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Organosilicone surfactant for producing flexible foam

A technology of surfactant and polyurethane foam, which is applied in the field of polyurethane foam forming composition, and can solve the problems such as deterioration of foam mechanical properties

Inactive Publication Date: 2014-03-26
MOMENTIVE PERFORMANCE MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A common problem with almost all conventional cell openers is that they cause a deterioration in the mechanical properties of the foam, especially the compressive strength

Method used

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  • Organosilicone surfactant for producing flexible foam
  • Organosilicone surfactant for producing flexible foam
  • Organosilicone surfactant for producing flexible foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] 50.05 grams have the average general formula CH 2 =CHCH 2 Olefin-substituted polyoxyalkylenes of OH, 29.99 grams having the average general formula Me 3 SiO(MeHSiO) 1 SiMe 3 The mixture of organohydrogenpolysiloxane and nitrogen is stirred well and lightly sprayed. The flask was heated to 70°C. H in ethanol in an amount sufficient to provide 10 ppm Pt 2 PtCl 6 .6H2O solution was added to the mixture. The heat source was removed and the exothermic hydrosilylation reaction was allowed to begin until no further temperature rise was recorded. When the maximum temperature rose to 95 °C, 119.96 g of Me 3 SiO(MeHSiO) 1 SiMe 3 Add dropwise to the flask. The maximum temperature rose to 105°C and the flask was kept at this temperature for 1.5 hours. The residual SiH content was measured and observed to be below 0.1 g / cc, which means the hydrosilylation reaction is complete. The copolymer was cooled to 25°C and filtered.

Embodiment 2

[0137] 74.33 grams have the average general formula CH 2 =CHCH 2 O(CH 2 CH 2 O) 1.0 Olefin-substituted polyoxyalkylenes of H, 25.13 grams having the average general formula Me 3 SiO(MeHSiO) 1 SiMe 3 The mixture of organohydrogenpolysiloxane and nitrogen is stirred well and lightly sprayed. The flask was heated to 70°C. H in ethanol in an amount sufficient to provide 10 ppm Pt 2 PtCl 6 .6H2O solution was added to the mixture. The heat source was removed and the exothermic hydrosilylation reaction was allowed to begin until no further temperature rise was recorded. The highest temperature rose to 95 °C, and 100.54 g of Me 3 SiO(MeHSiO) 1 SiMe 3 Add dropwise to the flask. The maximum temperature was raised to 105°C and the mixture was allowed to stir for an additional 1.5 hours. The SiH content was measured and it was below 0.1 g / cc, which means the hydrosilylation reaction was complete. Allow the mixture to cool and cool the copolymer down to 25°C and filter.

Embodiment 3

[0139] The 110 grams have the average general formula CH 2 =CHCH 2 O(CH 2 CH 2 O) 3.45 Olefin-substituted polyoxyalkylenes of H, 18 grams having the average general formula Me 3 SiO(MeHSiO) 1 SiMe 3 The mixture of organohydrogenpolysiloxane and nitrogen is stirred well and lightly sprayed. The flask was heated to 80°C. H in ethanol in an amount sufficient to provide 10 ppm Pt 2 PtCl 6 .6H2O solution was added to the mixture. The heat source was removed and the exothermic hydrosilylation reaction was allowed to begin until no further temperature rise was recorded. The maximum temperature rose to 95 °C, and 72 g of Me 3 SiO(MeHSiO) 1 SiMe 3 Add dropwise to the flask. The maximum temperature was raised to 105°C and the reaction was kept stirring for 1.5 hours. SiH was measured and below 0.1 g / cc which means the hydrosilylation reaction was complete and the copolymer was cooled down to 25°C and filtered.

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Abstract

The invention provides a polyurethane foam forming composition of a surfactant with general formula R13Si(OSiR2G)xOSiR33, wherein each of R1, R2 and R3 is an alkyl group with 1-10 carbon atoms; G is a group with general formula -R4(OR5)yA; R4 is a bivalent alkyl group with 2-4 carbon atoms; R5 is ethylidene or propylidene; A is a hydroxyl group; x is a number from 1 to 5; and y is a number from 0 to 10. The composition can be used for generating polyurethane foam with high concentration of open pores, improved dry / wet compressive deformation and low fugitive emission.

Description

technical field [0001] The present invention relates to a polyurethane foam-forming composition (polyurethane foam-forming composition), which contains a silicone surfactant having a side chain hydroxyl-terminated polyalkylene oxide group, a polyurethane foam generated from the polyurethane foam-forming composition and Process for making said polyurethane foam. The present invention provides flexible polyurethane foams with greater open cell concentration, better compression set, and / or low fugitive emissions. Background technique [0002] Foams, which are resilient, can be produced by utilizing polyurethane foam-forming compositions containing highly reactive organic polyisocyanates and high molecular weight polyols with a level of primary hydroxyl group content. Such foams are referred to as "high resilience" foams. [0003] High resilience foams have found widespread use as cushioning materials in furniture and car seats. Most importantly, these foams have been used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K5/5419C08G18/28
CPCC08K5/5419
Inventor 戴泽亮黄辉张俊罗杰·克里斯托弗·克拉克保罗·爱德温·奥斯丁
Owner MOMENTIVE PERFORMANCE MATERIALS INC
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