GB778239A - Trihydroxy polyoxyalkylene ethers of glycerol - Google Patents

Trihydroxy polyoxyalkylene ethers of glycerol

Info

Publication number
GB778239A
GB778239A GB32718/54A GB3271854A GB778239A GB 778239 A GB778239 A GB 778239A GB 32718/54 A GB32718/54 A GB 32718/54A GB 3271854 A GB3271854 A GB 3271854A GB 778239 A GB778239 A GB 778239A
Authority
GB
United Kingdom
Prior art keywords
products
glycerol
mol
properties
aqueous
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
GB32718/54A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB778239A publication Critical patent/GB778239A/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
    • C08G65/26—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 and other compounds
    • C08G65/2603—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 and other compounds the other compounds containing oxygen
    • C08G65/2606—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 and other compounds the other compounds containing oxygen containing hydroxyl groups
    • C08G65/2609—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 and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
    • 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
    • C07C41/02—Preparation of ethers from oxiranes
    • C07C41/03—Preparation of ethers from oxiranes by reaction of oxirane rings with hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/02—Ethers
    • C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
    • C07C43/04—Saturated ethers
    • C07C43/10—Saturated ethers of polyhydroxy compounds
    • C07C43/11—Polyethers containing —O—(C—C—O—)n units with ≤ 2 n≤ 10
    • 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
    • C08G65/26—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 and other compounds
    • C08G65/2696—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 and other compounds characterised by the process or apparatus used

Abstract

Glycerol ethers contain three polyoxy-1,2-propylene chains attached to each glycerine molecule and three hydroxypolyoxyethylene chains attached to the polyoxypropylene ones. The average number of oxyalkylene groups per mol. of glycerol is at least 54 and the oxy-1,2-propylene radicals constitute 66-89 mol. per cent of the total oxyalkylene groups. Preparations is carried out in two steps, batchwise or continuously, under substantially moisture-free conditions, with an alkali metal hydroxide or alcoholate as catalyst and preferably in an inert atmosphere, e.g. of nitrogen. Heat may be removed to maintain a temperature of 120-140 DEG C. Alkali in the products may be neutralized, e.g. with acetic acid and the products washed with water and, if desired, freed from volatile products by fractional distillation. The products are non-ionic surface-active agents particularly useful for suppressing and dispersing foam. Examples describe detailed preparations, compare the physical properties of products according to the invention and illustrate the foam-suppressing properties of the products. Reference has been directed by the Comptroller to Specification 731,603.ALSO:Ethers containing an oxy - 1.2 - propylene chain attached to each OH group of glycerol and three hydroxy - polyoxyethylene chains attached to the polyoxypropylene ones, the oxypropylene groups constituting 66-89 mol. per cent of the total oxyalkylene groups (see Group IV(a)) are good anti-foaming agents useful in both aqueous and non-aqueous systems. Example 3 illustrates the anti-foaming properties of the products in aqueous anti-freeze soltions of ethylene glycol and Example 4 compares their anti-foaming properties with those of known anti-foaming agents. Reference has been directed by the Comptroller to Specification 731,603, [Group IV(a)]
GB32718/54A 1953-12-07 1954-11-11 Trihydroxy polyoxyalkylene ethers of glycerol Expired GB778239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US778239XA 1953-12-07 1953-12-07

Publications (1)

Publication Number Publication Date
GB778239A true GB778239A (en) 1957-07-03

Family

ID=22140258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32718/54A Expired GB778239A (en) 1953-12-07 1954-11-11 Trihydroxy polyoxyalkylene ethers of glycerol

Country Status (1)

Country Link
GB (1) GB778239A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240273B (en) * 1961-07-21 1967-05-11 Atlas Chem Ind Process for the production of polyurethane foams
US4767846A (en) * 1981-07-04 1988-08-30 Nippon Paint Company Limited Production of polymeric polyols

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240273B (en) * 1961-07-21 1967-05-11 Atlas Chem Ind Process for the production of polyurethane foams
US4767846A (en) * 1981-07-04 1988-08-30 Nippon Paint Company Limited Production of polymeric polyols

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