A kind of waterproof fatliquoring agent and preparation method thereof

A technology of fatliquor and fatty acid amide, which is applied in the field of waterproof fatliquor and its preparation, can solve problems such as salt generation, and achieve the effects of high cost performance, good hydrolysis resistance, and simple preparation process

Active Publication Date: 2020-06-05
四川亭江新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of them are N-alkyl amino acid salts, such as N-oleyl sarcosine sodium salt and N-lauryl sarcosine sodium salt. The preparation method is prepared by reacting fatty acid chloride RCOCl with the corresponding amino acid. Salt is produced in the process
Other types of amide carboxylates have not been reported

Method used

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  • A kind of waterproof fatliquoring agent and preparation method thereof
  • A kind of waterproof fatliquoring agent and preparation method thereof
  • A kind of waterproof fatliquoring agent and preparation method thereof

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preparation example Construction

[0033] A preparation method of a waterproof fatliquoring agent, comprising the following steps:

[0034] (1) Compound A and Compound B are mixed in a weight ratio of 1:0.1 to 0.25, both of which are long carbon chain compounds containing primary amino groups; then adding the total amount of primary amino groups in the mixture 0.8-1.2 times of the amount of the substance is used as the carboxylation modification reagent, and the stirring reaction is carried out to obtain the long carbon chain amine carboxyl compound.

[0035]The weight ratio of the above-mentioned compound A to compound B can specifically be: 1:0.1, 1:0.15, 1:0.2 or 1:0.25, etc. The amount of the carboxylation modification reagent can be 0.8 times, 0.9 times, 1.0 times, 1.1 times or 1.2 times the total amount of primary amino groups.

[0036] Mix 45-65 parts of long carbon chain amine carboxyl compound prepared in step (1), 8-15 parts of alkanolamide phosphate, 10-15 parts of maleic anhydride grafted hydrocarb...

Embodiment 1

[0051] (1) Add 281g of oleic acid amide and 28.1g of amino polydimethylsiloxane (the equivalent of ammonia value is 0.26mmol / g) into the reactor, then add 150g of glyoxylic acid with a mass fraction of 50%. Under reaction for 4h, a long carbon chain amine carboxyl compound was obtained.

[0052] (2) Take 100g of the long carbon chain amine carboxyl compound prepared in step (1), add 20g of cleaning agent 6503, 30g of CERAMER TM 67 polymers and 8g of 2-methyl-2,4-pentanediol were stirred evenly at 70°C, then a 30% mass fraction of alkali metal solution was added dropwise to adjust the pH to 8.0, and finally water was added to adjust the solid content to 45%. Get a water repellent fatliquor.

Embodiment 2

[0054] (1) 283g stearic acid amide and 56.6g aminopolydimethylsiloxane (ammonia value equivalent is 0.26mmol / g) are added in the reactor, then adding 150g mass fraction is 50% glyoxylic acid, at 90 After reacting at ℃ for 4h, a long carbon chain amine carboxyl compound was obtained.

[0055] (2) Take 100g of the long carbon chain amine carboxyl compound prepared in step (1), add 18g of cleaning agent 6503, 25g of CERAMER TM 1608 polymer and 10g of 2-methyl-2,4-pentanediol were stirred evenly at 70°C, then a 30% mass fraction of alkali metal solution was added dropwise to adjust the pH to 8.5, and finally water was added to adjust the solid content to 40%. Get a water repellent fatliquor.

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Abstract

The invention discloses a waterproof fatliquoring agent and a preparation method for the waterproof fatliquoring agent. The preparation method for the waterproof fatliquoring agent comprises the stepsthat (1), compound A and compound B are mixed according to the weight ratio of 1 : (0.1-0.25), the compound A and the compound B are both long carbon chain compound containing primary amine group, then carboxylation modification reagent with the total amount of substance being 0.8-1.2 times that of the primary amine group is added in the mixture, stirring reaction is performed, and long carbon chain amine carboxyl compound is obtained; (2), 45-65 parts of the long carbon chain amine carboxyl compound prepared in the step (1), 8-15 parts of alkanolamide phosphate, 10-15 parts of maleic anhydride grafting hydrocarbon polymer and 2-6 parts of compatilizer are mixed and stirred evenly, then alkali metal solution is dropped and added to adjust the pH to be 7.5-8.5, and then water is added to adjust the solid content to be 35-55%. The waterproof fatliquoring agent has better waterproof performance and good room temperature flowing performance.

Description

technical field [0001] The invention relates to the technical field of leather chemical industry, in particular to a waterproof fatliquoring agent and a preparation method thereof. Background technique [0002] From the chemical structure of skin collagen, we know that leather is composed of collagen fibers, which are formed by various amino acids through peptide bonds. There are many hydrophilic groups on the side chain of collagen fibers, including hydroxyl, carboxyl, peptidyl, amino and so on. At the same time, hydrophilic groups such as surfactants and salts may be introduced during leather processing, resulting in higher surface energy and easy water absorption of leather. In addition, there is a three-dimensional porous structure between the collagen fibers in leather, including a large number of pores and capillaries in natural and post-processing. After contact with water, capillary action is easy to occur, which increases the water absorption of the leather and eve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02C08G77/38
CPCC08G77/38C14C9/02
Inventor 余灯华李靖张袁圆刘国东
Owner 四川亭江新材料股份有限公司
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