Pressure sensitive viscous composite using rice flour as raw material and use thereof

A viscous composition, the technology of the composition, applied in the directions of starch adhesive, application, adhesive type, etc., can solve the problems of not being popularized and applied, the rebirth of cooked sticky rice cakes, and the short sticking time, etc. Long-term adhesion properties, reproducible tack, easy-to-use effects

Inactive Publication Date: 2009-04-29
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the material is placed or attached, it is easy to lose water and harden, the attachment time is short, an...

Method used

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  • Pressure sensitive viscous composite using rice flour as raw material and use thereof
  • Pressure sensitive viscous composite using rice flour as raw material and use thereof
  • Pressure sensitive viscous composite using rice flour as raw material and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 40g of glutinous rice starch to distilled water containing 2g of sodium tripolyphosphate to make 40% starch milk, stir and adjust the pH value to 10 with 10% sodium hydroxide solution, keep the reaction at 50°C for 24h, neutralize, filter, wash with water and dry , to get cross-linked glutinous rice starch CN1.

[0037] The same method was used to prepare cross-linked waxy corn starch CN2 and sticky sorghum rice cross-linked starch CN3.

Embodiment 2

[0039] Add 40 g of glutinous rice starch into distilled water containing 0.4 g of sodium trimetaphosphate to make 40% starch milk, stir and adjust the pH value to 10 with 10% sodium hydroxide solution, keep the reaction at 50°C for 24 hours, neutralize, filter, wash with water and Dry to obtain cross-linked glutinous rice starch CN4.

Embodiment 3

[0041] Rhubarb rice 100g, first soaked in 0.5% NaOH 200ml at 50°C for 24 hours, then removed the soaking solution, added new lye for wet grinding, and then put it into the sedimentation tank for particle size classification by precipitation method, removed the upper clarified part, washed with water The starch emulsion is centrifuged and dehydrated to separate the starch, dried and crushed to obtain the rhubarb rice starch.

[0042] Weigh 40 g of rhubarb rice starch in distilled water to obtain a starch milk with a mass fraction of 40%, place it in a constant temperature water bath at 30°C, stir, add 0.8 g of anhydrous sodium sulfate, and adjust the pH of the starch milk with a mass fraction of 10% sodium hydroxide. Adjust the value to 10, add 1.2 g of phosphorus oxychloride dropwise, and at the same time add an appropriate amount of 5% sodium hydroxide to keep the pH value of the starch milk constant, react for 2 hours, and neutralize the reaction mixture with hydrochloric aci...

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PUM

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Abstract

The invention relates to a pressure-sensitive glutinous composition which uses glutinous rice flour as a raw material and application thereof, which belong to the product and technology of environment-friendly hydrophilic pressure-sensitive adhesive. The glutinous rice flour, water, a liquid plasticizer at room temperature and a modifier are mixed, heated and cured to form the pressure-sensitive adhesive composition with application of tearability and adhesion; the glutinous rice flour is flour of sticky rice, glutinous corn, large glutinous millet, small glutinous millet and glutinous sorghum rice and one or a mixture of several of starch of the glutinous rice and modified starch. The composition can be combined with various substances, drugs with different types and the like to prepare various pastes, can be widely used in a transdermal administration system, an iontophoresis system, wound treatment, a biological medical electrode and other equipment and systems needing pressure-sensitive adhesive and is in particular suitable for the application of a traditional Chinese medicine transdermal administration preparation.

Description

technical field [0001] The invention relates to a pressure-sensitive adhesive composition using glutinous rice flour as a raw material and an application thereof, belonging to environment-friendly hydrophilic pressure-sensitive adhesive products and technologies. Background technique [0002] At present, the pressure-sensitive adhesives (PSA) used in self-adhesive tapes and medical fields, especially the pressure-sensitive adhesives (PSA) of transdermal drug delivery systems (TDDs), are usually polysiloxane (such as: polydimethylsiloxane, polybisphenyl silicones and blends of silicones), polyisobutylene (PIB), polyacrylates, acrylic acid and acrylate copolymers (such as copolymers of acrylic acid and 2-ethylhexyl acrylate or isooctyl acrylate material), and neoprene (polychloroprene). All of these pressure-sensitive adhesives are chemically synthesized products, which generate large pollution and energy consumption during the production process. At the same time, these hydr...

Claims

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Application Information

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IPC IPC(8): C09J103/02C09J11/08A61L24/08
Inventor 董岸杰邓联东
Owner TIANJIN UNIV
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