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Organosilicon surfactant and application of organosilicon surfactant to preparing polyurethane-molding high resiliency foam

A surfactant and silicone technology, applied in the preparation of polyurethane molded high resilience foam, silicone surfactant, polyurethane field, can solve the problem of surfactant surface tension, activity, foam stability decline, etc. Problems, to achieve the effect of significant technological progress, low odor, and less atomization

Active Publication Date: 2016-08-17
SHANGHAI MAIPU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a silicone surfactant and its application in the preparation of polyurethane molded high resilience foam, said silicone surfactant and its application in the preparation of polyurethane molded high resilience foam The application in the body solves the technical problem of using high vacuum to extract the small molecular residues of silicone surfactants at high temperature in the prior art, resulting in the decrease of surface tension, activity and foam stability of product surfactants

Method used

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  • Organosilicon surfactant and application of organosilicon surfactant to preparing polyurethane-molding high resiliency foam
  • Organosilicon surfactant and application of organosilicon surfactant to preparing polyurethane-molding high resiliency foam
  • Organosilicon surfactant and application of organosilicon surfactant to preparing polyurethane-molding high resiliency foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 The preparation method of low hydrogen-containing silicone oil

[0038] In a 250ml four-neck flask with a fixture, constant temperature function, mechanical stirring, thermocouple and nitrogen gas, add 5.1gM'D 5 M'(M' means (CH 3 ) 2 SiHO 1 / 2 , D means (CH 3 ) 2 SiO, 137.3g decamethylcyclopentasiloxane (referred to as D 5 ), 13.7g high hydrogen silicone oil MD' 20 M(D' means CH 3 SiHO; After starting to stir for half an hour, add 2g of acid clay catalyst, start stirring, nitrogen protection, use a heating mantle to heat to 25°C, stir for 36 hours, then add 4g of sodium bicarbonate, 2g of activated carbon, continue stirring for 2 hours, after vacuum filtration Get hydrogen silicone oil M'D 95 D' 10 M, the molecular weight of embodiment 1 measured by gel permeation chromatography (GPC) is 7802, which is basically consistent with the design molecular weight 7795, and the GPC data are shown in the table below.

[0039]

Embodiment 2

[0040] Embodiment 2 The preparation method of low volatile silicone surfactant

[0041] In a 500ml four-necked flask with a fixture, constant temperature function, mechanical stirring, thermocouple and nitrogen, add 50g of low hydrogen-containing silicone oil (Example 1); 133.3g of allyl alcohol starting, methyl End-capped polyoxyethylene ether with an average molecular weight of about 670, which contains 50 mole percent ethylene oxide groups and 50 mole percent propylene oxide groups (herein, referred to as polyether A); 66.7 g Propanol-initiated, methyl-terminated polyoxyethylene ether with an average molecular weight of about 1560, which contains 50 mole percent of ethylene oxide groups and 50 mole percent of propylene oxide groups (herein, referred to as Polyether B), start stirring, heat to 100°C with a heating mantle, stir for 5 minutes, add 30ppm of Pt chloroplatinic acid ethanol solution, after 4 hours of reaction, the product is called silicone surfactant here, is A ...

Embodiment 3

[0044] Example 3 Preparation of flexible polyurethane foam

[0045] Adopt above-mentioned embodiment 1, and select commercially available American air chemical industry for use Organosilicon DC-5950 was used as Comparative Example 1 to prepare a traditional polyurethane molded high-resilience foam, and the material temperature was 22 degrees. The results are shown in Table 1 below:

[0046] Table 1

[0047]

[0048]

[0049] Polyol GEP-330N is produced by Dow Chemical in the United States, with a hydroxyl value of 32mgKOH / g and a molecular weight of about 4800;

[0050] TDI80 / 20 is a mixture of 2,4-toluene diisocyanate with a mass percentage of 80% and 2,6-toluene diisocyanate with a mass percentage of 20%;

[0051] PMDI is crude MDI; T-9 is stannous octoate (AirProduct) from American Gas Company;

[0052] is an amine catalyst from American Gas Company;

[0053] The data in Table 1 shows that compared with Comparative Example 1, Example 2 of the present invention ...

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Abstract

The invention discloses a low-volatile-substance-content hydrogen-containing silicone oil. The general formula of the low-volatile-substance-content hydrogen-containing silicone oil is MZ'DxD'yM(2-Z), M' is (CH3)2SiHO1 / 2 or (CH3)2RSiO1 / 2 or (CH3)2R'SiO1 / 2, and M is (CH3)3SiO1 / 2, and Z is a numerical value which is larger than 0 and smaller than or equal to 2; D is (CH3)2SiO; D' is (CH3) (R)SiO2 / 2; R and R' are H or allyl polyoxyethylene ether respectively. The invention further provides a low-volatile-substance organosilicon surfactant, and the low-volatile-substance organosilicon surfactant is prepared in the mode that the hydrogen-containing silicone oil and at least one kind of allyl polyoxyethylene ether are subjected to a hydrosilylation addition reaction. The invention further provides an application of the organosilicon surfactant to preparing polyurethane-molding high resiliency foam. By means of the low-volatile organosilicon surfactant, the smell and the volatile-substance content of the foam can be obviously decreased.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to polyurethane, in particular to an organosilicon surfactant and its application in preparing polyurethane molded high-resilience foam. Background technique [0002] Polyurethane molded high resilience foam (commonly known as car seat cushion) is usually made of polyether polyol, graft polyether, water, amine catalyst, silicone surfactant, physical foaming agent, other additives and isocyanate at high speed Mixing under stirring, polyol, grafted polyether, diethanolamine, water and isocyanate react quickly under the action of catalyst to form a network-like foam, while the physical blowing agent volatilizes, water and isocyanate react to produce a large amount of gas to fill the foam body, causing the foam body to expand continuously, and finally the gas inside the foam body volatilizes from the foam body, and then volatilizes from the vent hole of the mold. The volume of the foam bod...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G77/12C08G65/28B01F17/54C08L75/04C08L87/00C09K23/54
CPCC08G65/2609C08G77/12C08G81/00C08L75/04C08L2203/14C09K23/00C08L87/005
Inventor 张文凯龚国安谢海波
Owner SHANGHAI MAIPU NEW MATERIAL TECH CO LTD
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