A kind of aqueous polyurethane emulsion and its preparation method and application

A water-based polyurethane and emulsion technology, applied in the field of water-based polyurethane technology application, can solve the problems of reducing human comfort and large stretching force, and achieve the effects of improving wearing comfort, reducing stress changes, and excellent resilience

Active Publication Date: 2021-11-02
HEFEI KETIAN WATERBORNE TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with natural rubber materials, water-based polyurethane materials have large tensile force and 10-100% high modulus in the case of small deformation, which reduces the comfort of the human body

Method used

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  • A kind of aqueous polyurethane emulsion and its preparation method and application
  • A kind of aqueous polyurethane emulsion and its preparation method and application
  • A kind of aqueous polyurethane emulsion and its preparation method and application

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Embodiment Construction

[0026] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0027] see Figure 1 to Figure 2 , the invention provides a kind of method of aqueous polyurethane emulsion, described method comprises the steps of S1 to S4:

[0028] S1: Prepare polytetrahydrofuran ether diol containing polyethylene glycol side chain; S2: Mix polytetrahydrofuran ether diol containing polyethylene glycol side chain with polyether diol to obtain a mixed alcohol; S3: mix the React the cooled mixed alcohol with diisocy...

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Abstract

The invention provides a kind of aqueous polyurethane emulsion and its preparation method and application, said method comprising the following steps: preparing polytetrahydrofuran ether diol containing polyethylene glycol side chain; Diol and polyether diol are mixed to obtain a mixed alcohol; the mixed alcohol after the cooling is reacted with diisocyanate and small molecule chain extender in a solvent to obtain a polymer; the polymer after the cooling is The water-based polyurethane emulsion is obtained by reacting with water and polyamine aqueous solution to remove the solvent, and the water-based polyurethane emulsion prepared by the method has tensile properties similar to natural rubber, and also has good moisture permeability and air permeability.

Description

technical field [0001] The invention relates to the technical application field of water-based polyurethane, in particular to a water-based polyurethane emulsion and its preparation method and application. Background technique [0002] In recent years, water-based polyurethane materials have shown broad application prospects in the field of medical devices. Using water-based polyurethane materials as raw materials to prepare condoms and medical gloves can effectively avoid the problems of strong odor and high allergy rate of natural rubber. Compared with natural rubber materials, water-based polyurethane materials have large tensile force and high modulus of 10-100% in the case of small deformation, which reduces the comfort of the human body. Contents of the invention [0003] The object of the present invention is to overcome the defect of prior art, provide a kind of aqueous polyurethane emulsion and its preparation method and application, the aqueous polyurethane emuls...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/12C08G18/32C08G18/48C08L75/08
CPCC08G18/12C08G18/3206C08G18/4808C08G18/4825C08G18/4837C08G18/4854C08G18/6685C08L75/08C08G18/3228
Inventor 李维虎郭文鹤朱保凌汪飞戴家兵
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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