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Easily-dyed aliphatic polyurethane resin and preparation method thereof

An aliphatic polyurethane, easy-dyeing technology, applied in the field of polyurethane resin, can solve the problems of poor level dyeing, color fastness, and difficult dyeing, and achieve the effect of improved dyeing performance, good level dyeing, and easy dyeing

Active Publication Date: 2012-07-04
SHANGHAI HUIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to provide a kind of easily dyeable aliphatic polyurethane resin, has overcome the defect that existing polyurethane resin is relatively difficult to dye, level dyeing and color fastness are poor

Method used

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  • Easily-dyed aliphatic polyurethane resin and preparation method thereof
  • Easily-dyed aliphatic polyurethane resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Raw material ratio

[0041] Number-average molecular weight is 8.25g of polytetramethylene glycol adipate copolyester diol (BA2000) of 2000,

[0042] Number average molecular weight is 8.25g of polycarbonate diol (PCD2000) of 2000,

[0043] Number average molecular weight is 82.5g of polytetrahydrofuran ether glycol (PTMEG2000) of 2000,

[0044] Number average molecular weight is 57.75g of polyethylene glycol (PEG2000) of 2000,

[0045] Number average molecular weight is 8.25g of polypropylene glycol (PPG2000) of 2000,

[0046] 1,4-butanediol (BG) 5.35g,

[0047] Isophorone diisocyanate (IPDI) 64.6g,

[0048] Isophoronediamine (IPDA) 25.33g,

[0049] Toluene (TOL) 392g,

[0050] Isobutanol (IBA) 392g.

[0051] 2. Preparation method

[0052] (1) Pre-polymerization: Put 8.25g of BA2000, 8.25g of PCD2000, 82.5g of PTMEG2000, 57.75g of PEG2000, 8.25g of PPG2000, 5.35g of BG and 55.1g of IPDI into the reactor at 90℃~110℃ for 4~5 hours ;

[0053](2) Add the remai...

Embodiment 2

[0056] 1. Raw material ratio

[0057] Number-average molecular weight is 8.25g of polytetramethylene glycol adipate copolyester diol (BA2000) of 2000,

[0058] Number average molecular weight is 8.25g of polycarbonate diol (PCD2000) of 2000,

[0059] Number average molecular weight is 82.5g of polytetrahydrofuran ether glycol (PTMEG2000) of 2000,

[0060] Number average molecular weight is 57.75g of polyethylene glycol (PEG2000) of 2000,

[0061] 8.25g of polypropylene glycol (PPG2000) with a molecular weight of 2000,

[0062] 1,4-butanediol (BG) 4.8g,

[0063] Isophorone diisocyanate (IPDI) 64.6g,

[0064] Isophoronediamine (IPDA) 25.33g,

[0065] Toluene (TOL) 392g,

[0066] Isobutanol (IBA) 392g.

[0067] 2. Preparation method

[0068] (1) Pre-polymerization: put BA20008.25g, PCD20008.25g, PTMEG200082.5g, PEG200057.75g, PPG20008.25g, BG 4.8g, MDEA0.367g, IPDI 58.3g and TOL 25g into the reactor, at 110℃~ 120°C, react for 3 to 4 hours;

[0069] (2) Add the remaining...

Embodiment 3

[0072] 1. Raw material ratio

[0073] Number-average molecular weight is 8.5g of polytetramethylene glycol adipate copolyester diol (BA2000) of 2000,

[0074] The number average molecular weight is 2000 polycarbonate diol PCD20008.5g,

[0075] Number average molecular weight is 85g of polytetrahydrofuran ether glycol (PTMEG2000) of 2000,

[0076] Number average molecular weight is 59.5g of polyethylene glycol (PEG2000) of 2000,

[0077] The number average molecular weight is 8.5g of polypropylene glycol (PPG2000) of 2000,

[0078] Ethylene glycol (EG) 3.33g,

[0079] N-methylethylene glycol amine (MDEA) 0.37g,

[0080] Isophorone diisocyanate (IPDI) 65.87g,

[0081] Isophoronediamine (IPDA) 25.83g,

[0082] Toluene (TOL) 400g,

[0083] Isobutanol (IBA) 400 g.

[0084] 2. Preparation method

[0085] (1) Pre-polymerization: put BA20008.5g, PCD20008.5g, PTMEG200085g, PEG200059.5g, PPG20008.5g, EG 3.33g, MDEA0.37g, IPDI 56.23g and TOL 12g into the reactor, at 95℃~105℃ Ne...

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Abstract

The invention relates to easily-dyed aliphatic polyurethane resin, comprising the following components in percent by weight: 0.5%-1.5% of polyester polyol, 0.5%-1.5% of polycarbonate diol, 5%-7% of mixed polyether polyol, 0.2%-0.6% of chain extender, 6%-7% of isophorone diisocyanate, 2%-3% of isophorone diamine and 75%-80% of solvent. A preparation method comprises the following steps of: firstlyleading the polyester polyol, the polycarbonate diol, the mixed polyether polyol, the chain extender, the isophorone diisocyanate, the isophorone diamine and methylbenzene to react for 3-5 hours at the temperature 90-120 DEG C; and then adding isobutyl alcohol solution of the isophorone diamine, adding the solvent after a reaction system becomes viscous, leading the final viscosity of a product to be 30-50Pa s under the temperature of 25 DEG C, and ending the reaction.

Description

technical field [0001] The invention relates to a polyurethane resin, in particular to an easy-to-dye aliphatic polyurethane resin and a preparation method thereof. Background technique [0002] In the field of PU synthetic leather, the dry synthetic leather process can be used alone or in combination with wet synthetic leather through direct coating, release paper transfer and surface treatment, which can usually produce many technical effects, such as variety, bright and bright Excellent appearance color, rich and full texture effect, special surface touch and enhanced physical properties of the product, etc. [0003] At present, the colors of textiles and synthetic leather products of various colors in the market are basically realized by using dyes and pigments. The traditional use of dyes is to dye textiles, while the traditional use of pigments is to color non-textiles (such as PU resins, inks, paints, coatings, plastics, rubber, etc.). The pigment mainly acts on the...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/44C08G18/48C08G18/32C08G18/12D06N3/14D06P3/00D06P1/39
Inventor 钱建中钱洪祥郭海英邹佳娜范汉清邹文革
Owner SHANGHAI HUIDE TECH CO LTD
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