1958-08-18 1961-09-26 Du Pont Thermally-stabilized polyacetaldehyde elastomers, process for their preparation and mixtures of same with polycarbonamides
US3184433A (en) * 1959-08-26 1965-05-18 Du Pont Stabilized crystalline polyaldehydes having 2-10 carbon atoms per monomer unit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL241792A (en) * 1958-08-18
BE584606A (en) * 1958-11-24
DE1131401B (en) * 1960-03-01 1962-06-14 Hoechst Ag Process for stabilizing high molecular weight, linear polyacetaldehyde
BE602765A (en) * 1960-04-21

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902470A (en) * 1956-11-30 1959-09-01 Quaker Chemical Products Corp Phenol modified polyacetals
US3001966A (en) * 1958-08-18 1961-09-26 Du Pont Thermally-stabilized polyacetaldehyde elastomers, process for their preparation and mixtures of same with polycarbonamides
US3184433A (en) * 1959-08-26 1965-05-18 Du Pont Stabilized crystalline polyaldehydes having 2-10 carbon atoms per monomer unit

Also Published As

Publication number Publication date
NL74960C (en)
FR1020456A (en) 1953-02-06
DE933785C (en) 1955-10-06

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