Unlock instant, AI-driven research and patent intelligence for your innovation.

Hydrophilic breathable medical hot melt pressure sensitive adhesive matrix and preparation method thereof

A melting pressure-sensitive adhesive matrix and air permeability technology, which is applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem of insufficient hydrophilicity and air permeability, poor air permeability and perspiration effect, and types and limited drug content, etc., to achieve good hydrophilicity and air permeability

Active Publication Date: 2020-01-17
GUILIN UNIV OF ELECTRONIC TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Judging from the existing technology, most hot-melt pressure-sensitive adhesives are based on one or several polymer materials as the matrix, and then supplemented with various additives to realize the preparation of pressure-sensitive adhesives. The structure of the hot-melt pressure-sensitive adhesive is further improved, especially in the application of medical plasters. There are still some obvious deficiencies in the hot-melt pressure-sensitive adhesive, such as: insufficient hydrophilicity and air permeability. As a result, the type and amount of drugs that the medical plaster can load are limited, and the air permeability and perspiration effect are poor when the plaster and the skin are attached.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrophilic breathable medical hot melt pressure sensitive adhesive matrix and preparation method thereof
  • Hydrophilic breathable medical hot melt pressure sensitive adhesive matrix and preparation method thereof
  • Hydrophilic breathable medical hot melt pressure sensitive adhesive matrix and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Formulation:

[0022] 70 parts of polyisobutylene (polyisobutylene N50), 30 parts of methyl vinyl silicone rubber, 10 parts of plasticizer (paraffin oil), 10 parts of silicate clay (sepiolite); among them, sepiolite has been subjected to the following Impurity removal treatment: take sepiolite and place it in hydrochloric acid with a concentration of 1mol / L, stir and soak it at 70°C for 2 hours, take it out, wash it with water until it is neutral, and dry it.

[0023] (2) Preparation method:

[0024] ① Weigh each component according to the formula and set aside;

[0025] ② Soak polyisobutylene in plasticizer until it swells;

[0026] ③ Put the swollen polyisobutylene and methyl vinyl silicone rubber in a rubber internal mixer, and knead at a speed of 50r / min at 180°C for 20min; then add silicate clay, and mix at 180°C at a speed of 20r / min The mixing speed is 40min to obtain the hydrophilic air-permeable medical hot-melt pressure-sensitive adhesive matrix. The s...

Embodiment 2

[0044] (1) Formulation:

[0045] 75 parts of polyisobutylene (polyisobutylene N50), 25 parts of methyl vinyl silicone rubber, 15 parts of plasticizer (naphthenic oil), 5 parts of silicate clay (illite); among them, illite has undergone the following removal in advance Miscellaneous treatment: take illite and place it in hydrochloric acid with a concentration of 2mol / L, stir and soak it at 60°C for 2 hours, take it out, wash it with water until it is neutral, and dry it.

[0046] (2) Preparation method:

[0047] With embodiment 1.

Embodiment 3

[0049] (1) Formulation:

[0050] Polyisobutylene (polyisobutylene N50) 65 parts, methyl vinyl silicone rubber 35 parts, plasticizer (composed of wax oil and naphthenic oil in a weight ratio of 1:1) 10 parts, silicate clay (made of montmorillonite soil and kaolin at a weight ratio of 1:1) 8 parts; wherein, montmorillonite and kaolin have been subjected to the following impurity removal treatment in advance: take montmorillonite and kaolin respectively with sulfuric acid with a concentration of 1mol / L at 60 ° C Stir and soak for 2 hours, take it out, wash with water until neutral, and dry.

[0051] (2) Preparation method:

[0052] With embodiment 1.

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 hydrophilic breathable medical hot melt pressure sensitive adhesive matrix and a preparation method thereof. The medical hot melt pressure sensitive adhesive matrix consistsof the following components in parts by weight: 65-75 parts of polyisobutylene, 25-35 parts of methyl vinyl silicone rubber, 5-15 parts of a plasticizer and 5-10 parts of silicate clay. The preparation method comprises the following steps of: soaking the polyisobutylene in the plasticizer until swelling, melting and blending the swollen polyisobutylene with the methyl vinyl silicone rubber, and then adding the silicate clay for blending to obtain the product. The medical hot melt pressure sensitive adhesive matrix has a hot melt pressure sensitive adhesive matrix similar to a double continuousphase structure and has good hydrophilicity and air permeability.

Description

technical field [0001] The invention relates to a hot-melt pressure-sensitive adhesive, in particular to a hydrophilic and air-permeable medical hot-melt pressure-sensitive adhesive matrix and a preparation method thereof. Background technique [0002] Hot-melt pressure-sensitive adhesive (HMPSA) is a combination of hot-melt and pressure-sensitive dual characteristics. It is coated in a molten state, and can be bonded by applying a small finger pressure after cooling and solidification. It changes the physical state by changing the temperature. class of adhesives. Compared with traditional solvent-based pressure-sensitive adhesives, hot-melt pressure-sensitive adhesives have the advantages of simple process, safety and environmental protection. [0003] Judging from the existing technology, most hot-melt pressure-sensitive adhesives are based on one or several polymer materials as the matrix, and then supplemented with various additives to realize the preparation of pressur...

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
IPC IPC(8): C09J123/20C09J183/07C09J11/04
CPCC09J11/04C09J123/22C08L83/04C08K3/346
Inventor 李艾浓王玉峰闫普选韩飞雪马滨
Owner GUILIN UNIV OF ELECTRONIC TECH