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A kind of preparation method of palm oil synthetic fatliquoring agent
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A technology of palm oil and fatliquor, applied in the field of preparation of palm oil synthetic fatliquor, can solve the problems of few, reduced oily feeling, inconvenient to use and the like
Active Publication Date: 2017-05-10
QI HE LI HOU CHEM CO LTD
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Problems solved by technology
This modification method cuts off the fat chain and reduces the oily feeling of the oil itself. After fatliquing, the leather becomes dry and has a poor oily feeling. Moreover, due to the high saturation of palm oil, the obtained product is still a paste product, which is inconvenient to use. Therefore, although palm oil has many advantages and is widely used in other fields, it has rarely been used in leather fatliquor
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Embodiment 1
[0042] (1) In parts by weight, add 30 parts of ethoxylated beef hoof oil, 70 parts of palm oil, and 0.1 part of catalyst, heat up to 90°C, oxidize with air for 24 hours, and cool down to 50°C;
[0043] (2) Add 5.5 parts of maleic anhydride, heat up to 85-95°C and react for 4 hours;
[0044] (3) Cool down to 40°C, add an aqueous solution of 2.4 parts of sodium hydroxide dissolved in 5.6 parts of water, and neutralize the pH of the system to 6-7;
[0045] (4) Add 10 parts of sodium metabisulfite dissolved in 15 parts of water, heat up to 75-80°C, react for 4 hours, cool down to 40°C, add 18.8 parts of water, adjust the weight percent solid content to about 75%, stir for 1 hour, That is, 157.4 parts of palm oil synthetic fatliquor was obtained, the appearance of which was a reddish-brown transparent oily liquid, and the freezing point was below 0°C.
[0046] The test results after the application test are shown in Table 1.
[0047] Table 1 Test results of skin samples
[0048]...
Embodiment 2
[0051] (1) In parts by weight, add 25 parts of ethoxylated beef hoof oil, 75 parts of palm oil, and 0.1 part of catalyst, heat up to 90°C, oxidize with air for 28 hours, and cool down to 50°C;
[0052] (2) Add 6.5 parts of maleic anhydride, heat up to 85-95°C and react for 4 hours;
[0053] (3) Cool down to 40°C, add an aqueous solution of 2.4 parts of sodium hydroxide dissolved in 5.6 parts of water, and neutralize the pH of the system to 6-7;
[0054] (4) Add 10 parts of sodium pyrosulfite dissolved in 15 parts of water, heat up to 75-80°C, react for 4 hours, cool down to 40°C, add 19 parts of water, adjust the weight percent solid content to about 75%, stir for 1 hour, That is, 158.6 parts of palm oil synthetic fatliquor was obtained, the appearance of which was a reddish-brown transparent oily liquid, and the freezing point was below 0°C.
[0055] The test results after the application test are shown in Table 2.
[0056] Table 2 Test results of skin samples
[0057] ...
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Abstract
The invention provides a preparation method of a palm oil synthetic greasing agent. The preparation method of the palm oil synthetic greasing agent particularly comprises the following steps that (1), 25-40 parts of ethylene oxide neat-foot oil, 60-75 parts of palm oil and 0.1 part of catalyst by weight are added and heated to 90 DEG C, air is introduced for oxidation for 24-30 hours, and the temperature is decreased to 50 DEG C; (2), 5-8 parts of maleic anhydride is added and heated to 85-95 DEG C to react for 3-4 hours; (3), the temperature is decreased to 40 DEG C, an aqueous solution with 2.4 parts of sodium hydroxide dissolved in 5.6 parts of water is added, and the pH value of the system is neutralized to 6-7; (4), an aqueous solution with 10 parts of sodium pyrosulfite dissolved in 15 parts of water is added and heated to 75-80 DEG C to react for 4-5 hours, the temperature is decreased to 40 DEG C, 18.8 parts of water is added, the weight percentage of solids is adjusted to be about 75%, stirring is conducted for 1 hour, and therefore the palm oil synthetic greasing agent is obtained and the palm oil synthetic greasing agent is reddish brown transparent oily liquid.
Description
technical field [0001] The invention relates to a preparation method of palm oil synthetic fatliquoring agent, which belongs to the technical field of leather chemical industry. Background technique [0002] Palm oil is a tropical woody vegetable oil. It is currently the vegetable oil variety with the largest production, consumption and international trade in the world. It is also called "the world's three major vegetable oils" together with soybean oil and rapeseed oil. It has more than 5,000 years of experience. food history. After refining and fractionation, products with different melting points can be obtained, which are widely used in the catering industry, food industry and oil chemical industry. Palm oil has a strong sense of oil, resistance to oxidation, yellowing, and low price. Compared with rapeseed oil, the raw material of fatliquoring agent commonly used in leather industry, its price is only about 45-55% of rapeseed oil. It should be used as A better choice ...
Claims
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Application Information
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