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Application of hydroxyl-terminated polymer in preparation of multifunctional polyurethane flexible foam dressing

A hydroxyl-terminated polymer and polyurethane soft foam technology, which can be used in drug delivery, medical science, absorbent pads, etc., and can solve the problem of single function of polyurethane soft foam dressings

Active Publication Date: 2021-01-26
JIANGSU OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a method for preparing a multifunctional polyurethane soft foam dressing in order to solve the problem of single function of the existing polyurethane soft foam dressing

Method used

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  • Application of hydroxyl-terminated polymer in preparation of multifunctional polyurethane flexible foam dressing
  • Application of hydroxyl-terminated polymer in preparation of multifunctional polyurethane flexible foam dressing
  • Application of hydroxyl-terminated polymer in preparation of multifunctional polyurethane flexible foam dressing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation of embodiment 1 multifunctional polyurethane soft foam dressing-1

[0034] Step 1, preparation of functional foaming component (A-1)

[0035] Weigh successively 12 grams of hydroxyl-terminated polyethylene glycol monomethyl ether with a mass-average molecular weight of 2000, 12 grams of single-ended hydroxyl polyvinylpyrrolidone with a mass-average molecular weight of 3800, and a formula with a mass-average molecular weight of 2200 produced by Jiangsu Haian Petrochemical Factory. Bromide N-(hydroxyl-terminated polyethylene glycol-2000)-N-dodecyl-N,N-dimethylammonium with the structure shown in (I-1) 22 grams, sodium lauryl sulfate 4 g, Add 4 g of Dow Corning 198 silicone surfactant and 8 g of purified water together into a blender, and stir at room temperature for half an hour to prepare the functional foaming component (A-1).

[0036]

[0037] Step 2, the preparation of polyurethane prepolymer (B-1)

[0038] Add 76 grams of polyethylene glycol-2000...

Embodiment 2

[0041] The preparation of embodiment 2 multifunctional polyurethane soft foam dressing-2

[0042] According to the method and operation steps of Example 1, the brominated N-(hydroxyl-terminated polyethylene glycol-2000)-N-dodecyl- N,N-dimethylammonium is replaced by N-(hydroxyl-terminated polyethylene glycol-2000)-N-benzyl-N,N-dimethylammonium chloride of the structure shown in formula (I-2), that is Prepare multifunctional polyurethane soft foam dressing-2.

[0043]

Embodiment 3

[0044] The preparation of embodiment 3 multifunctional polyurethane soft foam dressing-3

[0045] According to the method and operation steps of Example 1, the brominated N-(hydroxyl-terminated polyethylene glycol-2000)-N-dodecyl- N,N-dimethylammonium is replaced by the chloride N-(terminated hydroxyl polyethylene glycol-2000)-N-benzyl-N,N-dimethylammonium of structure shown in formula (I-2); Step The polyether diol-2000 with a mass-average molecular weight of 2000 in the second is replaced with polytetrahydrofuran diol-3000 produced by BASF Company, and the multifunctional polyurethane soft foam dressing-3 is prepared.

[0046]

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Abstract

The invention discloses an application of a hydroxyl-terminated polymer in preparation of a multifunctional polyurethane flexible foam dressing. The application comprises the following steps: mixing hydrophilic substances including hydroxyl-terminated polyethylene glycol alkyl ether, single hydroxyl-terminated polyvinylpyrrolidone and hydroxyl-terminated polyether quaternary ammonium salt with a surfactant and water to prepare a functional foaming component A; reacting polyether polyol, a chain extender and a catalyst with polyisocyanate to prepare a polyurethane prepolymer component B; and mixing and foaming the functional foaming component A and the polyurethane prepolymer B to prepare the multifunctional polyurethane flexible foam plastic which is used for producing medical dressings with hydrophilic, water-absorbing, moisturizing, antibacterial, sterilizing, hemostatic and healing-promoting functions.

Description

technical field [0001] The invention relates to the application of a hydroxyl-terminated polymer in the preparation of multifunctional polyurethane flexible foam dressings, in particular to the preparation of hydroxyl-terminated polyethylene glycol monohydrocarbyl ether, single-terminated hydroxyl polyvinylpyrrolidone, and hydroxyl-terminated polyether quaternary ammonium salts. The application of the polyurethane soft foam dressing with the functions of hydrophilicity, water absorption, moisturizing, antibacterial, sterilizing, hemostasis, and promoting healing belongs to the field of medical functional polymer materials. Background technique [0002] Polyurethane (PU) is a general term for a class of macromolecular polymers containing urethane (-NHCOO-) repeating units in the main chain. It is usually produced by polyaddition reactions between polyols and polyisocyanates. Segment copolymers in various forms, including polyurethane elastomers, polyurethane fibers, polyureth...

Claims

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Application Information

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IPC IPC(8): C08G18/12C08G18/66C08G18/48C08G18/32C08G18/50C08G18/62A61L15/26A61L15/42A61L15/46C08G101/00
CPCC08G18/12C08G18/6677C08G18/4833C08G18/3206C08G18/4854C08G18/482C08G18/5021A61L15/26A61L15/42A61L15/46A61L2400/04A61L2300/404A61L2300/208C08G18/2835C08G18/285C08G18/2855C08L75/08
Inventor 斯琴高娃于法港王正建陈星月张田林
Owner JIANGSU OCEAN UNIV
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