Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of retanning filler and preparation method thereof

A filler and modifier technology, applied in the field of retanning filler and its preparation, can solve the problems of limited application of dialdehyde starch, unsatisfactory effect, weak permeability, etc. fine-grained effect

Active Publication Date: 2022-04-01
WENZHOU UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the permeability of dialdehyde starch to wet blue / wet white leather is weak, and it cannot fully combine with collagen fibers. The effect of direct application is not ideal, which greatly limits the application of dialdehyde starch in leather processing.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of retanning filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A retanning filler, comprising the following components by weight:

[0032] 100 parts of dialdehyde starch;

[0033] 10 parts of degradation agent;

[0034] 8 parts of modifier;

[0035] 3 parts of dispersant;

[0036] Catalyst 0.8 part.

[0037] The modifying agent is a mixture of hexadiene tartrate diamine, 3-(4-chlorophenyl)glutaric acid and 1,3-diamino-2-propanol, the mass ratio of which is 1:3:1.

[0038] The degradation agent is a mixture of an enzyme degradation agent and an acid degradation agent, and its mass ratio is 1:4.

[0039] The enzyme degradation agent is trypsin.

[0040] Described acid degradation agent comprises following material composition in parts by weight:

[0041] 2 parts of sulfuric acid aqueous solution;

[0042] 1 part of hydrochloric acid aqueous solution;

[0043] 1 part of lactic acid aqueous solution.

[0044] The mass concentrations of the sulfuric acid aqueous solution, hydrochloric acid aqueous solution and lactic acid aqueo...

Embodiment 2

[0052] A retanning filler, comprising the following components by weight:

[0053] 90 parts of dialdehyde starch;

[0054] 9 parts of degradation agent;

[0055] 6 parts of modifier;

[0056] 3 parts of dispersant;

[0057] Catalyst 0.8 part.

[0058] The modifying agent is a mixture of hexadiene tartrate diamine, 3-(4-chlorophenyl)glutaric acid and 1,3-diamino-2-propanol, the mass ratio of which is 1:3:1.

[0059] The degradation agent is a mixture of an enzyme degradation agent and an acid degradation agent, and its mass ratio is 1:4.

[0060] The enzyme degradation agent is trypsin.

[0061] Described acid degradation agent comprises following material composition in parts by weight:

[0062] 1 part of sulfuric acid aqueous solution;

[0063] 2 parts of hydrochloric acid aqueous solution;

[0064] 1 part of lactic acid aqueous solution.

[0065] The mass concentrations of the sulfuric acid aqueous solution, hydrochloric acid aqueous solution and lactic acid aqueous s...

Embodiment 3

[0073] A retanning filler, comprising the following components by weight:

[0074] 110 parts of dialdehyde starch;

[0075] 14 parts of degradation agent;

[0076] 9 parts of modifier;

[0077] 3 parts of dispersant;

[0078] Catalyst 0.8 part.

[0079] The modifying agent is a mixture of hexadiene tartrate diamine, 3-(4-chlorophenyl)glutaric acid and 1,3-diamino-2-propanol, the mass ratio of which is 1:3:1.

[0080] The degradation agent is a mixture of an enzyme degradation agent and an acid degradation agent, and its mass ratio is 1:4.

[0081] The enzyme degradation agent is trypsin.

[0082] Described acid degradation agent comprises following material composition in parts by weight:

[0083] 2 parts of sulfuric acid aqueous solution;

[0084] 1 part of hydrochloric acid aqueous solution;

[0085] 2 parts of lactic acid aqueous solution.

[0086] The mass concentrations of the sulfuric acid aqueous solution, the hydrochloric acid aqueous solution and the lactic a...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a retanning filler and a preparation method thereof, which is prepared by using dialdehyde starch as a base material, and at the same time using degradation agents, modifiers and other auxiliary agents through modification treatment; Carry out the degradation treatment for the first time, carry out the second degradation with acid degrading agent again, what select for use on the acid degrading agent is the mixture of sulfuric acid aqueous solution, hydrochloric acid aqueous solution and lactic acid aqueous solution; Modification treatment; on the modifier, a mixture of hexadiene tartrate diamine, 3-(4-chlorophenyl) glutaric acid and 1,3-diamino-2-propanol was selected, and the synergy of these substances Under the action, the retanning and filling performance of the product can be greatly improved. The retanning filler of the present invention has a good filling effect after application, the crust leather is plump and soft, the grain surface is flat and fine, and the leather yield is high; at the same time, the chromium content in the waste liquid can be significantly reduced, and the chromium content in the waste liquid can be reduced by 85% , Reduce environmental pollution, green and environmental protection.

Description

technical field [0001] The invention relates to the technical field of leather chemical industry, and more specifically relates to a retanning filler and a preparation method thereof. Background technique [0002] Tanning is the process of converting raw hide into leather, mainly including primary tanning, retanning and other processes, wherein retanning is the further processing of wet blue / wet white leather, adjusting its properties to meet the requirements of leather leather, and endowing leather with unique characteristics sensory properties and usability. The retanning agent that plays a key role in the retanning process can not only further change the charge or state of the wet blue / wet white, which is beneficial to the uniform coloring of the subsequent dyes and the uniform penetration of the fatliquoring agent, but also has a certain filling effect. Therefore, it is also called retanning filler. [0003] As the second largest polluter in the light industry, the tan...

Claims

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C14C3/08C14C3/22
CPCC14C3/08C14C3/22
Inventor 沈晓军兰茜许晓红罗卫平
Owner WENZHOU UNIV