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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 and its application in the preparation slow rebound polyurethane foam to solve The technical problems of poor open cells and environmental protection of the slow rebound polyurethane foam in the prior art

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

Experimental program
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Effect test

Embodiment 1

[0053] Preparation of Silicone Surfactant

[0054] In a 250L reactor with fixture, constant temperature function, mechanical stirring, thermocouple and nitrogen gas, add 82.8kg 2,5,8,11-tetramethyl-6-dodedecyne-5,8- Alkyne diol polyoxyethylene ether (referred to as polyether A) with an average molecular weight of 942 Daltons of methyl end-capped by diol. The molar ratio of oxypropylene group: ethylene oxide group is 1:2:13; adding 120kg of allyl alcohol starting methyl-terminated polyoxyethylene ether with an average molecular weight of 4000 Daltons (called polyether B), in this polyether B, the molar ratio of oxirane group and propylene oxide group is 48:52, then 55kg low hydrogen-containing polysiloxane ( MD for short 40 D' 5 M) Put it into a four-neck flask, start stirring, heat to 80°C with a heating mantle, stir for 5 minutes, add 15ppm of Pt chloroplatinic acid ethanol solution, and react for 4 hours to obtain a clear and transparent light yellow organosilicon copoly...

Embodiment 2

[0056] Preparation of Silicone Surfactant

[0057] In a 250L four-neck flask with a fixture, constant temperature function, mechanical stirring, thermocouple and nitrogen, add 48kg of 4,7-dimethyl-5-decyne-4,7-diol starting A polyoxyethylene ether with an average molecular weight of 700 Daltons terminated by a methyl group (referred to as polyether A). The molar ratio of the alkyl groups is 1:1:10; 120kg of polyoxyethylene ether (called polyether B) with an average molecular weight of 3000 Daltons (called polyether B) initiated by allyl alcohol and methyl-terminated is added. , the mol ratio of oxirane group and propylene oxide group is 50:50, then 40kg low hydrogen-containing polysiloxane ( MD for short 55 D' 13 M) Add in a four-necked flask, start stirring, heat to 80° C. with a heating mantle, stir for 5 minutes, add 15 ppm of Pt chloroplatinic acid ethanol solution, and react to obtain a clear and transparent light yellow organosilicon copolymer liquid after 4 hours. ...

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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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