ES290130A1 - Procedure to esterify in polioximethylene solution (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure to esterify in polioximethylene solution (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES290130A1
ES290130A1 ES290130A ES290130A ES290130A1 ES 290130 A1 ES290130 A1 ES 290130A1 ES 290130 A ES290130 A ES 290130A ES 290130 A ES290130 A ES 290130A ES 290130 A1 ES290130 A1 ES 290130A1
Authority
ES
Spain
Prior art keywords
temperature
solution
translation
machine
legally binding
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
ES290130A
Other languages
Spanish (es)
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
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 Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
Publication of ES290130A1 publication Critical patent/ES290130A1/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
    • C08G2/32—Chemical modification by after-treatment by esterification

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)

Abstract

Process for esterifying in polyoxymethylene solution, with a crystallinity higher than 90%, determined by X-ray examination, which is characterized in that the polyoxymethylene is dissolved at a temperature higher than 170º C, preferably between 175 and 210º C, in the liquid medium containing the esterifying agent, with a solid to liquid ratio comprised between 1: 0.5 and 1:10; the esterification is carried out at a temperature above the crystallization temperature of the polymer, preferably between 135º and 210º C; and the hot solution from the acetylation step is subjected to crystallization of the polymer at a temperature comprised between 100º C and 135º C, cooling being carried out from the esterification temperature to the crystallization temperature by mixing the hot polymer solution with a fluid at a temperature between 0º and 130ºC. (Machine-translation by Google Translate, not legally binding)
ES290130A 1962-07-27 1963-07-19 Procedure to esterify in polioximethylene solution (Machine-translation by Google Translate, not legally binding) Expired ES290130A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1519262 1962-07-27

Publications (1)

Publication Number Publication Date
ES290130A1 true ES290130A1 (en) 1964-03-01

Family

ID=11147157

Family Applications (1)

Application Number Title Priority Date Filing Date
ES290130A Expired ES290130A1 (en) 1962-07-27 1963-07-19 Procedure to esterify in polioximethylene solution (Machine-translation by Google Translate, not legally binding)

Country Status (8)

Country Link
AT (1) AT251280B (en)
BE (1) BE635477A (en)
CH (1) CH427285A (en)
DE (1) DE1520320B2 (en)
ES (1) ES290130A1 (en)
GB (1) GB985616A (en)
NL (2) NL133340C (en)
SE (1) SE300518B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173921B1 (en) * 1971-12-27 1975-11-07 Sir Soc Italiana Resine Spa
SG11201504408QA (en) * 2012-12-21 2015-07-30 Bayer Materialscience Ag Functionalized polyoxymethylene block copolymers

Also Published As

Publication number Publication date
NL295524A (en)
GB985616A (en) 1965-03-10
NL133340C (en)
DE1520320B2 (en) 1971-10-14
SE300518B (en) 1968-04-29
CH427285A (en) 1966-12-31
BE635477A (en)
DE1520320A1 (en) 1969-04-10
AT251280B (en) 1966-12-27

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