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Poly(carbonate-ether) polyurethane resin and preparation method thereof and leather pulp

A technology of polyurethane resin and polyurethane leather is applied in the fields of poly-polyurethane resin and its preparation method and leather pulp, which can solve the problems of hazards, dependence on catalysts, etc., and achieve simple production process, excellent tensile strength and elongation at break, The effect of high elongation at break

Active Publication Date: 2016-07-06
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem that the raw material for preparing polyurethane leather slurry in the prior art relies on petrochemical products and the catalyst used has potential hazards, and provides a kind of poly(carbonate-ether) type polyurethane resin and its preparation method and leather paste

Method used

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  • Poly(carbonate-ether) polyurethane resin and preparation method thereof and leather pulp
  • Poly(carbonate-ether) polyurethane resin and preparation method thereof and leather pulp
  • Poly(carbonate-ether) polyurethane resin and preparation method thereof and leather pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The preparation of poly(carbonate-ether) type polyurethane resin (m=10, n=5):

[0050] Add 60g of poly(carbonate-ether) glycol (number-average molecular weight 1500) in the there-necked flask, heat up to 110°C, decompress for 1h; under nitrogen protection, cool down to 65°C, add 8.5g of butanediol, divide Add 168g of dimethylformamide, 0.032g of BiCAT4130 catalyst and 32.4g of dicyclohexylmethane diisocyanate in three batches. After each batch is added, react for 1h. After the three batches of reaction are completed, heat up to 80°C and continue to Add 3.6 g of trimethylolpropane into the three-necked flask, stir and react for 1 h, add 0.3 g of methanol, and continue the reaction for 0.5 h to obtain poly(carbonate-ether) polyurethane resin.

[0051] figure 1 For the proton nuclear magnetic resonance spectrum (CDCl) of the poly(carbonate-ether) type polyurethane resin prepared in embodiment 1 3 ), as can be seen from the figure, HNMR (CDCl 3 ):1.14ppm, 1.34ppm, 1.51pp...

Embodiment 2

[0053] The preparation of poly(carbonate-ether) type polyurethane resin (m=43, n=9):

[0054] Add 105g of poly(carbonate-ether) glycol (number average molecular weight 5000) into the there-necked flask, heat up to 110°C, decompress for 1.5h; under nitrogen protection, cool down to 70°C, add 14.6g of ethylene glycol Molecular chain extender, add 235g of dimethylformamide, 0.076g of BiCAT4130 catalyst and 52.8g of 2,4-toluene diisocyanate in three batches, after each batch is added, react for 2h, after three batches of reaction, Raise the temperature to 85°C, continue to add 5.3g of trimethylolpropane into the three-necked flask, stir for 3 hours, add 0.8g of methanol, and continue to react for 2 hours to obtain a poly(carbonate-ether) polyurethane resin.

[0055] The proton nuclear magnetic resonance spectrum of the poly(carbonate-ether) polyurethane resin that embodiment 2 prepares, HNMR (CDCl 3 ):1.16ppm, 1.38ppm, 1.54ppm, 1.67ppm, 2.01ppm, 2.20ppm, 2.31ppm, 2.42ppm, 2.93ppm...

Embodiment 3

[0057] The preparation of poly(carbonate-ether) type polyurethane resin (m=6, n=21):

[0058] Add 76g of poly(carbonate-ether) glycol (number-average molecular weight 2000) into the three-necked flask, raise the temperature to 110°C, and depressurize for 1h; under nitrogen protection, cool down to 68°C, add 9.7g of diethylene glycol Diol small molecule chain extender, add 186g of dimethylformamide, 0.046g of BiCAT4130 catalyst and 39.8g of isophorone diisocyanate in three batches, after each batch is added, react for 1.5h, three batches of reaction After completion, the temperature was raised to 82° C., and 4.1 g of trimethylolpropane was continuously added into the three-necked flask, stirred for 2 h, 0.5 g of methanol was added, and the reaction was continued for 1 h to obtain a poly(carbonate-ether) polyurethane resin.

[0059] The proton nuclear magnetic resonance spectrum of the poly(carbonate-ether) polyurethane resin that embodiment 3 prepares, HNMR (CDCl 3 ):1.10ppm, ...

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Abstract

The invention discloses a poly(carbonic ester-ether) type polyurethane resin and a preparation method thereof and leather pulp, belonging to the technical field of leather pulp. The technical problems that raw materials for preparation of polyurethane leather pulp depend on petrochemical products and a catalyst used in the preparation has potential hazards in the prior art are overcome in the invention. The leather pulp provided by the invention comprises, by weight, 85 to 120 parts of the poly(carbonic ester-ether) type polyurethane resin, 0.26 to 0.98 part of a surfactant, 0.42 to 1.3 parts of an antifoaming agent, 0.13 to 0.27 part of a leveling agent and 128 to 200 parts of dimethyl formamide, wherein the structural formula of the poly(carbonic ester-ether) type polyurethane resin is shown in a formula I as described in the specification. The leather pulp does not depend on petroleum resources, is safe and environment-friendly, has excellent tensile strength and elongation at break and does not undergo yellowing under long-term irradiation of ultraviolet rays, wherein tensile strength is as high as 60 MPa and elongation at break is as high as 1200%.

Description

technical field [0001] The invention belongs to the technical field of leather slurry, and in particular relates to a poly(carbonate-ether) polyurethane resin, a preparation method thereof, and leather slurry. Background technique [0002] Polyurethane leather size is mainly used to produce various types of synthetic leather. The synthetic leather produced by it has excellent physical properties, and its strength, wear resistance, folding resistance, elongation at break and other indicators are even better than genuine leather, so it has been widely used in shoe leather, sofa leather, decorative leather and automobile leather. has been widely used. [0003] The production method of polyurethane leather slurry is to use polyisocyanate and polyol as raw materials, use dimethylformamide (DMF) as solvent, and react with organic tin, organic lead, organic mercury or tertiary amine as catalyst at a certain temperature And made. For example, patent CN101914285A discloses a polyu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/44C08L75/06C08L75/08D06N3/14
CPCC08G18/12C08G18/222C08G18/44C08G18/48C08G18/6677D06N3/146D06N2203/068D06N2205/02D06N2209/1678C08G18/3206
Inventor 张红明赵强王献红李季王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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