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Polyether polyol as well as preparation method and application thereof

A technology of polyether polyol and polyether monomer, which is applied in the field of polyurethane synthetic leather, can solve the problems of poor folding resistance and rough creases, and achieve the effects of excellent processing performance, low energy consumption and wide source of raw materials

Pending Publication Date: 2021-10-12
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, existing CO 2 Based polyether polyols have higher molecular weight (>2000g·mol -1 ) characteristics, high molecular weight polyols make polyurethane synthetic leather easier to foam and have a higher bass thickness
However, for polyurethane resins for mirror synthetic leather, the polyurethane prepared by using high molecular weight polyols will make the low-temperature folding resistance worse, and will leave thicker creases after repeated twists and turns

Method used

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  • Polyether polyol as well as preparation method and application thereof
  • Polyether polyol as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 12mL ethylene glycol, 75mL polyether monomer PO, 16mL toluene, 1.5MPa CO 2 , and 0.3 g of a bimetallic catalyst were added to the reactor, and the polymerization reaction was carried out at 110° C. After the reaction was carried out for 90min, it was cooled to room temperature, and then the excess CO in the reactor was 2 Evacuate, then wash the autoclave with solvent, filter and remove the bimetallic catalyst. The obtained polyol was repeatedly washed with deionized water, and vacuum-dried at 90° C. to eliminate solvent and unreacted polyether monomers. The final produced CO 2 The hydroxyl value of the base polyether polyol is 110, and the acid value is 0.35.

[0030] Wherein the bimetallic catalyst is prepared according to the following method: 9g of barium carbonate and 11mL of ethyl ethoxy acetate are dissolved in 43mL of deionized water, stirred at 45°C for 30min to obtain solution A; then 0.6g of hexacyanocobalt Potassium acid potassium was mixed with 15mL deio...

Embodiment 2

[0032] 14mL propylene glycol, 75mL polyether monomer PO, 16mL cyclohexane, 1.7MPa CO 2 , and 0.2 g of bimetallic catalyst were added to the reactor, and the polymerization reaction was carried out at 115°C. After the reaction was carried out for 90min, it was cooled to room temperature, and then the excess CO in the reactor was 2 Evacuate, then wash the autoclave with solvent, filter and remove the bimetallic catalyst. The obtained polyol was repeatedly washed with deionized water, and vacuum-dried at 95° C. to eliminate solvent and unreacted polyether monomers. The final produced CO 2 The hydroxyl value of the base polyether polyol is between 110 and the acid value is 0.35.

[0033] Wherein the bimetallic catalyst is prepared according to the following method: 10g of barium chloride and 10mL of cyclohexane are dissolved in 45mL of deionized water, stirred at 48°C for 30min to obtain solution A; 0.8g of potassium hexacyanoferrate Compatible with 16mL of deionized water and...

Embodiment 3

[0035] 17mL methyl propylene glycol, 80mL polyether monomer PO, 20mL acetone, 2MPa CO 2 , and 0.5 g of a bimetallic catalyst were added to the reactor, and the polymerization reaction was carried out at 120° C. After the reaction was carried out for 90min, it was cooled to room temperature, and then the excess CO in the reactor was 2 Evacuate, then wash the autoclave with solvent, filter and remove the bimetallic catalyst. The obtained polyol was repeatedly washed with deionized water, and vacuum-dried at 95° C. to eliminate solvent and unreacted polyether monomers. The final produced CO 2 The hydroxyl value of the base polyether polyol is 114, and the acid value is 0.3.

[0036]Wherein the bimetallic catalyst is prepared according to the following method: 11g of zinc chloride and 13mL of ethyl acetate are dissolved in 47mL of deionized water, stirred at 50°C for 30min to obtain solution A; 0.9g of hexacyanodinickelic acid Potassium was mixed with 18mL deionized water and ...

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Abstract

The invention relates to polyether polyol as well as a preparation method and application thereof, CO2-based polyether polyol with low molecular weight is prepared through reaction by matching a qualified bimetallic catalyst with a polyether monomer, an initiator and the like in a proper proportion, and the CO2-based polyether polyol is applied to polyurethane resin for crease-free mirror leather. According to the polyhydric alcohol prepared by the invention, flexible polyether chains are doped into the polyhydric alcohol, so that the polyhydric alcohol can keep a good flowing state even under a low-temperature condition in winter, and the polyhydric alcohol is convenient to use in a production workshop; the prepared polyurethane resin for the mirror surface leather has good biodegradation and mechanical and physical properties; and the obtained synthesis leather has the structural characteristic of no bubbles, and can keep the characteristic of no creases under the condition of repeated bending. After a product prepared from the synthesis leather is used for a long time and is discarded, the synthesis leather can be completely biodegraded in a compost degradation mode, and the ecological environment cannot be polluted. The polyether polyol has the advantages of wide raw material source, lower cost, less energy consumption and simple preparation process.

Description

technical field [0001] The invention relates to the technical field of polyurethane synthetic leather, in particular to a polyether polyol and its preparation method and application. Background technique [0002] Polyurethane is widely used in leather, shoe soles, luggage, foam, coatings and adhesives. By properly adjusting certain proportions and components in polyurethane materials, industrial products with completely different properties can be obtained. Among them, polyurethane synthetic leather is considered as an important daily-use product because of its wide application fields, low price and physical properties not inferior to natural leather. It is widely used in luggage, clothing, sports shoes, football, automobiles and furniture. Polyol is the main raw material for the preparation of polyurethane synthetic leather. Most of the characteristics of polyurethane synthetic leather are related to the composition and type of polyol, which constitutes the soft segment of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G18/48C08G18/66C08G18/32
CPCC08G65/2609C08G65/2663C08G65/266C08G18/48C08G18/6674C08G18/3206
Inventor 倪俨杰韩驭章林佳琪徐怀志王元有周龙生
Owner YANGZHOU POLYTECHNIC INST
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