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Hot-melting pressure sensitive adhesive and preparation method thereof

A technology of hot-melt pressure-sensitive adhesive and molten state, which is applied in the fields of cosmetics, medical equipment, medicine, and health care, and can solve the problems of poor compatibility, poor air permeability, and easy oxidation of pressure-sensitive adhesives

Active Publication Date: 2012-08-15
HENAN LINGRUI PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a hot-melt pressure-sensitive adhesive and a preparation method thereof, which can effectively solve the problems of poor compatibility between pressure-sensitive adhesives and drugs, easy oxidation during preparation, weather resistance and Poor stability, poor air permeability, and skin irritation

Method used

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  • Hot-melting pressure sensitive adhesive and preparation method thereof

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Effect test

Embodiment 1

[0016] Embodiment 1 (preparation of hot-melt pressure-sensitive adhesive)

[0017] The present invention is made by weight: styrene-isoprene-styrene 380g, liquid paraffin 260g, rosin glyceride 270g, zinc oxide 50g and BHT1010 10g are made as raw material, and its preparation method is: first 380g styrene- Isoprene-styrene, 260g of liquid paraffin and 2.5g of BHT1010 are placed in a kneader, at 120°C, mixed and stirred for 1 hour to a molten state, then 270g of rosin glyceride and 2.5g of BHT1010 are added, at 120°C, After mixing and stirring for 20 minutes to a molten state, add 50 g of zinc oxide and 5 g of BHT1010, and mix and stir for 20 minutes at 110° C. to a molten state to obtain the product.

Embodiment 2

[0018] Embodiment 2 (preparation of hot-melt pressure-sensitive adhesive)

[0019] The present invention is by weight: 360g of styrene-isoprene-styrene, 200g of liquid paraffin, 60g of rosin glyceride, 80g of C5 hydrogenated petroleum resin, 150g of terpene resin, 60g of light powder and 2,6-ditertiary 30g of butyl-p-cresol is made from 30g of butyl-p-cresol. The preparation method is as follows: first knead 360g of styrene-isoprene-styrene, 200g of liquid paraffin and 7.5g of 2,6-di-tert-butyl-p-cresol In the machine, at 130°C, mix and stir for 1 hour to a molten state, then add 60g rosin glyceride, 80g C5 hydrogenated petroleum resin, 150g terpene resin and 7.5g 2,6-di-tert-butyl p-cresol, in After mixing and stirring at 130°C for 20 minutes to a molten state, add 60g of light powder and 15g of 2,6-di-tert-butyl-p-cresol, and mix and stir at 120°C for 20 minutes to a molten state.

Embodiment 3

[0020] Embodiment 3 (preparation of hot-melt pressure-sensitive adhesive)

[0021] The present invention is by weight: styrene-isoprene-styrene 340g, liquid paraffin 170g, rosin glyceride 100g, C5 hydrogenated petroleum resin 70g, terpene resin 110g, zinc oxide 70g, light powder 20g and BHT1010 50g It is made of raw materials, and its preparation method is: firstly put 340g of styrene-isoprene-styrene, 170g of liquid paraffin and 12.5g of BHT1010 in a kneader, mix and stir for 1 hour at 125°C until it melts, and then Add 100g rosin glyceride, 70g C5 hydrogenated petroleum resin, 110g terpene resin and 12.5g BHT1010, at 125°C, mix and stir for 20 minutes to melt, then add 70g zinc oxide, 20g light powder and 25g BHT1010, at 125°C , Mix and stir for 20 minutes until molten state, that is, too.

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Abstract

The invention relates to a hot-melting pressure sensitive adhesive and a preparation method thereof. The hot-melting pressure sensitive adhesive effectively solves the problems that the compatibility of a pressure sensitive adhesive and medicines is poor, the pressure sensitive adhesive is easy to oxidize, poor in weather resistance, stability and ventilation and can stimulate the skin. The hot-melting pressure sensitive adhesive is prepared from the following raw materials by weight percent: 20%-45% of thermoplastic elastomer SIS (Styrene Isoprene Styrene), 20%-40% of tackifying resin, 15%-35% of softener, 1%-8% of antioxidant and 3%-15% of filler. The preparation method comprises the following steps of: heating, mixing and stirring the thermoplastic elastomer SIS, the softener and 0.25%-2% of antioxidant to the melting state; then adding the tackifying resin and 0.25%-2% of antioxidant, heating, mixing and stirring to the melting state; and adding the filler and 0.5%-4% of antioxidant, and heating, mixing and stirring to the melting state. The hot-melting pressure sensitive adhesive is transparent and environment-friendly, can not cause skin allergy, has good aging resistance and good aerobic degradation effect, and is also applied to emplastrum.

Description

technical field [0001] The invention relates to industries such as medicine, health care, cosmetics and medical equipment, especially a hot-melt pressure-sensitive adhesive used in external plasters, chemical medicine patches, medical equipment and health care products and a preparation method thereof. Background technique [0002] Hot-melt pressure-sensitive adhesives are widely used in China, but due to the limitation of hot-melt adhesive accessories and the lack of research and application of hot-melt adhesives in the pharmaceutical industry, hot-melt pressure-sensitive adhesives have not been well promoted and applied in the pharmaceutical industry . [0003] Hot-melt pressure-sensitive adhesive itself is a kind of viscoelastic body, which has good hot-viscosity performance at a certain temperature, and is solid at room temperature with good elastic deformation. Hot-melt pressure-sensitive adhesives are generally composed of skeleton materials, tackifying resins, soften...

Claims

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Application Information

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IPC IPC(8): C09J153/02C09J145/00C09J157/02C09J193/04C09J123/22A61K9/70A61K47/32A61K47/44A61K36/9068A61K36/81A61K36/61A61P29/00A61K31/045A61K31/125A61K31/135A61K31/58A61K31/618A61K35/55
Inventor 熊维政程剑军江开勇卢玉斌姜家书李磊李敦明谢其亮张志国吕平黄燕琴马正伟
Owner HENAN LINGRUI PHARMA
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