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Preparation method of lac aqueous dispersion and application of lac aqueous dispersion in coating

A technology of dispersion and glue, applied in the direction of oil/fat/wax inactive ingredients, etc., can solve the problems of easy cracking of capsules, brittle capsules, increased production cost, etc., and achieve the effect of feasible production and stable quality

Active Publication Date: 2016-09-28
SHANGHAI POLYMER PHARMA & EXCIPIENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1), the coating process consumes a lot of alcohol, and 1kg of shellac needs to consume at least 12kg of 95% ethanol, which increases the production cost;
[0004] 2) A large amount of alcohol is used, even if the investment in fixed assets is increased during production: the establishment of explosion-proof workshops, the purchase of explosion-proof equipment, and the adoption of explosion-proof measures, there are still great potential safety hazards;
Many dietary supplements, such as fish oil soft capsules, are in the form of soft capsules. If ethanol is used as a solvent coating, the capsules will become brittle, and the capsules will easily crack after long-term storage, which will affect product quality.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] Present embodiment shellac aqueous dispersion, the composition of this shellac aqueous dispersion comprises shellac, emulsifying agent, alkalizing agent, water and ethanol, and described shellac content is 5%, emulsifying agent content is 0.1%, alkalizing agent content The content of water is 0.1%, the content of water is 90%, and the content of ethanol is 4.8%, and described percentage is all the percentage relative to shellac aqueous dispersion mass.

[0030] In the present embodiment, shellac is selected from shellac, emulsifier is selected from polyoxyethylene oleate, and alkalizing agent is selected from the mixture of sodium oxide and sodium hydroxide.

[0031] The preparation method of aqueous shellac dispersion comprises the steps in the present embodiment:

[0032] The first step is to dissolve shellac in ethanol aqueous solution and soak overnight to obtain liquid A; wherein the amount of shellac is 10%; the concentration of ethanol in the ethanol aqueous solu...

Embodiment 2

[0038] Present embodiment shellac water dispersion, the composition of this shellac water dispersion comprises shellac, emulsifying agent, alkalizing agent, water and ethanol, and described shellac content is 10%, emulsifying agent content is 1.2%, alkalizing agent content The content of water is 5%, the content of water is 78.8%, and the content of ethanol is 5%, and described percentage is all the percentage relative to shellac aqueous dispersion quality.

[0039] In this example, bleached shellac is selected as the shellac, a mixture of Span60 and Span80 is selected as the emulsifier, and Span60 and Span80 are used in a 1:1 mixture, and diisopropylamine is selected as the alkalizing agent.

[0040] The preparation method of aqueous shellac dispersion comprises the steps in the present embodiment:

[0041] The first step, dissolving shellac in an aqueous ethanol solution, soaking overnight to obtain liquid A; wherein the amount of shellac is 50%; the concentration of ethanol...

Embodiment 3

[0047] Present embodiment shellac aqueous dispersion, the composition of this shellac aqueous dispersion comprises shellac, emulsifying agent, alkalizing agent, water and ethanol, and described shellac content is 15%, emulsifying agent content is 1.5%, alkalizing agent content It is 5.5%, the content of water is 68%, the content of ethanol is 10%, and described percentage is all the percentage relative to shellac aqueous dispersion mass.

[0048] In the present embodiment, shellac is selected bleached shellac, emulsifier is selected sodium lauryl sulfate, and alkalizing agent is selected the mixture of potassium phosphate, sodium hydrogen phosphate, disodium hydrogen phosphate, sodium phosphate.

[0049] The preparation method of aqueous shellac dispersion comprises the steps in the present embodiment:

[0050] The first step, dissolving shellac in an aqueous ethanol solution, soaking overnight to obtain liquid A; wherein the amount of shellac is 80%; the concentration of etha...

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Abstract

The invention discloses a lac aqueous dispersion which is prepared from, by mass, 5-50% of lac, 0.1-1.5% of emulsifying agent, 0.1-8.0% of basifier, 40-90% of water and 0.1-20% of ethyl alcohol. The lac aqueous dispersion contains the lac, the emulsifying agent, the basifier, the water and the ethyl alcohol, can be used for enteric or taste masking film coating production of food, medicine and dietary supplements. The lac aqueous dispersion is prepared in an emulsifying mode, the dispersion feature of lac is changed in a physical way, lac is finally dispersed in water, and no high-concentration organic solvent is adopted.

Description

technical field [0001] The invention belongs to the technical field of drug coating, food coating and dietary supplement coating, and in particular relates to a preparation method of an aqueous shellac dispersion and its application in coating. Background technique [0002] Traditional shellac needs to use no less than 95% ethanol as a solvent, soak and dissolve overnight, and then sieve before it can be used for coating, and the solid content is very low, which makes: [0003] 1), the coating process consumes a lot of alcohol, and 1kg of shellac needs to consume at least 12kg of 95% ethanol, which increases the production cost; [0004] 2) A large amount of alcohol is used, even if the investment in fixed assets is increased during production: the establishment of explosion-proof workshops, the purchase of explosion-proof equipment, and the adoption of explosion-proof measures, there are still great potential safety hazards; [0005] 3) The solid content of the coating is ...

Claims

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Application Information

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IPC IPC(8): C08J3/03C08L93/02A61K47/44
CPCA61K47/44C08J3/03C08J2393/02
Inventor 杨学成王懋
Owner SHANGHAI POLYMER PHARMA & EXCIPIENT
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