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Amine polyether polyol and polyurethane foam compositions prepared from cyclic amine compounds

A technology of polyether polyol and composition, applied in the field of polyurethane foam, which can solve the problems of unfavorable impact, tear strength and elongation at break, etc.

Active Publication Date: 2017-08-29
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, tear strength and elongation at break can be adversely affected due to high levels of crosslinking

Method used

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  • Amine polyether polyol and polyurethane foam compositions prepared from cyclic amine compounds
  • Amine polyether polyol and polyurethane foam compositions prepared from cyclic amine compounds
  • Amine polyether polyol and polyurethane foam compositions prepared from cyclic amine compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] Preparation of BPEA-polyol

[0105] Bis(2-(piperazin-1-yl)ethyl)amine (BPEA) was used as the initiator and alkoxylated with propylene oxide to a molecular weight of about 4700 Mw, followed by a 17.5% ethylene oxide capping step.

[0106] About 200 g of BPEA (829 mmol; 241.38 Da mw) was added to the reactor and heated to a temperature of ~105°C. After 2 hours, 3 moles of propylene oxide (174.24 g; 58.08 Da) were added to the reactor. Potassium hydroxide was added to the reaction product to a final concentration of 2500 ppm to react the remaining propylene oxide and ethylene oxide for the subsequent capping reaction. A filtration process using magnesium silicate to remove remaining catalyst completes the final mixture. Add 600ppm of Irganox 1076 to prevent oxidation and degradation.

Embodiment 2-6

[0108] Preparation of polyurethane foam

[0109] All foams of Examples 2-6 were prepared by box foaming by blending approximately 500 g of polyol according to the type and amount in Table 1 with surfactant, catalyst, water, and mixing at 2000-2500 RPM. The blend was then held for about 12 hours to allow it to fully degas. Next, about 250 g of the polyol / catalyst / surfactant mixture was placed in a cup and stirred for 15 seconds, then the polyisocyanate was added to the cup while stirring for an additional 5-10 seconds depending on reactivity. The contents of the cups were poured into plastic bins and the free rise reactivity and rise height were measured using a FOAMAT device. The results are shown in figure 1 and 2 middle.

[0110] Table 1

[0111]

[0112]

[0113] Polyol A: DNC701.01

[0114] Polyol B: Specflex NC632: Specific capped polyol with high MW, functionality and primary hydroxyl content.

[0115] Catalyst – A: BPEA

[0116] Catalyst - B: DABCO33LV: co...

Embodiment 7-9

[0121] Preparation of polyurethane foam

[0122] The foams of Examples 7-9 were prepared according to the methods described in Examples 2-6, using the amounts of reagents according to Table 2. Various foam properties were determined and are shown in Table 3.

[0123] Table 2

[0124]

[0125]

[0126] Polyol C: Specflex NC700: Copolymer polyol formed by in-situ polymerization of styrene and acrylonitrile

[0127] Polyol B: Specflex NC632: Specific capped polyol with high MW, functionality and primary hydroxyl content.

[0128] Catalyst – A: BPEA

[0129] Catalyst – B: DABCO33LV: Contains 33% Triethylenediamine and 67% Dipropylene Glycol (AirProducts)

[0130] Catalyst - C: NIAX A-1 : Contains 70% of bis(2-dimethylaminoethyl) ether diluted with 30% by weight of dipropylene glycol (Momentive).

[0131] DEOA: Diethanolamine

[0132] Surfactant: Tegostab B8736LF2: Silicone surfactant (Evonik)

[0133] Voranate T-80:TDI80 / 20(Dow)

[0134] table 3

[0135]

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Abstract

The present invention describes cyclic amine compounds useful as catalysts for forming compositions in the form of polyurethanes, as well as amine alkoxylates and amine polyether polyols formed from cyclic amines. The cyclic amine compounds of the present invention provide unique benefits to reaction compositions, methods, and polyurethane foams based on their desirable physical and catalytic properties.

Description

[0001] claim of priority [0002] This application claims U.S. Provisional Application Serial No. 61 / 581,323 filed on December 29, 2011 entitled "FORMATION OF HIGHERMOLECULAR WEIGHT CYCLIC POLYAMINE COMPOUNDS FROM CYCLIC POLYAMINE COMPOUNDS" and filed on October 24, 2012 entitled " AMINEPOLYETHER POLYOLS AND POLYURETHANE FOAM COMPOSITIONS MADE FROM CYCLIC AMINECOMPOUNDS", the entirety of which is hereby incorporated by reference in its entirety. field of invention [0003] The present invention relates to cyclic amines, amine alkoxylates derived from cyclic amines, amine polyether polyols derived from cyclic amines, and polyurethane foams prepared from cyclic amines, amine alkoxylates or amine polyether polyols. Background technique [0004] Polyurethane foams are usually prepared by reacting polyols with isocyanates in the presence of water which acts as a blowing agent. The reactions leading to the formation of polyurethane foams generally consist of urethane reactions (g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D295/13C08G18/32
CPCC07D295/13C08G18/2081C08G18/506C08G2110/0083C08G18/3246C08G18/72
Inventor S·W·金E·昆塔尼尔拉J-P·马西D·H·班克E·B·沃格尔F·R·M·格拉夫A·J·伯奇
Owner DOW GLOBAL TECH LLC
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