GB914771A - Stabilised polyethers and heterocyclic ethers - Google Patents

Stabilised polyethers and heterocyclic ethers

Info

Publication number
GB914771A
GB914771A GB18860A GB18860A GB914771A GB 914771 A GB914771 A GB 914771A GB 18860 A GB18860 A GB 18860A GB 18860 A GB18860 A GB 18860A GB 914771 A GB914771 A GB 914771A
Authority
GB
United Kingdom
Prior art keywords
polyethers
ethers
bis
glycols
general formula
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
GB18860A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB914771A publication Critical patent/GB914771A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01—Preparation of ethers
    • C07C41/34—Separation; Purification; Stabilisation; Use of additives
    • C07C41/46—Use of additives, e.g. for stabilisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/06—Sulfur

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyethers (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Abstract

Polyethers free from ethylenic unsaturation are stabilized against oxidative degradation by having dissolved therein an amount of elemental sulphur, suitably 0,5% by weight of the ether. Specified polyethers include those of the general formula HO(GO)nH where n is greater than 2, RO(GO)nH, where n is greater than 2 and RO(GO)nR1 where n is greater than 1, and G is an alkylene radical and R and R1 represent alkyl, alkaryl or aryl radicals, numerous such ethers being specified. Polyalkylene arylene glycols are also mentioned. Examples describe the stabilization of polyethylene glycol (M.W. 1000), polypropylene glycol (M.W. 2025) and polytetramethylene glycol (M.W. 1000).ALSO:Liquid, liquefied and solid organic polyethers and heterocyclic ethers, free from ethylenic unsaturation, are rendered resistant to oxidative degradation by having dissolved therein an amount of elemental sulphur, preferably 0.5% by weight of the ether. Specified polyethers include 1,1,1-tri(2-hydroxy ethoxy methyl)ethane, 5,6-bis(2-hydroxyethoxy)-3,8-dioxa-1, 10-decanediol, 2,21-[thio bis(ethyleneoxy)]diethanol, 1,11 - [thio bis(ethyleneoxy butylene)]bis(1,2 - ethanediol), polyalkylene glycols of the general formula HO(GO)nH wherein G is an alkylene group and n is an integer greater than 2 such as polyethylene, polytrimethylene, polydecamethylene and polydimethylethylene glycols, polyalkylene arylene glycols, and polyethers of the general formula RO(GO)nH wherein G and n are as above defined, and R is alkyl, alkaryl or aryl or of the general formula RO(GO)nR1 wherein G is as above, n is 1 or more and R and R1 are alkyl, alkaryl or aryl. Specified heterocyclic ethers include ethylene and propylene oxides, 1,2-epoxyhexadecane, oxetane, various mono- and di-alkyl oxetanes, 3-phenyl oxetane, 3,3-bis(ethoxymethyl)oxetane, 2-oxaspiro[3,5] nonane, 2-oxaspiro[3,4]octane, dioxane, 1,2-oxacycloheptane and tetrahydrofuran and tetrahydropyran and various of their alkylsubstituted derivatives. Millable solid ethers may be mixed with the sulphur on a roll mill; low melting ethers are preferably melted in an inert atmosphere and the sulphur added thereto. An inert solvent may be present. Examples are given of the stabilization of tetrahydrofuran and various polyalkylene glycols.
GB18860A 1959-01-14 1960-01-04 Stabilised polyethers and heterocyclic ethers Expired GB914771A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78669759A 1959-01-14 1959-01-14

Publications (1)

Publication Number Publication Date
GB914771A true GB914771A (en) 1963-01-02

Family

ID=25139348

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18860A Expired GB914771A (en) 1959-01-14 1960-01-04 Stabilised polyethers and heterocyclic ethers

Country Status (1)

Country Link
GB (1) GB914771A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256890B (en) * 1964-04-29 1967-12-21 Gen Tire & Rubber Co Molding compositions containing polyoxylkylenes and sulfur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256890B (en) * 1964-04-29 1967-12-21 Gen Tire & Rubber Co Molding compositions containing polyoxylkylenes and sulfur

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