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Flame-resistant type polyether polyol for sponges and preparation method thereof

A polyether polyol and flame retardant technology, which is applied in the field of polyether polyol for flame retardant sponge and its preparation, can solve the problems of difficult industrialized production, limited flame retardant effect, long reaction period, etc., and can achieve formula adjustment Flexible and convenient, low production cost, simple and easy preparation method

Inactive Publication Date: 2019-03-01
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese Patent Application No. 201711015817.6 mentions a preparation method of phosphorus-containing flame-retardant polyether polyol. The method uses the traditional KOH alkali metal catalyzed process. Contains a flame retardant element with limited flame retardant effect

Method used

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  • Flame-resistant type polyether polyol for sponges and preparation method thereof
  • Flame-resistant type polyether polyol for sponges and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 250g of polyester 1000, 93g of trihydroxymethylphosphine oxide, and 0.06g of a modified bimetallic catalyst into the reactor at room temperature, and vacuum dehydrate at -0.093MPa and 110°C for 2 hours; add 52g of propylene oxide to induce the activation reaction, When the pressure in the reaction device continues to drop to negative pressure and the temperature continues to rise, it indicates that the polymerization reaction has started. Continuously feed 2432g of propylene oxide and 149g of ethylene oxide, and the reaction temperature is 140°C; after the feeding is completed, continue the aging reaction for 1h, and then Vacuum degassing at -0.093 MPa for 1 hour, cooling to 80°C, and discharging to obtain the target polyether polyol A. The specific test data are shown in Table 1.

Embodiment 2

[0028] Add 750g of polyester 1000, 31g of trihydroxymethylphosphine oxide, and 0.32g of a modified bimetallic catalyst into the reactor at room temperature, and vacuum dehydrate at -0.093MPa and 110°C for 1 hour; add 39g of propylene oxide to induce the activation reaction, When the pressure in the reaction device continues to drop to negative pressure and the temperature continues to rise, it indicates that the polymerization reaction has started. Continuously feed 2098g of propylene oxide and 324g of ethylene oxide, and the reaction temperature is 130°C; after the feeding is completed, continue the aging reaction for 0.5h. Then vacuum degassing at -0.093MPa for 2h, cooling down to 80°C, and discharging to obtain the target polyether polyol B. The specific test data are shown in Table 1.

Embodiment 3

[0030] Add 500g of polyester 1000, 62g of trihydroxymethylphosphine oxide, and 0.19g of modified bimetallic catalyst into the reactor at room temperature, and vacuum dehydrate at -0.093MPa and 110°C for 1.5h; add 56g of propylene oxide to induce activation reaction , when the pressure in the reaction device continues to drop to negative pressure and the temperature continues to rise, it indicates that the polymerization reaction has started. Continuously feed 2255g of propylene oxide and 233g of ethylene oxide, and the reaction temperature is 135°C; after the feeding is completed, continue the aging reaction for 1h. Then vacuum degassing at -0.093MPa for 1.5h, cooling down to 80°C, and discharging to obtain the target polyether polyol C. The specific test data are shown in Table 1.

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Abstract

The invention relates to flame-resistant type polyether polyol for sponges and a preparation method thereof, and belongs to the technical field of polyether polyol synthesis. The invention further provides a scientific and reasonable, simple and easy preparation method. The flame-resistant type polyether polyol for the sponges referred is prepared through the mode that polyester 1000 and tris(hydroxymethyl) phosphorous oxide (THPO) are used as initiators and subjected to ring-opening polymerization with propylene oxide and ethylene oxide by using a modified bimetallic cyanide complex catalyst . According to the flame-resistant type polyether polyol for the sponges referred, raw materials are simple and easy to obtain, the cost is low, the structure is stable, and the anti-flammability is good.

Description

technical field [0001] The invention relates to a polyether polyol for flame-retardant sponge and a preparation method thereof, belonging to the technical field of polyether polyol synthesis. Background technique [0002] Polyurethane flexible foam is referred to as soft foam, commonly known as sponge, which refers to soft polyurethane foam with certain elasticity. It is mainly used for furniture cushions, vehicle seat cushions and various soft cushion laminated composite materials. The range is very wide. [0003] Sponge, as a kind of porous organic polymer, has strong flammability and has great safety hazards. The traditional method to improve the flame retardancy of sponge is to add halogen-containing polymers or halogen-containing flame retardants to the formula. Flame retardant compound. There are many problems in this method. The added flame retardant will reduce the mechanical properties of the sponge product; as time goes on, the flame retardant may migrate and pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G18/50C08G101/00
CPCC08G18/509C08G65/263C08G65/2639C08G2110/0083
Inventor 周玉波孙兆任李剑锋王文涛张德江
Owner SHANDONG INOV NEW MATERIALS CO LTD
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