GB885516A - Higher fatty acid esters of dextran - Google Patents

Higher fatty acid esters of dextran

Info

Publication number
GB885516A
GB885516A GB151158A GB151158A GB885516A GB 885516 A GB885516 A GB 885516A GB 151158 A GB151158 A GB 151158A GB 151158 A GB151158 A GB 151158A GB 885516 A GB885516 A GB 885516A
Authority
GB
United Kingdom
Prior art keywords
dextran
ester
toluene
temperature
acid acceptor
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
GB151158A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB151158A priority Critical patent/GB885516A/en
Publication of GB885516A publication Critical patent/GB885516A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
    • C08B37/0021—Dextran, i.e. (alpha-1,4)-D-glucan; Derivatives thereof, e.g. Sephadex, i.e. crosslinked dextran

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Molecular Biology (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Birds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Dextran palmitate is made by heating dextran to 100 DEG C. to 155 DEG C. with a palmitic acid halide, preferably the chloride, in the presence of equal parts by weight of an acid acceptor and of a substance capable of dissolving or swelling the ester as it is formed, so as to produce a dextran palmitate containing 2,9 palmitoyl radicals per anhydroglucose unit. The acid acceptor may be an organic base such as quinoline, pyridine or N-methyl morpholine. The substance which dissolves or swells the ester may be xylene, toluene or dioxane. The temperature employed and the reaction time depend on the boiling point of the mixture of acid acceptor and solvent. Using a mixture of pyridine and toluene, a temperature of 100 DEG to 115 DEG C. is used for 1 to 3 hours. With quinoline and xylene, a temperature of 150-155 DEG C. is used for 30 minutes to an hour. The dextran employed may be native dextran produced microbiologically from sucrose, or it may be a dextran hydrolyzate having an average molecular weight of 60,000 to 80,000. A composition of the ester in an organic solvent may be used to form chemical gloves. The esters are soluble in non-polar solvents such as halogenated hydrocarbons, benzene, toluene and the xylenes, and a film of the ester deposited on the hands from a solution in an organic solvent is not removed by water, soap and water or abrasives.
GB151158A 1958-01-16 1958-01-16 Higher fatty acid esters of dextran Expired GB885516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB151158A GB885516A (en) 1958-01-16 1958-01-16 Higher fatty acid esters of dextran

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB151158A GB885516A (en) 1958-01-16 1958-01-16 Higher fatty acid esters of dextran

Publications (1)

Publication Number Publication Date
GB885516A true GB885516A (en) 1961-12-28

Family

ID=9723240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB151158A Expired GB885516A (en) 1958-01-16 1958-01-16 Higher fatty acid esters of dextran

Country Status (1)

Country Link
GB (1) GB885516A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003106447A1 (en) * 2002-06-17 2003-12-24 Dsm Ip Assests B.V. Process for the preparation of dioxane acetic acid esters
US6870059B2 (en) 2000-07-19 2005-03-22 Astrazeneca Uk Ltd. Process for the preparation of 2-(6-substituted-1,-3-dioxane-4-yl)acetic acid derivatives
US7157255B2 (en) 2000-05-09 2007-01-02 Astrazeneca Uk Limited Process for the preparation of dihydroxy esters and derivatives thereof
DE102008003271A1 (en) 2008-01-02 2009-07-09 Friedrich-Schiller-Universität Jena Preparing dextran fatty acid ester, useful e.g. to coat instruments and materials e.g. implants, medical purposes and embed biomaterials, comprises esterifying the dextran or dextran derivative with a carboxylic acid e.g. lauric acid
US7718812B2 (en) 2001-12-27 2010-05-18 Astrazeneca Uk Limited Process for the preparation of 2-(6-substituted-1,3-dioxane-4-yl) acetic acid derivates

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7157255B2 (en) 2000-05-09 2007-01-02 Astrazeneca Uk Limited Process for the preparation of dihydroxy esters and derivatives thereof
US7416865B2 (en) 2000-05-09 2008-08-26 Astrazeneca Uk Limited Process for the preparation of dihydroxy esters and derivatives thereof
US7732171B2 (en) 2000-05-09 2010-06-08 Astrazeneca Uk Limited Process for the preparation of dihydroxy esters and derivatives thereof
US7888083B2 (en) 2000-05-09 2011-02-15 Astrazeneca Uk Limited Process for the preparation of dihydroxy esters and derivatives thereof
US6870059B2 (en) 2000-07-19 2005-03-22 Astrazeneca Uk Ltd. Process for the preparation of 2-(6-substituted-1,-3-dioxane-4-yl)acetic acid derivatives
US7642363B2 (en) 2000-07-19 2010-01-05 Astrazeneca Uk Ltd. Process for the preparation of 2-(6-substituted-1,3-dioxane-4-YL) acetic acid derivatives
US7989643B2 (en) 2000-07-19 2011-08-02 Astrazeneca Uk Ltd. Process for the preparation of 2-(6-substituted-1,3-dioxane-4-yl)acetic acid derivatives
US7718812B2 (en) 2001-12-27 2010-05-18 Astrazeneca Uk Limited Process for the preparation of 2-(6-substituted-1,3-dioxane-4-yl) acetic acid derivates
WO2003106447A1 (en) * 2002-06-17 2003-12-24 Dsm Ip Assests B.V. Process for the preparation of dioxane acetic acid esters
EP1375493A1 (en) * 2002-06-17 2004-01-02 Dsm N.V. Process for the preparation of an dioxane acetic acid ester
US7442811B2 (en) 2002-06-17 2008-10-28 Astrazeneca Uk Limited Process for the preparation of dioxane acetic acid esters
DE102008003271A1 (en) 2008-01-02 2009-07-09 Friedrich-Schiller-Universität Jena Preparing dextran fatty acid ester, useful e.g. to coat instruments and materials e.g. implants, medical purposes and embed biomaterials, comprises esterifying the dextran or dextran derivative with a carboxylic acid e.g. lauric acid

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