Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A kind of organic polyurethane foam dressing and preparation method thereof

A polyurethane foam, organic technology, applied in medical science, bandages, absorbent pads, etc., can solve the problems of inability to achieve long-term bacteriostasis, adhesion of wound dressings, and high cost of antibacterial agents. handy effect

Active Publication Date: 2015-12-09
HENAN HUIBO MEDICAL CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional wound dressings (such as gauze and cotton) have many disadvantages: they are easy to breed bacteria, and the wound exudate easily forms scabs with dry dermal tissue, which hinders epithelialization; at the same time, the wound is easy to adhere to the dressing, causing pain when the dressing is removed , causing secondary trauma
Although the antibacterial flexible polyurethane foam has an antibacterial effect, it cannot achieve long-term antibacterial inhibition, and the cost of antibacterial agents is high and the dosage is large.

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

[0025] The organic polyurethane foam dressing of the present invention is made of the following raw materials in proportion by weight: 20 parts of common polyether polyols, 20 parts of styrene-type grafted polyether polyols, 15 parts of ethylenediamine, 2 parts of pentane, 1 part of polymethylsiloxane-polyether copolymer, 1 part of ferrocene, 0.1 part of polyhexamethylene guanidine salt, 20 parts of hexamethylene diisocyanate, 1 part of pure water.

[0026] The method for preparing above-mentioned organic polyurethane foam dressing can be carried out in the following steps:

[0027] ①Weigh the common polyether polyol, styrene-type grafted polyether polyol, ethylenediamine, pentane, polymethylsiloxane-polyether copolymer, ferrocene, poly Hexamethylene guanidine salt and pure water were stirred at room temperature and 4000r / min for 50s to form a mixed solution;

[0028] ② Weigh the hexamethylene diisocyanate in the above weight ratio and add it to the mixed solution prepared in...

Embodiment 2

[0032] The organic polyurethane foam dressing of the present invention is made of the following raw materials in proportion by weight: 10 parts of ordinary polyether polyol, 40 parts of acrylonitrile-type grafted polyether polyol, 17 parts of ethylenediamine, and 3 parts of methylene chloride , 2.5 parts of low molecular weight alkoxy dimethyl polysiloxane, 2.5 parts of stannous 2-ethylhexanoate, 0.4 parts of triclosan, 50 parts of 4,4'-diphenylmethane diisocyanate, 2 parts of pure water .

[0033]The method for preparing above-mentioned organic polyurethane foam dressing can be carried out in the following steps:

[0034] ①Weigh the common polyether polyol, acrylonitrile type grafted polyether polyol, ethylenediamine, methylene chloride, low molecular weight alkoxy dimethyl polysiloxane, 2-ethyl polysiloxane and Stannous hexanoate, triclosan and pure water were stirred at room temperature for 55 seconds under the condition of 4000r / min to prepare a mixed solution;

[0035] ...

Embodiment 3

[0039] The organic polyurethane foam dressing of the present invention is made of the following raw materials in proportion by weight: 7.5 parts of ordinary polyether polyol, 52.5 parts of acrylonitrile-type grafted polyether polyol, 20 parts of ethylenediamine, trichlorofluoromethane 4 parts, 5 parts of low molecular weight high alkyl modified dimethylpolysiloxane, 5 parts of triethylenediamine, 0.8 part of chlorhexidine gluconate, 100 parts of toluene diisocyanate, 2 parts of pure water.

[0040] The method for preparing above-mentioned organic polyurethane foam dressing can be carried out in the following steps:

[0041] ①Weigh the common polyether polyol, acrylonitrile-type grafted polyether polyol, ethylenediamine, trichlorofluoromethane, low molecular weight high alkyl modified dimethyl polysiloxane respectively , triethylenediamine, chlorhexidine gluconate and pure water, at room temperature, stirred for 60s under the condition of 4000r / min to make a mixed solution;

...

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 provides an organic polyurethane foam dressing and a preparation method thereof. An antibacterial component is added into a polyurethane foam synthesis formula to prepare polyurethane foam with an antibacterial function; the obtained polyurethane foam is subjected to low-temperature plasma surface modification treatment; a plasma membrane layer is added on the surface of the antibacterial polyurethane foam material to form a speed limiting barrier. The polyurethane foam dressing prepared by the preparation method disclosed by the invention is high in compliance to a wound and is soft and comfortable; the preparation technology is simple, is convenient to operate and good in treatment effect, has the characteristic of long-time bacteriostat and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of polyurethane foam dressings, and in particular relates to an organic polyurethane foam dressing and a preparation method thereof. Background technique [0002] Skin damage caused by trauma, burns, and skin ulcers will cause a series of problems in the body, such as bacterial infection, increased metabolism, excessive loss of water and protein, endocrine and immune system dysfunction, etc., which may be life-threatening in severe cases. Therefore, after skin injury, it is usually necessary to use a skin substitute medical dressing to protect the wound, prevent wound infection and severe dehydration, provide a moist environment conducive to wound healing, and promote wound healing. During the wound healing process, the use of medical dressings can form a physical barrier to prevent dust, bacteria, etc. from entering the wound, facilitate wound care, and promote wound healing. [0003] In recent decades, wi...

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): A61L15/34A61L15/48A61L15/46
Inventor 朱天钢刘尧李延浩周新钦
Owner HENAN HUIBO MEDICAL CO LTD
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
Eureka Blog
Learn More
PatSnap group products