TW201000144A - A process of production anhydride-modified chitosan - Google Patents

Abstract

Base agent is added after the chitosn was suspending in water, then a saturated or unsaturated organic diacid anhydride is added. The process has no solvent existing and carbon dioxide or ionic carbonate produced. The product can be used directly in cosmetic and Toiletry field.

Description

201000144 IX. Description of the Invention: [Technical Field] The present invention relates to a method for producing a chitin derivative. This chitin derivative can be used in an anionic cosmetic and cleaning article. [Prior Art]

US 3879376 : CHITOSAN DERIVATIVE, METHOD OF MAKING THE SAME AND COSMETIC COMPOSITION CONTAINING THE SAME US 3953608 : COSMETIC COMPOSITIONS FOR THE SKIN CONTAINING O A CHITOSAN DERIVATIVE

US 4031025 : CHITOSAN DERIVATIVE, SEQUESTERING AGENTS FOR HEAVY METALS

US 6656885 B2 : ANHYDRIDE-MODIFIED CHITOSAN, METHOD OF

PREPARATION THEREOF, AND FLUIDS CONTAINING SAME

US 6780822 B2 : ANHYDRIDE-MODIFIED CHITOSAN, METHOD OF

PREPARATION THEREOF, AND FLUIDS CONTAINING SAME ^ US 38793761 , US 39536081 , US 4031025 : After acid neutralization, it is denatured with an acid anhydride and an alkali. After completion, it must be precipitated with alcohol or citric acid to remove the defects of the deionization and carbonate ion process. . US 6656885 B2, US6780822 B2: After mixing with an acid anhydride, it is neutralized with an aqueous solution of sodium carbonate, and some examples are doped with decyl alcohol. The finished product has carbonate ions and a solvent, and is not suitable for use in cosmetics and cleaning products. [Centre content] Chitin is a cationic molecule, generally not compatible with anionic polymers, so a simple modification method is found to make it easy to be compatible with anions, and is a roll of the present invention. Wei Wei, shell 201000144 Zhang chitin, dianhydride into the reaction, the formation of bubbles in the formation and no solvent, so it can be easily straight [implementation] mixing] 2fi ^ A vulture is dispersed in 89 · In 65ml water, add 3·75g 臓10 尔 10 is 4 liters, succinic anhydride 1.10g is added twice, after the reaction is completed, add NaOH 10% 3g to complete neutralization, the acid of this finished product ^ ' ❹ ' f ί = i·1()g (0·011 meq) must be deleted. Qingcai is Wang Zhonghe, so the reaction rate is 臓_(G.67(四)乌职)=23·2% - composition ratio 2.50% 89. 65% 3.75% 1.10% 3.00% 100.00%

CHIT0SAN Η20

NaOH 10% SUCCINIC ANHYDRIDE NaOH 10% or less dry example Specific cosmetic ingredients contain the present invention: Example 1. Transparent essence composition ratio 3.10% Carbopol 940 0.20% 1.3 Butylene Glycol 5. 00% Methyl Paraben 0. 20% KOH 0.06 H2〇up to 100.00% This serum formula has excellent transparency and moisturizing sensation. 201000144 Example 2. Emulsion Composition Proportion The present invention 5.00 Carbopol 940 0.40 Minerol Oil 10.00 Tween 61 0.20 Methyl Paraben 0.20 KOH 0.12 H2〇 up to 100.00% This emulsion formulation has excellent storage stability. 〇 [Simple diagram description] [Main component symbol description]

Claims (1)

201000144 X. Patent application scope: 1. Manufacturing method of anhydride-modified chitin a. Disperse solid chitin in water. b. Add the test to solubilize chitin. c. Add the anhydride for a period of time. d. Neutralize to the equivalent point of the anhydride. 2. The range of Ι-a alkali agent can be NaOH, Κ0Η. 3. The acid of range 1-b is succinic anhydride, maleic anhydride. 4. Range 1-a, 1-b, i-c does not add solvent. 5. No carbon dioxide or carbonate ions are produced during the production of Zone 1.