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Polyol for polyurethane preparation and polyurethane preparation method using same

A technology of polyol and polyurethane, which is applied in the field of polyol, can solve the problems of decreased foam hardness, insufficient mechanical properties such as elongation and tensile strength of soft polyurethane foam, and achieves improved mechanical properties and good hardness of polyurethane Effect

Inactive Publication Date: 2013-01-02
SANYO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But on the other hand, if the density of the foam decreases, the hardness of the foam decreases
As a specific technique for increasing the hardness of the flexible polyurethane foam, there is a method of increasing the amount of the crosslinking agent used (Non-Patent Document 1), etc., but this method leaves the elongation and Due to problems such as insufficient mechanical properties such as tensile strength, a flexible polyurethane foam with improved hardness and mechanical properties is expected

Method used

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  • Polyol for polyurethane preparation and polyurethane preparation method using same
  • Polyol for polyurethane preparation and polyurethane preparation method using same
  • Polyol for polyurethane preparation and polyurethane preparation method using same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0203] Production example 1 [production of polyol a-1]

[0204] like figure 1As shown, using circulation lines (6), (7), and (8), a stainless steel autoclave with a capacity of 2500 ml, equipped with a stirring device, a temperature control device, and a raw material supply line (5) as a reaction tank (1) and Reaction tower (2) filled with 400 parts of magnesium oxide (particles, 2-0.1 mm in diameter) (using two stainless steel cylindrical tubes with an inner diameter of 5.5 cm and a length of 30 cm) and distillation tower (3) (theoretical tower The number of plates is 30 sections, and the stainless steel cylindrical tube with an inner diameter of 5.5cm and a length of 2m) is connected.

[0205] After putting 400 g of PO adduct (hydroxyl value 280) of glycerol and 0.09 g of tris(pentafluorophenyl) borane into the reaction tank (1), the autoclave {reaction tank (1)} and the reaction tower ( 2) and circulation pipelines (6), (7), (8) depressurize to 0.005MPa. While controllin...

manufacture example 2

[0207] Production example 2 [production of polyol a-2]

[0208] like figure 2 As shown, using circulation lines (6) and (8), a stainless steel autoclave with a capacity of 2500 ml, a stirring device, a temperature control device, and a raw material supply line (5) as a reaction tank (1) and a distillation column (3 ) (theoretical plate number is 50 sections, stainless steel cylindrical tube, inner diameter is 5.5cm, length is 3m) connection.

[0209] After putting 400 g of PO adduct (hydroxyl value 280) of glycerol and 0.09 g of tris(pentafluorophenyl) borane into the reaction tank (1), the autoclave {reaction tank (1)} and the reaction tower ( 2) and circulation pipelines (6), (8) depressurize to 0.005MPa. While controlling the reaction temperature to keep it at 50-60°C, continuously inject PO into the liquid phase through the raw material supply pipeline (5), and use a diaphragm pump to make the gas phase in the reaction tank (1) flow at a flow rate of 5L / min. Circulate ...

manufacture example 3

[0211] Production example 3 [production of polyol a-3]

[0212] like image 3 As shown, using the circulation lines (6) and (8), a 2500ml stainless steel autoclave with a stirring device, a temperature control device, and a raw material supply line (5) as a reaction tank (1) was filled with 500 parts of molecular sieves The adsorption tower (9) of 4A (stainless steel cylindrical pipe, internal diameter is 5.5cm, and length is 30cm) is connected.

[0213] After putting in 400g of PO adduct (hydroxyl value 280) of glycerol and 0.09g of tris(pentafluorophenyl)borane, connect the autoclave {reaction tank (1)} with the adsorption tower (9) and pipeline (6) , (8) The internal pressure is reduced to 0.005MPa. While controlling the reaction temperature to keep it at 50-60°C, continuously feed PO through the raw material supply pipeline (5), and use a diaphragm pump to make the gas phase in the reaction tank (1) flow in the reaction tank (1) at a flow rate of 5 L / min. )→Decompressio...

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Abstract

In order to provide a polyol that resolves such issues as insufficient mechanical properties and moisture resistance in urethane elastomers and polyurethane foams produced using prior polyols, a polyol (PL) for polyurethane preparation is disclosed that comprises the following polyol (a) and the following strength-enhancing agent (b). Polyol (a): a polyoxyalkylene polyol that is the alkylene oxide adduct of an active hydrogen-containing compound (H), in which at least 40% of a hydroxyl group positioned on the terminal is a primary hydroxyl group-containing group represented by general formula (I). [In general formula (I), R1 represents a hydrogen atom or a C1-12 alkyl group, cycloalkyl group, or phenyl group.] Strength-enhancing agent (b): a compound that is at least one compound selected from the group comprising an ester compound, a thioester compound, a phosphoric acid ester compound, and an amide compound, and that is derived from a polyvalent aromatic carboxylic acid with a valence of 2 or higher.

Description

technical field [0001] The present invention relates to a polyol which is suitable as a raw material of polyurethane such as polyurethane foam and polyurethane elastomer, and which imparts excellent mechanical properties to polyurethane. Background technique [0002] There is known a specific polyhydric alcohol in which the average number of moles of ethylene oxide added per unit active hydrogen and the primary OH conversion ratio of terminal hydroxyl groups satisfy a specific relationship. It is known that when producing a polyurethane foam, a flexible polyurethane foam having good vibration characteristics can be produced by including the specific polyol in the polyol component (Patent Document 1). [0003] On the other hand, in recent years, there has been a strong demand for cost reduction, and the density of flexible polyurethane foams has been required to be reduced in order to achieve weight reduction. For example, in vehicular applications, the density of flexible u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/42
CPCC08G2101/0008C08G18/6674C08G18/4804C08G18/4252C08G2101/005C08G18/632C08G18/4018C08G2101/0083C08G18/4072C08G2110/0008C08G2110/005C08G2110/0083C08G18/4211C08G18/4845
Inventor 平野智寿加峰兴滋新井泉
Owner SANYO CHEM IND LTD
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