Polyurethane foam stabilizer with good nucleating property and preparation method thereof

A technology of polyurethane foam and stabilizer, applied in the field of polyurethane foam stabilizer and its preparation, to achieve the effect of reducing surface tension and reducing surface tension

Active Publication Date: 2012-06-20
南京美思德新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, allyl polyether is generally grafted onto hydrogen-containing silicone oil to make a polyether-type silicone surfactant, and its foam stability needs to be further improved.

Method used

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  • Polyurethane foam stabilizer with good nucleating property and preparation method thereof
  • Polyurethane foam stabilizer with good nucleating property and preparation method thereof
  • Polyurethane foam stabilizer with good nucleating property and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A) Add 6.0g of allyl alcohol, 120g of ethylene oxide and 95g of propylene oxide into the reactor, and react for 5 hours under the conditions of 0.9gKOH catalyst, pressure ≤ 0.4MPa, and reaction temperature of 110°C to obtain terminal alkenes Propyl polyether (I);

[0028] B) React octamethylcyclotetrasiloxane, hydrogen-containing silicone oil and hexamethyldisiloxane under the action of sulfuric acid at 80°C for 5 hours to obtain polysiloxane (II), in which octamethylcyclotetrasiloxane The molar ratio between oxane, hydrogen-containing silicone oil (hydrogen content 1.60%) and hexamethyldisiloxane is 10:0.11:1;

[0029] C) 200g of terminal allyl polyether (I), 80g of polysiloxane (II), and 2.8g of allyl glycidyl ether obtained by the above two-step reaction are added to the reactor, and 30ppmPt catalyst and 100g toluene solvent are used Press down and heat up to 60-120°C to react for 8 hours. While heating and reacting, turn on the cooling water of the reflux condenser...

Embodiment 2

[0034] A) Add 5.8g of allyl alcohol, 130g of ethylene oxide and 105g of propylene oxide into the reactor, and react for 5.5 hours under the conditions of 1.07gKOH catalyst, pressure ≤ 0.4MPa, and reaction temperature of 120°C to obtain terminal olefin Propyl polyether (I);

[0035] B) React octamethylcyclotetrasiloxane, hydrogen-containing silicone oil and hexamethyldisiloxane under the action of sulfuric acid at 80°C for 5 hours to obtain polysiloxane (II), in which octamethylcyclotetrasiloxane The molar ratio between oxane, hydrogen-containing silicone oil (1.60% hydrogen content) and hexamethyldisiloxane is 17:0.2:1.5;

[0036] C) 210g of terminal allyl polyether (I), 70g of polysiloxane (II) and 2.6g of allyl glycidyl ether obtained by the above two-step reaction are added to the reactor, and the 30ppmPt catalyst and 100g toluene solvent are used in the normal Press down and heat up to 60-120°C to react for 8 hours. While heating and reacting, turn on the cooling water of t...

Embodiment 3

[0041] A) Add 6.0g of allyl alcohol, 120g of ethylene oxide and 95g of propylene oxide into the reactor, and react for 5 hours under the conditions of 0.9gKOH catalyst, pressure ≤ 0.4MPa, and reaction temperature of 110°C to obtain terminal alkenes Propyl polyether (I);

[0042] B) React octamethylcyclotetrasiloxane, hydrogen-containing silicone oil and hexamethyldisiloxane under the action of sulfuric acid at 80°C for 5 hours to obtain polysiloxane (II), in which octamethylcyclotetrasiloxane The molar ratio between oxane, hydrogen-containing silicone oil (hydrogen content 1.60%) and hexamethyldisiloxane is 10:0.11:1;

[0043] C) 200g of terminal allyl polyether (I), 80g of polysiloxane (II), and 2.8g of allyl glycidyl ether obtained by the above two-step reaction are added to the reactor, and 30ppmPt catalyst and 100g toluene solvent are used Press down and heat up to 60-120°C to react for 8 hours. While heating and reacting, turn on the cooling water of the reflux condenser...

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Abstract

The invention discloses a polyurethane foam stabilizer with good nucleating property, which can effectively reduce the surface expansion of a foaming system. The organic foam stabilizer has the following structure: the value of a is 1-10, the value of b is 5-85, the value of c is 1-4, the value of x is 8-70, the value of y is 0-30, a+b+c is 7-99, and x+y is 8-100; R1 is alkane, aromatic groups, acyloxy or hydrogen atoms with the carbon atom number being 1-4; and R2 has a structure.

Description

technical field [0001] The invention relates to a polyurethane foam stabilizer and a preparation method thereof, in particular to a polyurethane foam stabilizer with good nucleation performance and a preparation method thereof. The stabilizer can be used in a rigid polyurethane foam foaming process. Background technique [0002] Polyurethane foam is an important synthetic material, which has the characteristics of porosity, low relative density and high specific strength. According to the different raw materials used and the change of formula, it can be made into ordinary soft foam, high resilience foam and hard foam. Polyurethane foam is a chemical reaction of various raw materials (such as isocyanate, polyol, water or blowing agent) in a very short time (generally no more than 1 minute), and changes from liquid to colloid and then to polymer , undergoing complex processes such as foaming and gelation. Therefore, it is necessary to rely on the foam stabilizer to play a reg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/388C08J9/00C08L75/04
Inventor 罗振扬孙宇
Owner 南京美思德新材料有限公司
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