A kind of preparation method of shellac aqueous dispersion and its application on coating

A dispersion and glue technology, applied in the direction of non-active ingredients such as oil/fat/wax, can solve the problems of easy cracking of capsules, brittle capsules, affecting product quality, etc., and achieve the effect of feasible production and stable quality

Active Publication Date: 2019-02-15
SHANGHAI POLYMER PHARMA & EXCIPIENT
View PDF4 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08L93/02A61K47/44
CPCA61K47/44C08J3/03C08J2393/02
Inventor 杨学成王懋
Owner SHANGHAI POLYMER PHARMA & EXCIPIENT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap