Cation ethylene copolymer/aluminium salt composite leather dyeing oiling adjuvant and its preparation method

An ethylene copolymer and cationic technology, which is applied in the field of cationic ethylene copolymer/aluminum salt composite leather dyeing and fatliquoring additives and its preparation, can solve the problems of leather not being rubbed resistant and greasy leather surface, and achieve excellent absorption and reduce Difficulty and cost, effects in favor of adsorption and immobilization

Inactive Publication Date: 2006-03-08
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, after fixing the color, the oil content in the waste liquid not only does not decrease, but increases frequently. Because the binding force between the color fixing agent and the dye and oil is stronger than that with the leather, the leather after fixing is not resistant to rubbing. Often have the disadvantage of greasy leather surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] 1. Add 10g of methacryloyloxyethyl trimethyl quaternary ammonium salt, 40g of acrylamide, 3.2g of methacrylic acid, 15g of isopropanol and 130g of water into the In the four-necked bottle for export. in N 2 Under the protection of protection, add 1 g of ammonium persulfate pre-dissolved in 10 g of water and 2 g of sodium bisulfite pre-dissolved in 10 g of water at a temperature of 50 ° C, and stir and react at a temperature of 60 ° C for 6 hours to obtain a cationic ethylene copolymer with a molecular weight of 5000~ 7000. Dissolve 12.6g of aluminum sulfate in 20g of water, 1g of sodium citrate in 5g of water, slowly add the sodium citrate solution into the aluminum sulfate solution under stirring, then slowly add the aluminum sulfate solution into the polymer under stirring, 10% sodium hydroxide solution is used to adjust the pH=3.8-4.0 to obtain the dyeing and fatliquoring auxiliary agent for composite leather.

[0040] 2. Add 16g of methacryloyloxyethyl trimethyl ...

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PUM

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Abstract

A cationic ethylene copolymer / aluminium salt composition as the assistant for dyeing and greasing leather is prepared through proportionally mixing cationic vinyl monomer, acrylamide, (methyl) acrylate or alkyl substituted acrylamide, (methyl) acrylic acid or maleic acid anhydride, isopropanol and water, adding persulfate and sodium hydrogen sulfite at 40-50 deg.C under protection of N2, reacting at 60-70 deg.C for 5-8 hr to obtain cationic ethylene copolymer, compounding with aluminium salt and sodium nitrate, and using alkali to regulate pH=3.8-4.0.It can save dye and decrease the contents of dye and grease in sewage.

Description

1. Technical field [0001] The invention relates to a cationic ethylene copolymer / aluminum salt composite leather dyeing and fatliquoring auxiliary agent and a preparation method thereof, belonging to the field of auxiliary agent synthesis in the leather industry. 2. Background technology [0002] Cationic vinyl polymers are mainly cationic vinyl monomers and non-ionic vinyl monomers, such as (meth)acrylate, styrene, (meth)acrylamide and other monomers, which can be used for flocculation agents, biocompatible materials and antistatic agents, etc. "Petrochemical Industry". 1998, 27(4): 267~27; U.S.4415717, when used as a leather dyeing auxiliary, it is intended to improve the coloring strength of the leather surface and improve the light color effect caused by the extensive use of anionic retanning materials , often called color fixing agent World Leather.2001, 1:32~44. However, dyeing auxiliaries are not involved in the problem of improving the oil absorption rate at presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/52C14C9/00
Inventor 张廷有石碧戴金兰
Owner SICHUAN UNIV
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