Dialdehyde Starch
Technology, RawMaterials, MSDS, Product, Patent, Company Profile, Study, Report, Uses
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• A natural starch from wheat or corn which has been chemically modified, the resultant starch is oxidized starch or Dialdehyde starch.
• DAS is a polymeric dialdehyde prepared from selective oxidation of starch by periodate ions which cleaves the C2-C3 bond of the anhydroglucose units of the starch polysaccharide chain to form the dialdehyde groups.
• Synonyms are polydialdehyde, oxidized starch, polymeric dialdehyde, starch2,3-dialdehydo.
• There are many uses including the paper industry, where it has been mainly to improve the wet strength of consumer products. These products include toilet paper and paper towels.
• A reactive polymer with low toxicity, considering its reactive dialdehyde functional groups, similar to glutaraldehyde.
• DAS is essentially a highly modified starch in which the  Hydroxy groups are selectively attacked by periodic acid, severing the C-2 to C-3 bond to form dialdehyde starch.
• Obtained by oxidation of starch with periodic acid at controlled temperature and pH.
• The highly reactive Dialdehyde groups in starch can be used as cross linking agents. Most of the
  applications are based on a cross linking reaction, eg. cellulose in paper, cotton in textiles, with proteins, pharmaceuticals and leather.
• The capital investment for a capable of producing 120 tones Dialdehyde starch per annum has been estimated at Rs. 5 Lakhs. The material work costs upto Rs.5 per kg.
• It has wide application in tanning industry apart from this it also used in plywood industry, as a binding material in tobacco industry in protective coating industry.
• In the form of  solution, it can be used as masked chrome tanning agent & increase the capacity of chrome tanning agent alkali was carbonylation dialdehyde starch as a high degree of ionization and masked with a stronger role.
• In medical applications, DAS used as a chemical scavenger for urea and
  ammonia.

Technology

• Dialdehyde Starch.
• Wet strength development with Dialdehyde Starch.
• Novel antiviral activity of dialdehyde starch.
• Property of Dialdehyde Starch.
• Recent Progress in Dialdehyde Starch Technology.

Raw Materials

• Tapioca Starch.
• Sodium Iodate.
• Sodium Metaperiodate.

MSDS

• Dialdehyde Starch.
• Polymeric Dialdehyde.

Product

• Product description about Dialdehyde Starch.

Process

• Preparation of Dialdehyde Tapioca Starch.
• Chemical Process for Making Dialdehyde Starch.
• Preparation of a new dialdehyde starch derivative.
• Catalytic Activity of Dialdehyde Starch-Schiff Base Co(II) Complex.
• Hydrolysis of Dialdehyde Starch with Sulfurous Acid.
• Polymeric Products from the reaction of dialdehyde Starches with chlorine in methanol.
• Producing Dialdehyde Starch.

Patent

• Dialdehyde Starch as Gelatin Hardener.
• Method of Attaching Dialdehyde Starch to a surface & products produced.
• Mineral Tanned leather treated with Dialdehyde Starch.
• Thermoplastic Mixtures containing Dialdehyde Starch.
• Method of making nongelling aqueous cationic dialdehyde starch Compositions.

Suppliers

• Supplier List1.
• Supplier List2.
• List of Suppliers.
• Supplier from Florida.
• Supplier1 from Hong Kong.
• Supplier2 from Hong Kong.

Company Profile &Consultancy

• Company1 from India.
• Company2 from India.
• Company3 from India.
• Company4 from India.
• Consultancy from India.

Study

• Tanning Studies with Dialdehyde Starch.
• Mill Evaluation of Dialdehyde Starch-Protein glue for hardwood plywood manufacture.
• Binding of Papain to Dialdehyde Starch.
• Physical Properties of Egg-White Dialdehyde Starch Films.
• Dialdehyde Starch in paper Coatings containing Soy Flour-Isolated Soy Protein Adhesive.
• Studies on methods of Starch modification.
• Determination of Chromium and lead in periodic acid solution and dialdehyde starch.
• Studies on reuse of DAS tanning liquors in pertanning of hides for sole leather.
• Intrinsic Viscosity of Dialdehyde Starch in alkaline urea after reduction.
• Bacterial inactivation kinetics of dialdehyde starch aqueous suspension.
• Effect of dialdehyde starch derivatives on heavy metal uptake by maize.

Report

• Reactivity of Aldehyde groups in dialdehyde starch.
• Sustainable Processing of natural resources.
• Thermoplastic Gelatin Oxidized Starch.
• Paper-Plastic Films.

Uses

• DAS Application in drug carrier.
• Property improvement of fish water soluble protein films by DAS.
• A DAS pretannage for rapid tanning of sole leather.
• Modified Starch application in Leather Industry.

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