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Tertiary amine group modified organosilicon polyether copolymer and its preparation method and application

A technology of polyether copolymer and silicone, which is applied in the field of tertiary amino-modified silicone polyether copolymer and its preparation, which can solve the problems of limited raw material structure and inability to adjust the structure of amine group, so as to improve the performance of polyurethane foam , Improve the modification effect, and the effect of small steric hindrance

Active Publication Date: 2022-07-05
JIANGSU MAYSTA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, because most of the raw materials used in the synthesis are diepoxides, diamine-based or tri-amine-based compounds, limited by the structure of the raw materials, the amine-based structure cannot be adjusted according to application requirements

Method used

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  • Tertiary amine group modified organosilicon polyether copolymer and its preparation method and application
  • Tertiary amine group modified organosilicon polyether copolymer and its preparation method and application
  • Tertiary amine group modified organosilicon polyether copolymer and its preparation method and application

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preparation example Construction

[0045] The preparation method of a kind of tertiary amine group modified organosilicon polyether copolymer that the embodiment of the present invention provides, comprises:

[0046] S1. Synthesize the polydimethyl-methylhydrogensiloxane with octamethylcyclotetrasiloxane, tetramethylcyclotetrasiloxane and hexamethyldisiloxane.

[0047] Specifically, octamethylcyclotetrasiloxane, tetramethylcyclotetrasiloxane and hexamethyldisiloxane are added to the reactor, and under the action of an acidic substance as a catalyst, the temperature is 25 to 90 ° C. The reaction is carried out for 3-24 h to obtain polydimethyl-methyl hydrogen siloxane.

[0048] Specifically, the catalyst includes at least one of acidic clay, sulfuric acid and trifluoromethanesulfonic acid.

[0049] Preferably, in order to ensure that the reaction proceeds quickly and materials are not wasted, the amount of catalyst used accounts for 0.5-5% of the mass of the reaction raw materials in the reaction system. The r...

Embodiment 1

[0066] The preparation method of the tertiary amine group-modified organosilicon polyether copolymer provided by the present embodiment is specifically:

[0067] (1) Add 180.6 g of octamethylcyclotetrasiloxane, 12.6 g of tetramethylcyclotetrasiloxane, and 6.8 g of hexamethyldisiloxane into the reactor, and react at 25° C. for 18 h under the action of 5 g of sulfuric acid to obtain Polydimethyl-methylhydrogensiloxane.

[0068] (2) 59.4 g of polydimethyl-methyl hydrogen siloxane, 62.4 g of hydroxy-terminated allyl polyether, and 28.2 g of epoxy-terminated allyl polyether were added to the reactor, and the mixture was heated to 5 ppm of chloroplatinic acid catalyst and 12ppm of triethylamine cocatalyst was heated and heated to 110°C under normal pressure for 3 hours to obtain an organosilicon polyether copolymer containing epoxy groups.

[0069] (3) 147.3 g of epoxy group-containing organosilicon polyether copolymer and 2.7 g of methylethanolamine were added to the reactor at 80...

Embodiment 2

[0073] The preparation method of the tertiary amine group-modified organosilicon polyether copolymer provided by the present embodiment is specifically:

[0074] (1) Add 175.5g of octamethylcyclotetrasiloxane, 14.6g of tetramethylcyclotetrasiloxane, and 9.9g of hexamethyldisiloxane into the reactor, and react at 30°C for 10h under the action of 2g of sulfuric acid to obtain Polydimethyl-methylhydrogensiloxane.

[0075] (2) 62.6 g of polydimethyl-methyl hydrogen siloxane, 62.9 g of hydroxy-terminated allyl polyether, and 24.5 g of epoxy-terminated allyl polyether were added to the reactor, and 4 ppm of chloroplatinic acid catalyst and 12ppm N,N triphenylphosphine co-catalyst was heated to 100°C under normal pressure for 5h reaction to obtain an organosilicon polyether copolymer containing epoxy groups.

[0076] (3) 146.2 g of epoxy group-containing organosilicon polyether copolymer and 3.8 g of N-methylbenzylamine were added to the reactor at 100° C. for 2 h, and separated and...

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Abstract

The invention discloses a tertiary amine group modified organosilicon polyether copolymer, a preparation method and application thereof, and relates to the technical field of organosilicon polyether copolymer. Tertiary amino-modified organosilicon polyether copolymer, its structural formula is: its preparation method is: polydimethyl-methyl hydrogen siloxane, allyl polyether with epoxy group at the end and hydroxyl at the end Or the allyl polyether of the alkyl group generates the organosilicon polyether copolymer containing the epoxy group at the end of the side chain through the hydrosilylation reaction; The tertiary amine group-modified organosilicon polyether copolymer is obtained by reacting the tertiary amine group with the epoxy group of the organosilicon polyether copolymer containing an epoxy group at the end of the side chain. The tertiary amine-modified organosilicon polyether copolymer shows good application prospects in terms of foam homogenization, wetting, leveling, emulsification, etc. Especially as a stabilizer for polyurethane foam, it can improve the catalytic efficiency and improve the performance of polyurethane foam.

Description

technical field [0001] The invention relates to the technical field of organosilicon polyether copolymers, in particular to a tertiary amine group-modified organosilicon polyether copolymer and a preparation method and application thereof. Background technique [0002] Silicone polyether copolymers are usually comb-structured copolymers with siloxane as the main chain and polyether as the side chain, in which siloxane acts as a hydrophobic group, so that the product has low surface tension and excellent chemical stability, Electrical insulation, anti-aging and other properties; polyether as a hydrophilic group makes the product have good surface activity. The change of the type, quantity and position of the side chain branched polyether can effectively adjust the hydrophilic and lipophilic properties of the copolymer, so as to obtain different properties such as foam stabilization, defoaming, lubrication and emulsification. However, with the development of technology and so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/00C08J9/00C08L75/08
CPCC08G81/00C08J9/0042C08J2375/08
Inventor 唐雄峰黄登登平翔林
Owner JIANGSU MAYSTA CHEM