Crystal oil slippery resin used for synthetic leather and preparation method thereof
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A technology for synthetic leather and crystal, applied in the field of high-gloss polyurethane varnish and its preparation, can solve the problems of poor temperature resistance, easy stickiness of varnish resin, etc., to overcome easy stickiness, easy yellowing, and anti-aging poor performance
Inactive Publication Date: 2012-07-25
建德市顺发化工助剂有限公司
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[0006] The purpose of the present invention is to solve the problems of easy stickiness and poor temperature resistance of the varnish resin in the above technology, and to provide a crystal oil slippery resin for synthetic leather with simple proportioning, convenient production and low cost and its preparation method
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Embodiment 1
[0020] Embodiment 1: The specific formula is: 41 parts of dimethylformamide, 10 parts of polyether polyol, 5 parts of polyester polyol, 13 parts of diphenylmethane diisocyanate, 0.89 part of 1,4-butanediol, ethyl alcohol 4 parts of glycol, 11.5 parts of toluene, 11.5 parts of ethyl acetate, 3.1 parts of emulsified silicone oil, and 0.01 part of phosphite antioxidant.
Embodiment 2
[0021] Embodiment 2: The specific formula is 41 parts of dimethylformamide, 9 parts of polyether polyols, 6 parts of polyester polyols, 13 parts of diphenylmethane diisocyanate, 0.89 parts of 1,4-butanediol, ethylene glycol 4.0 parts of alcohol, 11.5 parts of toluene, 11.5 parts of ethyl acetate, 3.1 parts of emulsified silicone oil, and 0.01 part of phosphite antioxidant.
Embodiment 3
[0022] Example 3: The specific formula is 40.8 parts of dimethylformamide, 10 parts of polyether polyol, 5.0 parts of polyester polyol, 13 parts of diphenylmethane diisocyanate, 1.5 parts of 1,4-butanediol, ethylene glycol 3.59 parts of alcohol, 11.5 parts of toluene, 11.5 parts of ethyl acetate, 3.1 parts of emulsified silicone oil, and 0.01 part of phosphite antioxidant.
[0023] Such as figure 1 As shown, the preparation method of this crystal oil slippery resin for synthetic leather described in the present invention is first formed by addition polymerization of polyether polyol, polyester polyol, diphenylmethane diisocyanate and antioxidant. The prepolymer is reacted at 60°C for one hour; and then undergoes a chain extension reaction to form a polymer with a relatively high molecular weight. The prepolymer can be prepared by chain extension reactions of diols and polyols Higher quality resin with excellent performance.
[0024] During this addition polymerization proces...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention relates to a crystal oil slippery resin used for synthetic leathers and a preparation method thereof. The crystal oil slippery resin is prepared from the following raw materials in parts by weight: 35-50 parts of dimethylformamide, 8-15 parts of polyether polyol, 4-8 parts of polyester polyol, 10-30 parts of methylene diphenyl diisocyanate, 0.5-1.8 parts of 1,4-butanediol, 3-6 parts of glycol, 10-20 parts of toluene, 10-20 parts of ethyl acetate, 3-5 parts of emulsified silicone oil and 0.01-0.03 part of antioxidant. Compared with the prior art, the crystal oil slippery resin disclosed by the invention has the beneficial effects that the crystal oil slippery resin can not only overcome the defects that oleoresin is tacky, poor in temperature resistance and the like, but also has the advantages of high temperature resistance, folding resistance, ageing resistance and the like. The crystal oil slippery resin used for the synthetic leathers is simple in process, convenient to produce and low in cost and can be directly applied to the posterior production procedure of the synthetic leathers; and third edition printing or spray coating can be adopted for the process.
Description
technical field [0001] The invention relates to a high-gloss type polyurethane varnish and a preparation method thereof, in particular to a crystal oil slippery resin for synthetic leather and a preparation method thereof, which is mainly used in the post-production process of synthetic leather. Background technique [0002] At present, the global PU synthetic leather market is about 3 million tons, mainly distributed in China, South Korea, Japan, South America, South Asia, Europe and other regions. China has nearly 2,000 large and small PU synthetic leather manufacturers (about 500 included in the statistics), ranking first in the world, and the output in 2009 is expected to reach 1.8 million tons. [0003] It can be foreseen that the research and development of PU synthetic leather will continue to progress due to more and more updated needs of human beings. In addition to the continuous innovation of production technology, equipment, and substrates, the development of PU ...
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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