GB876533A - Improvements in or relating to the production of alkylene oxide polymers - Google Patents

Improvements in or relating to the production of alkylene oxide polymers

Info

Publication number
GB876533A
GB876533A GB1517959A GB1517959A GB876533A GB 876533 A GB876533 A GB 876533A GB 1517959 A GB1517959 A GB 1517959A GB 1517959 A GB1517959 A GB 1517959A GB 876533 A GB876533 A GB 876533A
Authority
GB
United Kingdom
Prior art keywords
oxide
hydrocarbon
formula
titanium
radical
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
GB1517959A
Inventor
Dhafir Yusuf Waddan
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.)
Petrochemicals Ltd
Original Assignee
Petrochemicals Ltd
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 Petrochemicals Ltd filed Critical Petrochemicals Ltd
Priority to GB1517959A priority Critical patent/GB876533A/en
Priority to FR825982A priority patent/FR1255867A/en
Publication of GB876533A publication Critical patent/GB876533A/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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
    • C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
    • C08G65/08—Saturated oxiranes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyethers (AREA)

Abstract

Polymers of monoepoxides are prepared by polymerizing in the presence of a catalyst comprising a compound of the formula: M[R1(R2)a(R3)b(R4)c] or MO[R1(R2)a(R3)b(R4)c] where M is titanium, vanadium or zirconium; R is an alkoxy or aryloxy radical; R2, R3 and R4 are alkoxy, aryloxy or hydrocarbon radicals or halogen atoms; a+b+c=(valency of M)-1 in the first formula and (valency of MO)-1 in the second, and a, b and c are integers or zero. The epoxides are defined as compounds of the formula: <FORM:0876533/IV (a)/1> where R and R1 are each a hydrogen or a hydrocarbon radical, R11 is hydrogen or a hydrocarbon or halohydrocarbon radical, and R or R1 may be joined to R11 to form a cycloalkyl group. Examples are epichlorhydrin, ethylene oxide, propylene oxide, 2,3-butylene oxide, 1,1-dimethyl ethylene oxide, cyclohexene oxide and styrene oxide. The monomers are preferably free of water and aldehydes. Copolymers, e.g. of propylene oxide with ethylene oxide or styrene oxide, are included. Specified catalysts are titanium tetra p n- and iso-butoxide, zirconium tetrabutoxide, titanium dichlorodiethoxide and chlorotriethoxide, vanadium pentabutoxide and dichlorotriethoxide, titanyl diethoxide and vanadyl triethoxide. A solvent may be present, e.g., a hydrocarbon or chlorinated hydrocarbon. Details are given of the ways the polymers may be purified.
GB1517959A 1959-05-04 1959-05-04 Improvements in or relating to the production of alkylene oxide polymers Expired GB876533A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1517959A GB876533A (en) 1959-05-04 1959-05-04 Improvements in or relating to the production of alkylene oxide polymers
FR825982A FR1255867A (en) 1959-05-04 1960-05-02 Improvements in the manufacture of polymers of alkylene oxides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1517959A GB876533A (en) 1959-05-04 1959-05-04 Improvements in or relating to the production of alkylene oxide polymers

Publications (1)

Publication Number Publication Date
GB876533A true GB876533A (en) 1961-09-06

Family

ID=10054409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1517959A Expired GB876533A (en) 1959-05-04 1959-05-04 Improvements in or relating to the production of alkylene oxide polymers

Country Status (1)

Country Link
GB (1) GB876533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9786828B2 (en) 2013-02-22 2017-10-10 Weston Aerospace Limited Method of producing a thermocouple having a tailored thermoelectric response

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9786828B2 (en) 2013-02-22 2017-10-10 Weston Aerospace Limited Method of producing a thermocouple having a tailored thermoelectric response

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