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Novel hydrophilic adhesive compositions

A composition and adhesive technology, applied in adhesives, viscous dressings, surgical adhesives, etc., can solve problems such as insufficient adhesiveness and cohesion, impossibility, difficulty, etc.

Inactive Publication Date: 2005-07-27
LABORATOIRE URGO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] However, these hydrogels are insufficiently adhesive and cohesive
As a result, they are prone to splitting and peeling, the surface of the adhesive is often altered or contaminated by contact with skin, wounds or mucous membranes, and often they cannot be reapplied once peeled off
[0021] In contrast to the adhesives described, due to their hydrophilic nature, it is very difficult or even impossible to incorporate lipophilic or hydrophobic products in these hydrogels and this leads to the same formulation problems as above
[0022] Finally, the use of said hydrogels is generally more careful and complex than the use of adhesives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0204] For the purpose of simplification, a synthesis example of a typical amphoteric copolymer, which is used in all the adhesive compositions given below as examples, is given first.

preparation example I

[0208] 150 ml of toluene were introduced into the reactor under nitrogen atmosphere. Add Kraton purchased from SHELL  G 1901 (maleinated SEBS copolymer) 20 g. Heat with stirring at reflux (approximately 110° C.) until the maleated SEBS copolymer is completely dissolved. In addition, a solution of PEGME with a molar mass of 2000 and a trade name of polyethylene glycol monomethyl ether 2000 from Aldrich Company was prepared. 32.32 g of PEGME 2000 were dissolved in 100 ml of toluene by heating to its melting point with stirring. Still under stirring and reflux conditions, about 20 drops of sulfuric acid were added to the previously obtained maleated SEBS copolymer solution. Then, still under stirring and reflux conditions, the previously prepared PEGME 2000 in toluene solution was added. Thus, there are now 4 hydroxyl functions for each anhydride function. The resulting mixture was stirred continuously at reflux until the esterification reaction was complete, ie, about 30 t...

Embodiment 5

[0233] The airtight jacketed reactor is heated to a temperature between 90 and 100°C, constantly stirred with an agitator equipped with a deflocculation propeller, and the rotating speed is about 500 to 800rpm, and the following reactants are added continuously: 1 gram of amphoteric copolymer, 29.4 grams of water, 7.36 grams of BASF trade name Kollidon  30 polyvinylpyrrolidone polymers, 56.8 grams of TOTAL company trade name GEMSEAL  60 plasticizer (liquid mixture of saturated hydrocarbons), 0.2 grams of hydrophobic preservative (methylparaben) and 0.2 grams of hydrophilic preservative (propylparaben).

[0234] Stir continuously at 90-100°C until a homogeneous mixture is obtained.

[0235] Then, stir continuously at 90-100°C and introduce 5 grams of VECTOR  DPX-565, which is a mixture of triblock copolymer (styrene-isoprene-styrene) and diblock copolymer (styrene-isoprene) commercialized by EXXON MOBIL Chemical Company. Keep stirring constantly at the same temperature un...

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Abstract

The present invention relates to novel hydrophilic adhesive compositions, characterised in that they comprise a thermoplastic elastomer of poly(styrene-olefin-styrene) block copolymer type, a tackifying product, a liquid plasticizer, water and un amphiphilic copolymer. The invention also relates to the use of these novel hydrophilic adhesive compositions as adhesives for fixing any type of product, and notably products for medical, dermatological or cosmetological purposes, which come into contact with a wound, the skin or the mucous membranes.

Description

technical field [0001] The present invention relates to novel hydrophilic hot melt adhesive compositions characterized in that they comprise poly(styrene-olefin-styrene) block copolymer thermoplastic elastomers, tackifying products, liquid plasticizers, water and amphoteric copolymer. [0002] The invention also relates to the use of these new hydrophilic adhesive compositions as adhesives for fastening any type of product, in particular for the fastening of products for medical, dermatological or cosmetic purposes which come into contact with wounds, skin or mucous membranes. product. Background technique [0003] The preparation of adhesive compositions based on poly(styrene-olefin-styrene) block copolymer thermoplastic elastomers has long been known. [0004] Accordingly, pressure sensitive adhesives can be prepared by compositions comprising poly(styrene-olefin-styrene) block copolymers, tackifying products such as tackifying resins, liquid plasticizers such as plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/02A61F13/00A61K8/02A61K8/72A61K8/81A61L15/58A61L24/00C09J11/00C09J153/00
CPCA61F2013/00697A61F2013/00655C09J153/00C08L2666/24
Inventor 斯特凡·奥古斯特纳德格·德迈松
Owner LABORATOIRE URGO
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