Organosilicon surfactant and application thereof in preparation of slow-rebound polyurethane foam body

A surfactant and silicone technology, applied in the chemical industry, can solve the problems of poor porosity and environmental protection, and achieve the effects of porosity and stability, uniform cells, and strong stability

Inactive Publication Date: 2020-07-31
SHANGHAI MAIPU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The object of the present invention is to provide a kind of organosilicon surfactant and its application in the preparation slow rebound polyurethane foam, described this organosilicon surfactant a

Method used

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  • Organosilicon surfactant and application thereof in preparation of slow-rebound polyurethane foam body
  • Organosilicon surfactant and application thereof in preparation of slow-rebound polyurethane foam body
  • Organosilicon surfactant and application thereof in preparation of slow-rebound polyurethane foam body

Examples

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Example Embodiment

[0052] The volatility test process of polyurethane foam is: weigh 10-15 mg of polyurethane foam sample and heat it at 90°C under the protection of nitrogen for 30 minutes. The volatilized organic matter is absorbed by the adsorption resin at -150°C, and then the adsorption resin When heated to 280°C, all the substances enter the GC-MASS for gas chromatography and mass spectrometry analysis. Example 1

[0053] Preparation of organosilicon surfactant

[0054] In a 250L reactor with fixed device, constant temperature function, mechanical stirring, thermocouple and nitrogen gas, 82.8kg 2,5,8,11-tetramethyl-6-dodecyne-5,8- The acetylene glycol polyoxyethylene ether (called polyether A) with an average molecular weight of 942 Daltons starting with the methyl end capped by the glycol. In the structure of the acetylene glycol capped polyether, the acetylene glycol group: ring The molar ratio of oxypropylene group: ethylene oxide group is 1:2:13; the methyl-terminated polyoxyethylene ethe...

Example Embodiment

[0055] Example 2

[0056] Preparation of organosilicon surfactant

[0057] In a 250L four-neck flask with fixed device, constant temperature function, mechanical stirring, thermocouple and nitrogen gas, 48kg 4,7-dimethyl-5-decyne-4,7-diol A methyl-terminated polyoxyethylene ether with an average molecular weight of 700 Daltons (called polyether A). In the structure of the acetylene glycol-terminated polyether, acetylene glycol group: propylene oxide group: ethylene oxide The molar ratio of the alkyl groups is 1:1:10; the methyl-terminated polyoxyethylene ether (called polyether B) with an average molecular weight of 3000 Daltons starting with the addition of 120 kg of allyl alcohol, in the polyether B , The molar ratio of ethylene oxide group and propylene oxide group is 50:50, and then 40kg of low hydrogen polysiloxane ( Abbreviated as MD 55 D’ 13 M) Put it into a four-necked flask, start stirring, use a heating mantle to heat to 80°C, stir for 5 minutes, add 15ppm Pt in ethanol...

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Abstract

The invention discloses an organosilicon surfactant, which has the following general formula shown in the specification. The invention also provides an application of the organosilicon surfactant in preparation of a slow-rebound polyurethane foam body. The invention also provides a preparation method of the organosilicon surfactant, which comprises subjecting terminated alkynediol polyether, terminated allyl alcohol polyether and low-hydrogen-content polysiloxane to a hydrosilylation reaction under the action of a platinum catalyst to prepare the organosilicon surfactant containing carbon-carbon double bonds. The balance between the opening property and the stability of the polyurethane foam is realized by designing the quantity and the structure of the polyether and the low-hydrogen-content silicone oil.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to an organosilicon, in particular to an organosilicon surfactant and its application in the preparation of slow-rebound polyurethane foam. Background technique [0002] Slow rebound polyurethane foam is a new type of functional foam in polyurethane flexible foam (commonly known as sponge). The density range of slow rebound polyurethane foam is usually greater than 24kg / m 3 , also known as memory foam, viscoelastic foam, its unique feature is that it can conform to the shape of the load, so that the contact area is maximized, the stress gradient is minimized, the stress concentration point can be relieved, and there is no local extrusion and thorn Pain. Therefore, slow rebound polyurethane foam is widely used as headrests, mattresses, cushions, etc., which is beneficial to the blood circulation of the human body and is a high-comfort health care foam. [0003] Slow resilience polyure...

Claims

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Application Information

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IPC IPC(8): C08G77/46C08J9/30C08L75/04B01F17/54C08G18/76C08G18/48C08G18/18C08G18/24C08G18/16C08G101/00C09K23/54
CPCC08G77/46C08J9/30C08G18/7621C08G18/48C08G18/18C08G18/246C08G18/165C08J2205/05C08J2375/04C08J2483/12C08G2101/00C09K23/00
Inventor 张文凯龚国安信延垒谢海波
Owner SHANGHAI MAIPU NEW MATERIAL TECH CO LTD
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