Polyol composition for production of polyurethane resins, and polyurethane resin producing process using same

A technology of polyol composition and polyurethane resin, which is applied in the field of polyol (polyol) composition, can solve the problems of reduced combustion resistance and extremely reduced hardness of polyurethane foam, and achieves the effect of excellent flame retardancy

Inactive Publication Date: 2013-08-21
SANYO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when lowering the density using low-boiling-point hydrocarbons, lowering the hydroxyl value of the raw material polyol to lower the viscosity of the reaction mixture in order to improve handleability, depending on the manufacturing formula, the hardness of the polyurethane foam may be extremely extreme. Reduced, extremely reduced flame resistance (especially in the case of free-blown foams)

Method used

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  • Polyol composition for production of polyurethane resins, and polyurethane resin producing process using same
  • Polyol composition for production of polyurethane resins, and polyurethane resin producing process using same
  • Polyol composition for production of polyurethane resins, and polyurethane resin producing process using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0167] The present invention will be further described by the following examples, but the present invention is not limited to these examples.

[0168] The raw materials of the foamed polyurethane resin in the following Examples and Comparative Examples are as follows.

[0169] (1) Compounds with active hydrogen-containing groups and vinyl polymerizable functional groups

[0170] (A11-1) Ethylene containing glycerol PO adduct (number average molecular weight of 1500, hydroxyl value of 112.2) and acrylic acid with a hydroxyl value of 35 and a vinyl polymerizable functional group in the molecule of 1.2 mmol / g Active hydrogen compounds based on polymerizable functional groups

[0171] (A11-2) Ethylene containing pentaerythritol PO adduct (number-average molecular weight of 1000, hydroxyl value of 224.4) and acrylic acid, which has a hydroxyl value of 48 and a vinyl polymerizable functional group in the molecule of 2.6 mmol / g Active hydrogen compounds based on polymerizable functional gro...

manufacture example 1

[0202] Production Example 1 [Production of Strength Improver (a2-1)]

[0203] Put 1 mole of glycerin PO adduct (number average molecular weight of 1700, hydroxyl value of 99.0), 6 moles of phthalic anhydride, and alkali catalyst (N-ethyl) into a stainless steel autoclave equipped with a stirring device and a temperature control device. Morpholine) 0.020 mol, reacted for 1 hour at 0.20 MPa and 120±10°C in a nitrogen atmosphere for half-esterification. Then, while controlling the conditions at 120±10°C and the pressure at 0.50 MPa or less, 6 mol of EO was added dropwise over 5 hours, and then aged at 120±10°C for 1 hour. After the maturation, the alkali catalyst was removed under reduced pressure at 10 KPa for 1 hour to obtain a strength improver (a2-1). The values ​​of (a2-1) are as follows. Hydroxyl value (mgKOH / g) = 59.0, aromatic ring concentration (mmol / g) = 2.1.

manufacture example 2

[0204] Production Example 2 [Production of Strength Improver (a2-2)]

[0205] Into the same autoclave as in Production Example 1, 1 mol of glycerin PO adduct (number average molecular weight of 3000, hydroxyl value of 56.1), 3 mol of phthalic anhydride, and base catalyst (N-ethylmorpholine) 0.020 were charged Mol, the reaction was carried out at 0.20 MPa and 120±10°C for 1 hour in a nitrogen atmosphere for half-esterification. Then, while controlling the conditions at 120±10°C and the pressure at 0.50 MPa or less, 3 mol of EO was added dropwise over 5 hours, and then aged at 120±10°C for 1 hour. After the maturation, the alkali catalyst was removed under reduced pressure at 10 KPa for 1 hour to obtain a strength improver (a2-2). The values ​​of (a2-2) are as follows. Hydroxyl value (mgKOH / g) = 47.1, aromatic ring concentration (mmol / g) = 0.8.

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Abstract

Provided is a polyol composition for the production of polyurethane resins that enables the production of a polyurethane foam which, even when the foam has a reduced density, exhibits excellent mechanical properties such as hardness and excellent flame resistance (flame retardance). The present invention is a polyol composition (A) for the production of polyurethane resins which comprises a compound (a1) having a vinyl-polymerizable functional group represented by general formula (I) and a strength improver (a2) represented by general formula (II). In general formula (I), R is hydrogen, C1-15 alkyl, or C6-21 aryl. In general formula (II), R1 is a residue derived from an active-hydrogen-containing compound by removing one active hydrogen atom; Y is a residue derived from an at least divalent aromatic polycarboxylic acid (f) by removing the carboxyl groups; a is an integer satisfying the relationship: 1 <= a <= (the number of substituents on the aromatic ring - 1); Z is a residue derived from an at least m-valent active-hydrogen-containing compound by removing the m active hydrogen atoms; and m is an integer of 1 to 10.

Description

Technical field [0001] The present invention relates to a polyol composition for producing a polyurethane resin and a method for producing a polyurethane resin using the composition. Background technique [0002] As the blowing agent used in the manufacture of rigid polyurethane foams, chlorofluorocarbons have been used in the past. However, as shown in the "Kyoto Protocol" etc., the conventional chlorofluorocarbons have been restricted. In order to cope with this situation , Hydrofluorocarbons, low boiling point hydrocarbons, etc. are being used as blowing agents. However, hydrofluorocarbons have also shown a tendency to be autonomously restricted, and the use of low-boiling hydrocarbons as blowing agents is increasing. [0003] In addition, it is also studied to add flame retardants to achieve flame retardancy of polyurethane resin molded products (for example, refer to Non-Patent Document 1). [0004] On the other hand, in recent years, for the purpose of reducing costs, the amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/65
CPCC08G18/4829C08G18/4887C08G18/5033C08G18/632C08G18/637C08G18/638C08G18/6674C08G18/7607C08J9/141C08G18/3221C08G18/4018C08G18/4072C08G2350/00C08J9/149C08J2375/04C08F283/008C08G2110/005C08G2110/0008C08L75/06
Inventor 内田胜也加峰兴滋佐佐木庆平野智寿
Owner SANYO CHEM IND LTD
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