CN1715425A - Filling type leather retanning agent and its preparing method - Google Patents
Filling type leather retanning agent and its preparing method Download PDFInfo
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- CN1715425A CN1715425A CN 200410025590 CN200410025590A CN1715425A CN 1715425 A CN1715425 A CN 1715425A CN 200410025590 CN200410025590 CN 200410025590 CN 200410025590 A CN200410025590 A CN 200410025590A CN 1715425 A CN1715425 A CN 1715425A
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- tanning agent
- filled
- composite tanning
- leather composite
- type leather
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Abstract
The filling type leather re-tanning agent is a kind of white ropy liquid with effective component content not less than 20.0 % and pH value not lower than 6.0. The filling type leather re-tanning agent is prepared with non-polar solvent, unsaturated binary carboxylic anhydride and ethylene, monomer and through oil soluble initiator initiated copolymerization, adding deionized water for azeotropism to evaporate the non-polar solvent, and adding neutralizing agent to form water soluble filling type leather re-tanning agent. The filling type leather re-tanning agent makes leather plump, elastic, foamed and filled.
Description
Technical field
The invention belongs to the leather chemical industry technical field, be specifically related to a kind of filled-type leather composite tanning agent and preparation method thereof.
Background technology
Leather composite tanning agent is a main raw in the leather production, it can significantly improve the feel of leather, make plentiful, flexible, the foaming of leather, have filling effect, can leather composite tanning agent performance quality be mainly reflected in and make leather have plentiful, elasticity, foaming and filling effect.
Leather composite tanning agent is of a great variety, not following tens kinds of the leather composite tanning agent of the domestic and international different trades mark, can satisfy simultaneously without any a kind in the at present commercially available leather composite tanning agent product makes leather have plentiful, elasticity, foaming, requirement that filling effect is good, they are all given priority on a certain performance, therefore use its feel of leather of existing leather composite tanning agent not enough to some extent unavoidably.
Summary of the invention
The objective of the invention is deficiency at existing leather composite tanning agent, provide a kind of satisfy simultaneously make leather have the filled-type leather composite tanning agent of plentiful, elasticity, foaming and filling effect, another task of the present invention provides the preparation method of this filled-type leather composite tanning agent.
Filled-type leather composite tanning agent provided by the invention is characterized in that filled-type leather composite tanning agent outward appearance is the clear wash rice viscous fluid of white viscous fluid, preferred white, and effective ingredient 〉=20.0% is preferred 20.0～22.0%, pH value 〉=6.0, preferred 6.0～7.0;
This filled-type leather composite tanning agent is with non-polar solvent, unsaturated dicarboxylic acid acid anhydride and vinyl monomer, copolymerization after oil-soluble initiator causes, and the prescription of employing is:
Non-polar solvent 70～75%
Unsaturated dicarboxylic acid acid anhydride 10～12%
Vinyl monomer 8～10%
Oil-soluble initiator 0.01～0.02%;
After oil-soluble initiator causes copolymerization, progressively add the deionized water azeotropic, steam non-polar solvent, add neutralizing agent then, form water miscible filled-type leather composite tanning agent, wherein
Neutralizing agent is 2～5%
Deionized water is 78～80%
Non-polar solvent is
The unsaturated dicarboxylic acid acid anhydride is
Vinyl monomer is R
1-CH=CH-R
2
Oil-soluble initiator is benzoyl peroxide (Bpo)
Neutralizing agent is ammoniacal liquor and diethanolamine
Deionized water is specific conductivity 〉=300k Ω
Filled-type leather composite tanning agent provided by the invention prepares by following processing step and condition:
Non-polar solvent, unsaturated dicarboxylic acid acid anhydride and vinyl monomer are dropped into reactor, be heated to about 80 ℃, drip oil-soluble initiator, reacted 2.5 hours, add deionized water then, azeotropic steams non-polar solvent, adds neutralizing agent reaction 1 hour, obtains filled-type leather composite tanning agent provided by the invention.
Some performance index of product be:
Outward appearance: white viscous fluid
Effective ingredient: 〉=20.0%
PH value 〉=6.0
The copolymerization in non-polar solvent of unsaturated dicarboxylic acid acid anhydride and vinyl monomer forms alternating copolymer, utilize carboxyl and neutralizing agent on the macromolecular chain partly to neutralize then, it is former to form water-soluble thing, its carboxyl can combine with the hide glue protein, thereby makes leather have plentiful, elasticity, foaming and filling effect.
