Organosilicon copolymer, preparation method and application thereof, polyurethane foam stabilizer and polyurethane foam

A polyurethane foam and silicone technology, applied in the field of polyurethane foam stabilizer and polyurethane foam, can solve problems such as environmental pollution, physical damage to production personnel, and reduce the performance of foam stabilizer, so as to avoid side reactions, avoid personal injury and harm the environment. pollution and overall performance improvement

Active Publication Date: 2022-01-14
南京美思德新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The allyl alcohol used in the above-mentioned patent documents is a highly toxic and highly irritating substance, which is easy to cause physical damage to production personnel and pollute the environment, and the activity of allyl alcohol is relatively high, CH 2 =CH-CH 2 -Easily isomerized to CH 3 -CH=CH-, the latter reacts slowly with the Si-H group in siloxane, and easily reacts with the -OH group in the resulting polyether molecule to form acetal; in addition, the terminal alcoholic hydroxyl group is easy to react with hydrogen-containing silicone oil Generate by-products, these reaction by-products inevitably exist in the foam stabilizer, reduce the performance of the foam stabilizer, and ultimately affect the performance of the polyurethane foam material
[0004] In order to solve the problem that there are many by-products in the reaction of preparing foam stabilizers in the prior art, which affect the performance of foam stabilizers and finally affect the performance of polyurethane foam products, and then provide a foam stabilizer with less pollution and excellent performance

Method used

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  • Organosilicon copolymer, preparation method and application thereof, polyurethane foam stabilizer and polyurethane foam
  • Organosilicon copolymer, preparation method and application thereof, polyurethane foam stabilizer and polyurethane foam
  • Organosilicon copolymer, preparation method and application thereof, polyurethane foam stabilizer and polyurethane foam

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preparation example Construction

[0038] In the second aspect, an embodiment of the present invention provides a method for preparing a silicone copolymer, comprising:

[0039] S1, synthesizing polyether methacrylate;

[0040] Reaction of methacrylic acid and polyether butyl glycidyl ether to form polyether methacrylate; specifically, mixing the methacrylic acid, the polyether butyl glycidyl ether, a polymerization inhibitor and a first catalyst Reaction; further, the polyether butyl glycidyl ether and the polymerization inhibitor are mixed, then the temperature is raised under a protective gas atmosphere, and then the temperature is maintained, and then the methacrylic acid and the first catalyst are added to carry out Reaction; The embodiment of the present invention does not use allyl alcohol as the polyether polyol of starter, thus has avoided the side reaction that brings because of allyl alcohol isomerization, and has also avoided because of using allyl alcohol to the personnel injury and pollution of t...

Embodiment 1

[0053] The embodiment of the present invention provides a silicone copolymer whose structural formula is characterized as follows: Among them, the structural formula of R is: -CH 2 CH(CH 3 ) COOCH 2 CHOHCH 2 O(CH 2 CH 2 O) 6 C 4 h 9 .

[0054] An embodiment of the present invention provides a method for preparing a silicone copolymer, comprising:

[0055] (1) React 119.5g of octamethylcyclotetrasiloxane, 42.22g of high hydrogen-containing silicone oil and 38.28g of hexamethyldisiloxane under the action of concentrated sulfuric acid at 30°C for 7 hours to obtain hydrogen-containing silicone oil.

[0056] (2) Weigh 472.86g polyether butyl glycidyl ether and 0.28g polymerization inhibitor tetramethylpiperidine nitrogen oxide and place it in the reactor, stir to make the polymerization inhibitor dissolve evenly, and under nitrogen protection, slowly heat up to 110 ~115°C, after the temperature is stabilized, add dropwise a mixture of 86.02g methacrylic acid and 0.55g ca...

Embodiment 2

[0059] The embodiment of the present invention provides a silicone copolymer whose structural formula is characterized as follows:

[0060] Among them, the structural formula of R is: -CH 2 CH(CH 3 ) COOCH 2 CHOHCH 2 O(CH 2 CH 2 O) 7 (CH 2 CH(CH3)O) 1 C 4 h 9 .

[0061] An embodiment of the present invention provides a method for preparing a silicone copolymer, comprising:

[0062] (1) React 106.34g of octamethylcyclotetrasiloxane, 56.14g of high hydrogen-containing silicone oil and 37.52g of hexamethyldisiloxane under the action of concentrated sulfuric acid at 30°C for 7 hours to obtain hydrogen-containing silicone oil.

[0063] (2) Take by weighing 452.85g polyether butyl glycidyl ether and 0.15g polymerization inhibitor tetramethylpiperidine nitrogen oxide and 0.10g p-hydroxyanisole and place in the reactor, stir to make the polymerization inhibitor dissolve evenly, Under the protection of nitrogen, slowly raise the temperature to 110-115°C. After the tempera...

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Abstract

The invention relates to the technical field of surfactants, in particular to an organosilicon copolymer, a preparation method and application thereof, a polyurethane foam stabilizer and polyurethane foam. The structural formula of the organic silicon copolymer is shown in the specification, wherein the structural formula of R is-CH2CH (CH3) COOCH2CHOHCH2O (CH2CH2O) x (CH2CH (CH3) O) yC4H9; wherein m is equal to 2.0 to 30.0, n is equal to 1.0 to 10.0, m + n is equal to 3.0 to 35.0, x is equal to 2.0 to 20.0, and y is equal to 0 to 10.0. The organosilicon copolymer not only can effectively regulate and control the size stability of the prepared polyurethane foam, but also can remarkably improve the overall performance of the polyurethane foam.

Description

technical field [0001] The invention relates to the technical field of surfactants, in particular to an organosilicon copolymer, a preparation method and application thereof, a polyurethane foam stabilizer and polyurethane foam. Background technique [0002] At present, the traditional polyurethane foam stabilizer, its preparation method is basically to initiate the reaction with allyl alcohol, and obtain the allyl polyether with alcoholic hydroxyl at the end through the polymerization of ethylene oxide and propylene oxide; then the allyl polyether React with low-hydrogen silicone oil to obtain polyurethane foam stabilizer. For example: patent document CN102226002A discloses a preparation method of polyurethane foam stabilizer, the method includes (1) making allyl alcohol, ethylene oxide and propylene oxide, under the action of a basic catalyst, react under certain conditions to obtain olefin Propyl-terminated copolyether; (2) The obtained allyl-terminated copolyether, low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46C08J9/00C08L75/08C08L83/12
CPCC08G77/46C08J9/0061C08J2375/08C08J2483/10C08J2205/05
Inventor 梁军孙添源
Owner 南京美思德新材料有限公司
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