Special polyurethane resin for soft basketball leather and preparation method of special polyurethane resin

A technology of polyurethane resin and basketball leather, which is applied in the direction of textiles and papermaking, etc. It can solve the problems of poor washing effect of resin, poor softness and comfort, dry surface feel, etc., and achieve soft and full hand feeling, soft hand feeling, excellent hydrolysis resistance performance effect

Inactive Publication Date: 2021-02-26
华大化学(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, basketball leather on the market generally requires the characteristics of high mechanical properties such as plump and comfortable feel, excellent rebound, wear resistance and scratch resistance. Excellent mechanical properties and resilience, but due to the slightly high modulus, the surface feels relatively dry, and the softness and comfort are relatively poor
[0003] At the same time, the existing basketball leather preparation process generally adopts a one-step large impregnation process, the thickness of the leather is thicker, and the filler is less. In general, the resin in the process of leather is generally poor in washing effect, and the thickness of the prepared leather is relatively thin. Generally, it affects the use effect. Therefore, we propose a special polyurethane resin for soft basketball leather and its preparation method to solve the above problems

Method used

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  • Special polyurethane resin for soft basketball leather and preparation method of special polyurethane resin
  • Special polyurethane resin for soft basketball leather and preparation method of special polyurethane resin
  • Special polyurethane resin for soft basketball leather and preparation method of special polyurethane resin

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Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1: According to Table 1, the present invention discloses a special polyurethane resin for soft basketball leather, which comprises the following components in parts by weight: 137 parts of PE-1, 57.1 parts of PTMG-4000, 34.26 parts of PCDL-2000, and 0.03 parts of phosphoric acid , 0.3 parts of antioxidant, 10.76 parts of EG, 350 parts of DMF, 59.8 parts of MDI, 0.2 parts of CATA, 249.75 parts of DMF, 100 parts of DMF (capped), 0.5 parts of CH3OH and 0.3 parts of malic acid.

[0027] A preparation method of special polyurethane resin for soft basketball leather, comprising the following steps:

[0028] S1. Put PE-1, PTMG-4000, PCDL-2000, antioxidant, phosphoric acid, EG and appropriate amount of DMF into a three-necked flask, stir evenly with a mechanical stirrer at high speed, then add MDI in batches, and control the temperature at 70-80°C reaction viscosity;

[0029] S2. According to the reaction speed of step S1, add CATA (catalyst) as appropriate, moderat...

Embodiment 2

[0033] Embodiment 2: According to Table 2, the present invention discloses a special polyurethane resin for soft basketball leather, which comprises the following components by weight: 137 parts of PE-1, 7.1 parts of PTMG-40005, 34.26 parts of PCDL-2000, and 0.03 parts of phosphoric acid , 0.3 parts of antioxidant, 180 parts of DMF, 12.31 parts of MDI, 200 parts of DMF, 10.76 parts of EG, 47.49 parts of MDI, 0.2 parts of CATA, 19.75 parts of DMF, 100 parts of DMF (capped), 0.5 parts of CH3OH and malic acid 0.3 parts.

[0034] A preparation method of special polyurethane resin for soft basketball leather, comprising the following steps:

[0035] S1. Put PE-1, PTMG-4000, PCDL-2000, antioxidant, phosphoric acid, and an appropriate amount of DMF into a three-necked flask, stir evenly with a mechanical stirrer at high speed, add prepolymerized MDI, and control the temperature at 70-75℃ for prepolymerization 2H;

[0036] S2. After the prepolymerization of the raw materials in step S...

Embodiment 3

[0042] Embodiment 3: According to Table 3, the present invention discloses a special polyurethane resin for soft basketball leather, which comprises the following components by weight: 123.25 parts of PE-1, 51.37 parts of PTMG-4000, 30.82 parts of PCDL-2000, and 0.03 parts of phosphoric acid , Antioxidant 0.3 parts, DMF180 parts, MDI 11.08 parts, DMF 200 parts, EG 9.68 parts, MDI 42.72 parts, CATA 0.2 parts, DMF219.75, DMF (capped) 100 parts, CH3OH 0.5 parts, malic acid 0.3 parts, HD-1 5 copies, HD-2 5 copies and HD-3 20 copies.

[0043] A preparation method of special polyurethane resin for soft basketball leather, comprising the following steps:

[0044] S1. Put PE-1, PTMG-4000, PCDL-2000, antioxidant, phosphoric acid, and an appropriate amount of DMF into a three-necked flask, stir evenly with a mechanical stirrer at high speed, then add prepolymerized MDI, and control the temperature at 70-75℃ for prepolymerization 2H;

[0045] S2. After the prepolymerization of step S1 ...

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Abstract

The invention discloses special polyurethane resin for soft basketball leather and a preparation method thereof, and relates to the technical field of chemical products and preparation methods thereof. The material is prepared from the following components in parts by weight: 5.37-5.98 parts of MDI, 70-100 parts of DMF, 12.33-13.70 parts of polyester polyol, 5.14-5.71 parts of polyether polyol, 3.01-3.42 parts of polycarbonate polyol, 0.77-1.08 parts of EG, 0.03-5 part of antioxidant, 0.003-3 part of phosphoric acid, 0.02-3 part of CATA, 0.03-5 part of malic acid, 0.05-7 part of CH3OH, 0.5-3 parts of HD-1, 0.5-5 parts of HD-2, and 2-4 parts of HD-3. According to the special polyurethane resin for the soft basketball leather and the preparation method of the special polyurethane resin, in the aspect of formula design, polyhydric alcohols are selected from high-molecular-weight polyester polyhydric alcohols and high-molecular-weight polyether polyhydric alcohols in a mixed mode, and dueto selection of the high-molecular-weight polyester polyhydric alcohols, a polyurethane soft segment is softer and softer and fuller in hand feeling; due to the introduction of the polyether polyol with large molecular weight, the hand feeling of the basketball leather is softer, and the leather is endowed with excellent surface wet and astringent touch feeling and better resilience.

Description

technical field [0001] The invention relates to the technical field of chemical products and preparation methods thereof, in particular to a special polyurethane resin for soft basketball leather and its preparation method and application. Background technique [0002] At present, basketball leather in the market generally requires the characteristics of high mechanical properties such as plump and comfortable feel, excellent rebound, wear resistance and scratch resistance. Currently, the resins used to prepare basketball leather are mainly concentrated in 30-50 modulus. Excellent mechanical properties and resilience, but due to the slightly high modulus, the surface feels relatively dry, and the softness and comfort are relatively poor. [0003] At the same time, the existing basketball leather preparation process generally adopts a one-step large impregnation process, the thickness of the leather is thicker, and the filler is less. In general, the resin in the process of l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/44C08G18/48C08G18/32D06N3/00D06N3/14
CPCC08G18/6607C08G18/4018C08G18/4238C08G18/44C08G18/4854C08G18/3206D06N3/146D06N3/0059
Inventor 张道东刘其春
Owner 华大化学(安徽)有限公司
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