Composition for reacting with isocyanate

A technology of isocyanate and composition, which is applied in the field of production of rigid polyurethane foam composition, can solve the problems of high cost of rigid polyurethane foam, expensive foaming agent, difficulty in popularization, etc., to reduce foam density and enhance low-temperature dimensional stability Sexuality, the effect of reducing foam surface defects

Active Publication Date: 2019-08-27
HONGBAOLI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this blowing agent is expensive, and the rigid polyurethane foam prepared by using it alone as a blowing agent has a high cost and is difficult to popularize.
Moreover, if the foaming material contains a large amount of trans-1-chloro-3,3,3-trifluoropropene, it is easy to corrode the plastic liner material of the refrigerator, causing the liner to crack, swell, etc.

Method used

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  • Composition for reacting with isocyanate
  • Composition for reacting with isocyanate
  • Composition for reacting with isocyanate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] First component:

[0046] Complex polyol: hydroxyl value 370mgKOH / g, 100 parts, including:

[0047] (1) Polyether polyol A: Sorbitan polyether polyol, the hydroxyl value is 380-440mgKOH / g, the viscosity is 15000-30000mPa·s, 60 parts;

[0048] (2) Polyether polyol B: toluene diamine polyether polyol, the hydroxyl value is 340-400mgKOH / g, the viscosity is 10000-28000mPa·s, 25 parts;

[0049] (3) Polycarbonate polyol: the hydroxyl value is 220-250 mgKOH / g, the viscosity is 500-3500 mPa·s, 15 parts;

[0050] Amine catalyst: 2.8 parts, including 0.5 parts of pentamethyldiethylenetriamine, 1.5 parts of N,N-dimethylcyclohexylamine, and 0.8 parts of 2-hydroxypropyltrimethyloctanoic acid amine;

[0051] Silicone surfactant: 2.5 parts, including 1.5 parts of Niax L-6863, 1.0 parts of Niax L-6988;

[0052] Water: 2.0 parts;

[0053] Mixed blowing agent: 14 parts, including 7 parts of cyclopentane, 2 parts of trans-1-chloro-3,3,3-trifluoropropene, 2 parts of n-butane, and 3 par...

Embodiment 2

[0056] First component:

[0057] Complex polyol: hydroxyl value 430mgKOH / g, 100 parts, including:

[0058] (1) Polyether polyol A: sucrose polyether polyol, the hydroxyl value is 440-480 mgKOH / g, the viscosity is 20000-35000 mPa·s, 60 parts;

[0059] (2) Polyether polyol B: toluene diamine polyether polyol, the hydroxyl value is 340-400mgKOH / g, the viscosity is 10000-28000mPa·s, 30 parts;

[0060] (3) Modified phthalic anhydride polyester polyol: the hydroxyl value is 360-450 mgKOH / g, the viscosity is 800-5000 mPa·s, 10 parts;

[0061] Amine catalyst: 2.0 parts, including 0.4 parts of bis-(dimethylamino)ethyl ether, 1.6 parts of N,N-dimethylbenzylamine;

[0062] Silicon surfactant: AK-8860, 1.5 parts;

[0063] Water: 1.1 parts;

[0064] Mixed blowing agent: 19 parts, including 15 parts of cyclopentane, 3 parts of trans-1-chloro-3,3,3-trifluoropropene, 1 part of isobutane; second component: Suprasec 5005, 126 parts .

Embodiment 3

[0066] First component:

[0067] Complex polyol: hydroxyl value 410mgKOH / g, 100 parts, including:

[0068] (1) Polyether polyol: sucrose polyether polyol, the hydroxyl value is 400-450mgKOH / g, the viscosity is 18000-32000mPa·s, 85 parts;

[0069] (2) Modified phthalic anhydride polyester polyol: the hydroxyl value is 360-450mgKOH / g, the viscosity is 800-5000mPa·s, 15 parts;

[0070] Amine catalyst: 2.5 parts, including 0.5 parts of pentamethyldiethylenetriamine, 0.2 parts of triethylenediamine, 1.0 parts of N,N-dimethylcyclohexylamine, 2-hydroxypropyltrimethylammonium acetate 0.8 copies;

[0071] Silicon surfactant: 3.0 parts, including 1.5 parts of Niax L-6988, 0.5 parts of Niax L-6861, 1.0 parts of AK-8832;

[0072] Water: 2.5 parts;

[0073] Mixed blowing agent: 16 parts, including 7 parts of cyclopentane, 8 parts of trans-1-chloro-3,3,3-trifluoropropene, 1 part of n-butane; second component: 44V-10L, 144 share.

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Abstract

The invention discloses a composition for reacting with isocyanate. The composition is prepared from, by weight, 100 parts of pluronic polyols, 2.0-5.1 parts of an amine catalyst, 1.5-4.5 parts of a silicon surfactant, 1.1-2 .8 parts of water and 12-22 parts of a mixed foaming agent, wherein the pluronic polyols comprise 70-95 parts of a polyether polyol, 0-15 parts of a polyester polyol and 0-15parts of a polycarbonate polyol; the mixed foaming agent comprises 7-15 parts of cyclopentane, 2-10 parts of trans-1-chloro-3,3,3-trifluoropropene and 1-5 parts of butane. The composition has environmental friendliness and good fluidity, prepared foam has excellent comprehensive performance and a low heat conductivity coefficient, the perfusion quantity of raw materials can be effectively reduced,and the foam production cost is reduced.

Description

technical field [0001] The present invention relates to a composition for reaction with isocyanates to produce rigid polyurethane foams. Background technique [0002] Rigid polyurethane foam is made by polymerization of isocyanate reactants and isocyanate in the presence of catalysts and other additives. It has excellent heat insulation performance, sound insulation, insulation, light weight, high specific strength, and good processing performance. , is widely used as thermal insulation material. In order to achieve a better thermal insulation effect, a certain amount of physical foaming agent with low boiling point and low thermal conductivity needs to be added to the foam material. Unfortunately, the traditional polyurethane blowing agent monofluorotrichloromethane (CFC-11) can seriously damage the ozone layer. After the signing of the "Montreal Protocol" in 1987, countries have launched research on CFC-11 alternative blowing agents. After the signing of the "Kyoto Prot...

Claims

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Application Information

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IPC IPC(8): C08J9/14C08G18/40C08G18/42C08G18/44C08G18/48C08G18/50C08G101/00
CPCC08G18/4018C08G18/4208C08G18/44C08G18/48C08G18/4883C08G18/5027C08G2101/00C08J9/141C08J9/144C08J9/149C08J2375/04C08G2110/005
Inventor 邢益辉孔玉荣熊丽媛
Owner HONGBAOLI GRP CO LTD
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