FR1601483A - Starch etherification and gelatinisation - Google Patents

Starch etherification and gelatinisation

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Publication number
FR1601483A
FR1601483A FR1601483DA FR1601483A FR 1601483 A FR1601483 A FR 1601483A FR 1601483D A FR1601483D A FR 1601483DA FR 1601483 A FR1601483 A FR 1601483A
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FR
France
Prior art keywords
starch
gelatinisation
urea
reacting
formaldehyde resin
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
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French (fr)
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 filed Critical
Application granted granted Critical
Publication of FR1601483A publication Critical patent/FR1601483A/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B31/00—Preparation of derivatives of starch
    • C08B31/003—Crosslinking of starch

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Starch etherification and gelatinisation is accomplished by (a) reacting an aqueous suspension of starch with a cross-linking agent (divinyl sulphone or an urea/formaldehyde resin) until the starch is sufficiently insoluble that it deposits after soaking (5% concentration) in 1% aqueous NaOH for 30 min. at 24 deg.C., (b9 reacting an aqueous suspension of the product with a monofunctional etherifying agent (I) with swelling the starch to an extent that it is non-filtrable, and (c) filtering the starch and heating it in either alkali if divinyl sulphone was used or acid if a urea/formaldehyde resin was used, to break the crossinks and gelatinise the starch.
FR1601483D 1968-12-16 1968-12-16 Starch etherification and gelatinisation Expired FR1601483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR178513 1968-12-16

Publications (1)

Publication Number Publication Date
FR1601483A true FR1601483A (en) 1970-08-24

Family

ID=8658423

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1601483D Expired FR1601483A (en) 1968-12-16 1968-12-16 Starch etherification and gelatinisation

Country Status (1)

Country Link
FR (1) FR1601483A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2886867A1 (en) * 2005-06-14 2006-12-15 Univ Franche Comte Etablisseme PROCESS FOR PRODUCING A GEL-TYPE COMPOUND FOR THE TREATMENT OF EFFLUENT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2886867A1 (en) * 2005-06-14 2006-12-15 Univ Franche Comte Etablisseme PROCESS FOR PRODUCING A GEL-TYPE COMPOUND FOR THE TREATMENT OF EFFLUENT
WO2006134299A1 (en) * 2005-06-14 2006-12-21 Universite De Franche-Comte Method for making a gel-type compound, for treating effluent

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Legal Events

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ST Notification of lapse