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Polyester-polyether polyol, preparation method thereof as well as prepared high-resilience polyurethane foamed plastic and preparation method thereof

A polyester polyol and ether polyol technology, which is applied in the field of polyurethane high-resilience foam, can solve the problems of product use and storage effects, material properties are not stable enough, and the color value of synthetic products is deep. Excellent hydrolysis resistance and stable physical and chemical properties

Inactive Publication Date: 2017-09-08
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the defect of above-mentioned two kinds of materials, someone adopts special polyether diol to modify polyester diol, discloses a kind of modified polyester polyol and its Preparation method and application: Polyadipate diol is modified by polycarbonate and polyether polyol. To a certain extent, this method still has simple physical mixing between polyester and polyether, and the material properties are not enough. Stable; Chinese invention patent application (publication number CN103380162A) discloses a method for preparing polyester ether alcohol: use pyromellitic anhydride and small molecular diol to synthesize polyester diol, and then use amine catalysts, homocyclic Propylene oxide is catalyzed for polymerization. The color value of the synthesized product by this method is relatively dark, and there are residues of amine substances, which will affect the use and storage of the product; the Chinese invention patent application (publication number CN 103998488A) discloses a method for preparing mixed polyester -The method of polyether polyols, by polymerizing alkylene oxides in the presence of carboxylic acid initiators to obtain the target product, and the polymerization process uses double metal cyanide complexes and certain magnesium groups, group 3-15 Catalyzed by a mixture of lanthanide or lanthanide metal compounds, the catalyst is complex, not easy to obtain, the amount used is large, and there is a risk of activation failure of alkylene oxide in the synthesis process

Method used

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  • Polyester-polyether polyol, preparation method thereof as well as prepared high-resilience polyurethane foamed plastic and preparation method thereof
  • Polyester-polyether polyol, preparation method thereof as well as prepared high-resilience polyurethane foamed plastic and preparation method thereof
  • Polyester-polyether polyol, preparation method thereof as well as prepared high-resilience polyurethane foamed plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) The preparation method of polyester polyol is as follows:

[0042] The raw materials and proportioning are shown in Table 1;

[0043] Put adipic acid, neopentyl glycol, diethylene glycol, ε-caprolactone and catalyst tetrabutyl titanate into the reaction kettle, replace the air in the kettle with nitrogen, start stirring, raise the temperature to 120°C for 1 hour, and then , heat up to 230°C, keep warm until the acid value is less than 20mgKOH / g, start vacuuming, and gradually increase the vacuum degree. When the acid value is less than 1mgKOH / g and the hydroxyl value is 122mgKOH / g, the temperature is lowered to obtain the polyester multi-component alcohol.

[0044] (2) The preparation method of polyester-ether polyol is as follows:

[0045] Add 920g of polyester polyol (hydroxyl value 122mgKOH / g) and 0.0707g of double metal cyanide complex (DMC catalyst) prepared in step (1) to the pressure-resistant reactor, then heat up to 130°C and vacuumize To -0.09MPa, blow ...

Embodiment 2

[0048] (1) The preparation method of polyester polyol is as follows:

[0049] The raw materials and proportioning are shown in Table 1;

[0050]Put adipic acid, neopentyl glycol, diethylene glycol, ε-caprolactone and catalyst tetrabutyl titanate into the reaction kettle, replace the air in the kettle with nitrogen, start stirring, raise the temperature to 125°C for 1 hour, and heat up to 230°C, keep warm until the acid value is less than 20mgKOH / g, start vacuuming, gradually increase the vacuum degree, and when the acid value is less than 1mgKOH / g and the hydroxyl value is 122mgKOH / g, lower the temperature to obtain the polyester polyol.

[0051] (2) The preparation method of polyester-ether polyol is as follows:

[0052] Add polyester polyol 736g (hydroxyl value 122mgKOH / g) prepared by step (1), polytetrahydrofuran diol 132g (hydroxyl value 170mgKOH / g), double metal cyanide complex (DMC catalyst) in the pressure-resistant reactor 0.0606g, then heated up to 140°C, evacuated ...

Embodiment 3

[0055] (1) The preparation method of polyester polyol is as follows:

[0056] See Table 1 for raw materials and proportioning;

[0057] Put adipic acid, neopentyl glycol, diethylene glycol, ε-caprolactone and catalyst tetrabutyl titanate into the reaction kettle, replace the air in the kettle with nitrogen, start stirring, raise the temperature to 130°C for 1 hour, and then heat up to 230°C, keep warm until the acid value is less than 20mgKOH / g, start vacuuming, gradually increase the vacuum degree, and when the acid value is less than 1mgKOH / g and the hydroxyl value is 125mgKOH / g, lower the temperature to obtain the polyester polyol.

[0058] (2) The preparation method of polyester-ether polyol is as follows:

[0059] Add polyester polyol 673.2g (hydroxyl value 125mgKOH / g) prepared by step (1), polytetrahydrofuran diol 165g (hydroxyl value 170mgKOH / g), double metal cyanide complex (DMC catalyst) in the pressure-resistant reactor ) 0.106g, then heated up to 150°C, evacuated ...

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Abstract

The invention belongs to the technical field of polymer synthesis and particularly relates to polyester-polyether polyol, a preparation method thereof as well as prepared high-resilience polyurethane foamed plastic and a preparation method thereof. The polyester-polyether polyol is a copolymer of a mixture, as an initiator, of polyester polyol or polyether polyol and polytetrahydrofuran glycol and alkylene oxide and has a hydroxyl value being 30-75mgKOH / g; the alkylene oxide is ethylene oxide and propylene oxide; and the polyester polyol is prepared by adopting adipic acid, neopentyl glycol, diethylene glycol and epsilon-caprolactone. The polyester-polyether polyol is colorless and transparent and has the characteristics of low content of residual catalyst and stable properties; and the prepared high-resilience polyurethane foamed plastic has the characteristics of good formula latitude, excellent mechanical property and good weatherability.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to a polyester-ether polyol, its preparation method and the polyurethane high-resilience foam plastic and the preparation method of the polyurethane high-resilience foam plastic. Background technique [0002] Polyester polyol and polyether polyol are the two main raw materials in polyurethane. Polyester polyol type PU materials have poor hydrolysis resistance, poor compatibility with other additives in the formula, poor storage stability, poor temperature resistance, are solid or high-viscosity liquids at room temperature, and are not easy to operate, etc.; polyether polyol type PU materials The mechanical properties are poorer than polyester type, but due to its good hydrolysis resistance stability, it is liquid at room temperature, low viscosity, wide foaming range, easy to operate, good economy, easy to obtain raw materials and other characteristics, it is m...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G18/42C08G18/76C08G18/32C08G18/66C08G63/672C08G65/28C08J9/04
CPCC08G18/4018C08G18/3275C08G18/4286C08G18/4812C08G18/4837C08G18/4854C08G18/6648C08G18/6681C08G18/7621C08G63/672C08G65/2609C08G65/2645C08G2410/00C08G2650/58C08J9/04C08J2375/08
Inventor 李剑锋孙兆任王文涛张士虎
Owner SHANDONG INOV NEW MATERIALS CO LTD
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