GB875560A - Improvements in the stabilisation of high molecular weight polyformaldehyde - Google Patents

Improvements in the stabilisation of high molecular weight polyformaldehyde

Info

Publication number
GB875560A
GB875560A GB20645/60A GB2064560A GB875560A GB 875560 A GB875560 A GB 875560A GB 20645/60 A GB20645/60 A GB 20645/60A GB 2064560 A GB2064560 A GB 2064560A GB 875560 A GB875560 A GB 875560A
Authority
GB
United Kingdom
Prior art keywords
isocyanate
polyformaldehyde
molecular weight
high molecular
cresol
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
GB20645/60A
Inventor
Konrad Jost
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB875560A publication Critical patent/GB875560A/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
    • C08G2/30—Chemical modification by after-treatment
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/56—Polyacetals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

High molecular weight polyformaldehyde is stabilized against thermal degradation by reaction with an isocyanate. Specified isocyanates are phenyl isocyanate, hexamethylene diisocyanate, toluylene-2, 4-di-isocyanate, phenylene-1, 4-di-isocyanate, naphthylene-1, 5-isocyanate, dicyclo-hexylmethane 4, 41-di-isocyanate, and triphenyl-methane-4, 41, 411-tri-isocyanate. The polyformaldehyde may be swollen with a hydroxylfree solvent before reaction with the iso-cyanate, e.g. formamide methyl or dimethylformamide, dimethyl-sulphoxide, dimethyl sulphone and butyrolactone. The product may be subsequently heated with a mono- or poly-hydric phenol, e.g. phenol, p-cresol, 2, 6-di-t-butyl-p-cresol, butylated hydroxy-anisol, hydroxytolyl-camphane and di-(p-t-butylphenol)-mono or disulphide amongst others.
GB20645/60A 1959-06-13 1960-06-13 Improvements in the stabilisation of high molecular weight polyformaldehyde Expired GB875560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE875560X 1959-06-13

Publications (1)

Publication Number Publication Date
GB875560A true GB875560A (en) 1961-08-23

Family

ID=6817334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20645/60A Expired GB875560A (en) 1959-06-13 1960-06-13 Improvements in the stabilisation of high molecular weight polyformaldehyde

Country Status (1)

Country Link
GB (1) GB875560A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1569453B1 (en) * 1963-03-25 1970-07-23 Thiokol Chemical Corp Thermoplastic polysulphide molding compounds stabilized against thermal degradation
CN110643006A (en) * 2019-09-24 2020-01-03 开滦能源化工股份有限公司 High-melt-strength copolyformaldehyde and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1569453B1 (en) * 1963-03-25 1970-07-23 Thiokol Chemical Corp Thermoplastic polysulphide molding compounds stabilized against thermal degradation
CN110643006A (en) * 2019-09-24 2020-01-03 开滦能源化工股份有限公司 High-melt-strength copolyformaldehyde and preparation method thereof
CN110643006B (en) * 2019-09-24 2022-07-26 开滦能源化工股份有限公司 High-melt-strength copolyformaldehyde and preparation method thereof

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