Embodiment
The example example
With 750 kilograms of non-polar solvents, unsaturated dicarboxylic acid acid anhydride 120 kg, 80 kilograms of input reactors of vinyl monomer, open and stir, be heated to 80 ℃, stop heat, after 0.15 kilogram of end of dropping oil-soluble initiator, insulation reaction 2.5 hours, drip 800 kilograms of deionized waters then, azeotropic steams non-polar solvent, adds 35 kilograms of neutralizing agents, stir after 1 hour, be cooled to 50～55 ℃ of packings.
The performance index of products obtained therefrom are
Outward appearance: white viscous fluid
Effective ingredient: 〉=20.0%
PH value 〉=6.0.
Claims (11)
1, a kind of filled-type leather composite tanning agent, the outward appearance that it is characterized in that this leather composite tanning agent is white viscous fluid, effective ingredient 〉=20.0%, pH value 〉=6.0.
2, filled-type leather composite tanning agent according to claim 1 is characterized in that this leather composite tanning agent outward appearance is the clear wash rice viscous fluid of white.
3, filled-type leather composite tanning agent according to claim 1 and 2 is characterized in that this leather composite tanning agent effective ingredient is 20.0～22.0%.
4, according to claim 1 or 2 or 3 described filled-type leather composite tanning agents, it is characterized in that this leather composite tanning agent pH value 6.0～7.0.
5, a kind of each method of filled-type leather composite tanning agent for preparing in the claim 1 to 4, it is characterized in that this filled-type leather composite tanning agent is with non-polar solvent, unsaturated dicarboxylic acid acid anhydride and vinyl monomer, copolymerization after oil-soluble initiator causes, the prescription of employing is:
Non-polar solvent 70～75%
Unsaturated dicarboxylic acid acid anhydride 10～12%
Vinyl monomer 8～10%
Oil-soluble initiator 0.01～0.02%;
After oil-soluble initiator causes copolymerization, progressively add the deionized water azeotropic, steam non-polar solvent, add neutralizing agent then, form water miscible filled-type leather composite tanning agent, wherein
Neutralizing agent is 2～5%
Deionized water is 78～80%;
And by the preparation of following processing step and condition:
Non-polar solvent, unsaturated dicarboxylic acid acid anhydride, vinyl monomer are dropped into reactor, be heated to about 80 ℃, drip oil-soluble initiator, reacted 2.5 hours, add deionized water then, azeotropic steams non-polar solvent, adds neutralizing agent reaction 1 hour.
6, the method for preparing the filled-type leather composite tanning agent according to claim 5 is characterized in that described non-polar solvent is
7, the method for preparing the filled-type leather composite tanning agent according to claim 5 is characterized in that described unsaturated dicarboxylic acid acid anhydride is
8, the method for preparing the filled-type leather composite tanning agent according to claim 5 is characterized in that described vinyl monomer is
R
1-CH＝CH-R
2。
9, the method for preparing the filled-type leather composite tanning agent according to claim 5 is characterized in that described oil-soluble initiator is a benzoyl peroxide.
10, the method for preparing the filled-type leather composite tanning agent according to claim 5 is characterized in that described neutralizing agent is ammoniacal liquor, diethanolamine.
11, the method for preparing the filled-type leather composite tanning agent according to claim 5 is characterized in that the specific conductivity of described deionized water is 〉=300k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025590 CN1715425A (en) | 2004-06-30 | 2004-06-30 | Filling type leather retanning agent and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025590 CN1715425A (en) | 2004-06-30 | 2004-06-30 | Filling type leather retanning agent and its preparing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1715425A true CN1715425A (en) | 2006-01-04 |
Family
ID=35821584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410025590 Pending CN1715425A (en) | 2004-06-30 | 2004-06-30 | Filling type leather retanning agent and its preparing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1715425A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396795C (en) * | 2007-01-25 | 2008-06-25 | 陕西科技大学 | Production of filling-foam leather composite tanning agent |
| CN101514376B (en) * | 2008-02-22 | 2012-06-06 | 信保贸易实业股份有限公司 | Leather retanning filling agent, method for manufacturing same, method for leather retanning filling |
-
2004
- 2004-06-30 CN CN 200410025590 patent/CN1715425A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396795C (en) * | 2007-01-25 | 2008-06-25 | 陕西科技大学 | Production of filling-foam leather composite tanning agent |
| CN101514376B (en) * | 2008-02-22 | 2012-06-06 | 信保贸易实业股份有限公司 | Leather retanning filling agent, method for manufacturing same, method for leather retanning filling |
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