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Amphiphilic polycaprolactone polyol as well as preparation method and application thereof

A polycaprolactone and amphiphilic technology, applied in the field of polyols, can solve the problems of increasing VOC content, poor acid and alkali resistance of carboxylates of hydrophilic groups, poor storage stability and pH stability of polyurethane emulsion, etc., to achieve The effect of stable storage and simplified production process

Pending Publication Date: 2022-02-15
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Daicel has prepared amphiphilic polycaprolactone polyol products with DMPA as the starting agent. When preparing water-based polyurethane with this product, there is no need for water-based chain extension steps, but it is still necessary to add amine neutralizers for neutralization Salt formation, this process not only increases the VOC content of the product, but also due to the poor acid and alkali resistance of the hydrophilic group carboxylate, the storage stability and pH stability of the prepared polyurethane emulsion are also poor

Method used

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  • Amphiphilic polycaprolactone polyol as well as preparation method and application thereof
  • Amphiphilic polycaprolactone polyol as well as preparation method and application thereof
  • Amphiphilic polycaprolactone polyol as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Add 2.50kg of initiator 1,4-butanediol-2-sodium sulfonate and 23.61kg of caprolactone into the reaction kettle, raise the temperature to 180°C, add 1.31g of stannous octoate, react for 4h, - Vacuumize at 0.090 kPa gauge pressure for 2 hours to remove unreacted monomers, cool to 150°C and discharge to obtain amphiphilic polycaprolactone polyol A with a hydroxyl value of 56.1 mg KOH / g.

Embodiment 2

[0063] Add 2.50kg of initiator 1,4-butanediol-2-sodium sulfonate and 7.27kg of caprolactone into the reaction kettle, raise the temperature to 180°C, add 1.66g of dibutyltin dilaurate, and react for 5h , Vacuum at -0.090kPa gauge pressure for 1h to remove unreacted monomers, cool down to 150°C and discharge to obtain amphiphilic polycaprolactone polyol B with a hydroxyl value of 149.6mg KOH / g.

Embodiment 3

[0065] Add 2.50kg of initiator 1,4-butanediol-2-sodium sulfonate and 4.68kg of caprolactone into the reaction kettle, raise the temperature to 160°C, add 2.15g of zinc 2-hexylhexanoate, and react 5h, vacuumize at -0.090kPa gauge pressure for 1.5h to remove unreacted monomers, cool down to 150°C and discharge to obtain amphiphilic polycaprolactone polyol C with a hydroxyl value of 204.0mg KOH / g.

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Abstract

The invention provides amphiphilic polycaprolactone polyol as well as a preparation method and application thereof. The polycaprolactone polyol is prepared by taking a sulfonate type initiator and caprolactone as raw materials through ring opening polymerization. The polycaprolactone polyol provided by the invention contains a sulfonate group; when the polycaprolactone polyol is used for preparing waterborne polyurethane, the steps of waterborne chain extension and neutralization salt formation are not needed, so the preparation process of the waterborne polyurethane is simplified; and the prepared polyurethane material can be applied to the fields of adhesives, coatings and the like.

Description

technical field [0001] The invention belongs to the field of polyols, and in particular relates to an amphiphilic polycaprolactone polyol and its preparation method and application. Background technique [0002] Polycaprolactone polyol (PCL) is a kind of polyol prepared by ring-opening polymerization of caprolactone, which has good flexibility and stretchability. The polyurethane prepared with polycaprolactone polyol as soft segment has better hydrolysis resistance, heat resistance and weather resistance than polyurethane prepared with adipic acid polyester polyol. At the same time, polycaprolactone polyurethane also has excellent low temperature resistance. Flexibility, tear resistance and abrasion resistance, therefore, are widely used in the fields of elastomers, adhesives and coatings. [0003] Polycaprolactone polyol has excellent hydrolysis resistance and can be used to prepare waterborne polyurethane. At present, when preparing water-based polyurethane with polycapr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/688C08G63/08C08G18/46C09D175/06C09J175/06
CPCC08G63/6882C08G63/08C08G18/4676C08G18/0828C09D175/06C09J175/06
Inventor 李杨张存玉付小亮何勇
Owner WANHUA CHEM GRP CO LTD
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