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Wet impregnated polyurethane resin for high hydrolysis resistance synthetic leather and preparation thereof

A technology of polyurethane resin and hydrolysis resistance, which is applied in the field of polyurethane resin manufacturing to achieve the effect of improving the bonding fastness and enhancing the impregnation content

Active Publication Date: 2009-07-15
HEFEI ANLI POLYURETHANE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of impregnated polyurethane resin for wet-type high hydrolysis-resistant synthetic leather, to solve the opposite problem between the hydrolysis resistance performance, impregnated amount and film-forming property of existing wet-type high hydrolysis-resistant synthetic leather impregnated polyurethane resin. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Raw material name Weight (unit: Kg)

[0030] Polyester polyol compound 840

[0031] Polyether polyol compound 680

[0032] Ethylene glycol 70

[0033] 4,4-Diphenylmethane diisocyanate 377

[0034] Phosphoric acid 0.6

[0035] Antioxidant I-1010 0.5

[0036] Hydrolysis resistance additive (fluorine surface modifier) ​​20

[0037] N,N-Dimethylformamide 3800

[0038] The wet-type high hydrolysis-resistant synthetic leather of the present invention is prepared according to the following steps for impregnating polyurethane resin:

[0039] 1. Put various polyol compounds and antioxidant I-1010 into the reaction kettle for stirring, heat up to 60-100°C, vacuum dry and remove water for 1 hour, check that the moisture content is less than 0.03%, then cool down to 30°C.

[0040] 2. Add N,N-dimethylformamide, stir for 10 minutes, add phosphoric acid and ethylene glycol, stir for 20 minutes, and control the temperature of the kettle at 35-65°C.

[0041] 3. Add 4,4-diphenylm...

Embodiment 2

[0044] Raw material name Weight (unit: Kg)

[0045] Polyester polyol compound 800

[0046] Polycarbonate polyol compound 720

[0047] Ethylene glycol 70

[0048] 4,4-Diphenylmethane diisocyanate 377

[0049] Phosphoric acid 0.6

[0050] Antioxidant I-1010 0.5

[0051] Hydrolysis resistance additive (fluorine surface modifier) ​​20

[0052] leveling agent 1

[0053] N,N-Dimethylformamide 3800

[0054] The wet-type high hydrolysis-resistant synthetic leather of the present invention is prepared according to the following steps for impregnating polyurethane resin:

[0055]1. Put various polyol compounds and antioxidant I-1010 into the reaction kettle for stirring, heat up to 100°C, vacuum dry and remove water for 1 hour, check that the moisture content is less than 0.03%, then cool down to 30°C.

[0056] 2. Add N,N-dimethylformamide, stir for 10 minutes, add phosphoric acid and ethylene glycol, stir for 20 minutes, and control the temperature of the kettle at 35-65°C.

...

Embodiment 3

[0060] Raw material name Weight (unit: Kg)

[0061] Polyester polyol compound 700

[0062] Polyether polyol compound 700

[0063] Polycarbonate polyol compound 120

[0064] Ethylene glycol 70

[0065] 4,4-Diphenylmethane diisocyanate 377

[0066] Phosphoric acid 0.6

[0067] Antioxidant I-1010 0.5

[0068] Hydrolysis resistance additive (fluorine surface modifier) ​​20

[0069] N,N-Dimethylformamide 2100

[0070] The wet-type high hydrolysis-resistant synthetic leather of the present invention is prepared according to the following steps for impregnating polyurethane resin:

[0071] 1. Put various polyol compounds and antioxidant I-1010 into the kettle for stirring, heat up to 100°C, vacuum dry and remove water for 1 hour, check that the moisture content is less than 0.03%, then cool down to 30°C.

[0072] 2. Add N,N-dimethylformamide, stir for 10 minutes, add phosphoric acid and ethylene glycol, stir for 20 minutes, and control the temperature of the kettle at 35-65°C...

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PUM

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Abstract

The invention discloses a wet impregnated urethane resin for high-hydrolysis-resistance synthetic leather and a method for preparing the same. The raw materials of the urethane resin comprise isocyanate, polyether and polyester dibastic alcohol compound having a molecular weight 3000-5000g / mol, dibastic alcohol chain extender having a molecular weight 60-150g / mol, catalyst, auxiliary agent and solvent. The wet impregnated urethane resin for the high-hydrolysis-resistance synthetic leather completely overcomes the defects such as poor film forming performance, slow impregnation speed, and small impregnation amount, which exist in the prior wet impregnated urethane resin for the prior high-hydrolysis-resistance synthetic leather. Besides, the hydrolysis resistance of the wet impregnated urethane resin also meets the demands of the hydrolysis-resistance synthetic leather.

Description

technical field [0001] The invention relates to a method for producing polyurethane resin, in particular to a method for synthesizing impregnated polyurethane resin for single-component wet synthetic leather. Background technique [0002] At present, the application of synthetic leather in shoe leather, bag leather and garment leather has become more and more extensive, and its performance and fashion changes have also surpassed genuine leather. Moreover, the natural resources of genuine leather products are limited and the price is high, which cannot meet the growing market demand. Therefore, polyurethane synthetic leather has been widely used in many aspects, especially high physical property polyurethane synthetic leather. At the same time, this has higher and higher requirements for polyurethane resins for synthetic leather. The impregnation process of synthetic leather can make the back of the cloth base have the effect of imitation leather, so the impregnation proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/32C08G18/76
Inventor 武春余张玉萍
Owner HEFEI ANLI POLYURETHANE NEW MATERIAL