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Composite polyether polyol comprising polyurethane catalyst containing active groups and method for preparing same

A technology of polyurethane catalyst and polyether polyol, which is applied in the field of catalyst and polyurethane, can solve the problems that the storage stability of combined polyether polyol cannot be stored for a long time, and cannot be popularized and used on a large scale.

Active Publication Date: 2022-03-11
上海墨梵新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned foaming agent and tertiary amine catalyst exist simultaneously in the combined polyether polyol, which leads to the defect that the storage stability of the combined polyether polyol cannot be stored for a long time, resulting in the inability to be widely used

Method used

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  • Composite polyether polyol comprising polyurethane catalyst containing active groups and method for preparing same
  • Composite polyether polyol comprising polyurethane catalyst containing active groups and method for preparing same
  • Composite polyether polyol comprising polyurethane catalyst containing active groups and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Add 125 grams of glycerin and 180 grams of sucrose into a 2000 milliliter stainless steel test kettle with stirring, heating and temperature control devices, and add 2.5 grams of potassium hydroxide. After nitrogen replacement, start stirring and raise the temperature to 100°C, slowly add 700 grams of propylene oxide dropwise, after the addition of epoxy oxides, keep the reaction at 115°C for 1 hour, vacuum degas for 1 hour, and then add adipic acid neutralizer 6.6 gram, stirred for 40 minutes, blown and bottled to obtain 985 grams of polyether polyol according to Example 1, and the detected hydroxyl value was 447mgKOH / g.

example 2

[0060] Add 285 grams of pre-melted o-toluenediamine in a 2000 milliliter stainless steel test kettle with stirring, heating and temperature control devices, and add 2.5 grams of potassium hydroxide. After nitrogen replacement, start stirring and raise the temperature to 100°C, slowly add 713 grams of propylene oxide dropwise, after the addition of epoxide, keep the reaction at 115°C for 1 hour, vacuum degas for 1 hour, and then add adipic acid neutralizer 6.6 gram, stirred for 40 minutes, blowing and bottling obtained 978 grams of polyether polyol according to embodiment 2, and the detection hydroxyl value was 399mgKOH / g.

Embodiment 3

[0063] The above polyether polyol according to embodiment 1, the polyether polyol according to embodiment 2 and the polyether polyol processed by the traditional refining method obtained in the market are respectively formulated into combined polyether for rigid polyurethane foam, and storage test and Foam detection. The test results are shown in Table 1 below.

[0064] In Table 1, start time and gel time

[0065] According to the method specified in the standard "HG / T 4574-2014 Determination of Foaming Reaction Characteristics of Polyurethane Raw Materials".

[0066] Table 1: Combination polyether polyol formulations and reaction parameters of Example 3 and Comparative Example 1.

[0067]

[0068]

[0069] It can be seen from Table 1 above that the starting time of the combined polyether polyol according to the present invention after storage for 14 days is 2 seconds different from the starting time when it is stored for 1 day, which is almost within the allowable mea...

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Abstract

The present application relates to combined polyether polyols comprising active group-containing polyurethane catalysts and methods for their preparation. The present application also relates to polyurethane foams formed by reacting combined polyether polyols and isocyanates as described above. The combination polyether polyols described herein include reactive group polyurethane catalyst-containing polyether polyols as well as carboxylate catalyst-containing polyether polyols such that the combination polyether polyols are stable for long-term storage. After storage for 14 days, the change in the initial time and gel time of the combined polyether polyol measured according to the standard "HG / T 4574-2014 Determination of Foaming Reaction Characteristics of Polyurethane Raw Materials" is within the allowable error range.

Description

technical field [0001] The present application relates to the field of catalyst and polyurethane technology. In particular, the present application relates to combination polyether polyols including reactive group-containing polyurethane catalysts and methods for their preparation. The present application also relates to polyurethane foams formed by reacting combined polyether polyols and isocyanates as described above. Background technique [0002] Rigid polyurethane foams are prepared by reacting isocyanates with combined polyether polyols. In addition to polyether polyols, combination polyether polyols also contain other ingredients such as water, flame retardants, blowing agents, foam stabilizing surfactants and catalysts. To promote the reaction of isocyanate and polyol to form urethane, form carbon dioxide and urea-based compounds with water, and form isocyanurate (trimer) with excess isocyanate. The blowing agent in the combined polyether polyol is usually a liquid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/50C08G18/48C08G18/18C08J9/14C08G101/00
CPCC08G18/482C08G18/5027C08G18/4883C08G18/1875C08G18/1808C08G18/1825C08J9/144C08J2203/142
Inventor 傅东海
Owner 上海墨梵新材料科技有限公司
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