CN103409567A - Chrome-free leather tanning agent and application method thereof - Google Patents
Chrome-free leather tanning agent and application method thereof Download PDFInfo
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- CN103409567A CN103409567A CN2013103817895A CN201310381789A CN103409567A CN 103409567 A CN103409567 A CN 103409567A CN 2013103817895 A CN2013103817895 A CN 2013103817895A CN 201310381789 A CN201310381789 A CN 201310381789A CN 103409567 A CN103409567 A CN 103409567A
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- tanning agent
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Abstract
The invention relates to a chrome-free leather tanning agent and an application method thereof and belongs to the technical field of leather cleaning. Based on the wet weight of leather, the chrome-free leather tanning agent comprises the following components: 2 to 3 percent of a phenol organic matter, 0.8 to 1.5 percent of formaldehyde and 0.2 to 1 percent of a sulfonating agent. The application method of the chrome-free leather tanning agent comprises the following steps: placing soaked leather which is prepared into a prepared solution; and under the conditions that the pH value of the solution is adjusted to be 4.5 to 5.5 and the temperature is 30 to 40 DEG C, adding the same amount of the chrome-free leather tanning agent for three times and rotating for 60 minutes after adding the chrome-free leather tanning agent at each time. The chrome-free leather tanning agent is low in industrial pollution and has an environment-friendly performance. Leather produced by the chrome-free leather tanning agent is excellent in shrinkage temperature, flexibility and formability.
Description
Technical field
The present invention relates to the clearer production technology of leather production technical field, particularly a kind of Chrome-free leather tanning agent and application method thereof.
Background technology
Leather tanning is of paramount importance operation in leather processing, it is the process of leather that rawhide is changed into, to utilize tannin to carry out chemistry and Physical Processing to the protein of intracutaneous, by some row technique, and adopt some chemical agents, make some protein in the animal hides such as pig, ox, sheep that a series of variation occur, make collagen protein generation Denaturation.Tanned leather not only soft, firmly, but also wear-resisting, be not easy to occur putrid and deteriorated, be the daily living article that can be used for doing various skins processed.
Traditional method is all, with chromic salts, leather is carried out to tanning, after chrome tanning, each physics and chemistry of leather obviously improves, but the chromium content after tanning in waste water exceeds standard greatly, to ecotope, people and animals cause very large harm, survival and development to the mankind itself have formed great threat, on the other hand, China's chromium resource is shortage comparatively, chromium processed chromium used in a large number need to be also more and more from the demand of chromium external import and some high technology industries, cause the price of chromium more and more higher, Chinese scholar is is constantly researched and developed for replacing the various chrome-free tanning agent of chromic salts in recent years, wherein just comprise the vegetable tanning preparation, synthetic tanning agents, aminoresin tanning agents etc., but the tanning ability of some tanning agents is general, also require further improvement raising.
Summary of the invention
Purpose of the present invention is exactly for the deficiency in background technology, thereby a kind of Chrome-free leather tanning agent and application method thereof are provided, this chrome-free tanning agent is a kind of environment amenable tanning agents, and the leather of applying after this chrome-free tanning agent is processed has good shrinkage temperature, flexibility and formability.
In order to solve the existing problem the present invention of background technology, adopted following technical scheme: a kind of Chrome-free leather tanning agent, the organic compound that it obtains through condensation, sulfonation for phenol organic matter, formaldehyde and sulphonating agent.
In a preferred embodiment of the present invention, described organic compound component be take the leather wet restatement: phenol organic matter is 2%～3%, and formaldehyde is 0.8%～1.5%, and sulphonating agent is 0.2%～1%.
In a preferred embodiment of the present invention, described phenol organic matter can be phenol, naphthols or dihydroxyphenyl propane.
In a preferred embodiment of the present invention, described sulphonating agent can be the vitriol oil or oleum.
The application method of Chrome-free leather tanning agent in the present invention, first will put into ready solution at the immersion skin of system, and adjust pH value to 4.5-5.5 when solution, temperature is under the condition of 30-40 ℃, divide and add the described Chrome-free leather tanning agent of same components three times, add rear rotation 60 minutes at every turn.
It specifically comprises the following steps: add for the first time described Chrome-free leather tanning agent, adjust pH value to 4.5-5.5 with formic acid or phosphoric acid, temperature 30-40 ℃, rotated 60 minutes; Add for the second time described Chrome-free leather tanning agent, adjust pH value to 4.5-5.5 with formic acid or phosphoric acid, temperature 30-40 ℃, rotated 60 minutes; Add for the third time described Chrome-free leather tanning agent, adjust pH value to 4.5-5.5 with formic acid or phosphoric acid, temperature 30-40 ℃, rotated 60 minutes.
The beneficial effect that the present invention adopts above-mentioned technical scheme to reach is: chrome-free tanning agent provided by the invention be by phenol organic matter, formaldehyde and sulphonating agent through condensation, sulfonation and organic compound, industrial pollution is few, comparatively friendly to environment; And have good shrinkage temperature, flexibility and formability with the leather that this chrome-free tanning agent tanning is produced, be applicable to the tanning of various animal skin (as pigskin, ox-hide, sheepskin etc.), and the manufacturing processed of the leather that is fit for various uses (as clothing leather, shoes leather, Napped leather, automobile cushion leather etc.).
Embodiment
Below in conjunction with embodiments of the invention, be explained in detail, thereby so that advantages and features of the invention can be easier to be those skilled in the art will recognize that, protection scope of the present invention made to more defining of clear and definite.
Embodiment mono-
The present invention uses raw material to be the domestic animal pigskin, and the Chrome-free leather tanning agent component of its use be take the leather wet restatement: phenol is 2%, and formaldehyde is 0.8%, and the vitriol oil is 0.2%.
The application method of Chrome-free leather tanning agent in its leather tanning, first will put into ready solution at the immersion pigskin of system, then, add for the first time this Chrome-free leather tanning agent, adjust pH value to 4.5 with formic acid, and temperature is controlled to be 30 ℃, rotates 60 minutes; Add for the second time this Chrome-free leather tanning agent, adjust pH value to 4.5 with formic acid, temperature is controlled to be 30 ℃, rotates 60 minutes; Add for the third time this Chrome-free leather tanning agent, adjust pH value to 4.5 with formic acid, 30 ℃ of temperature, rotated 60 minutes.
After the pigskin of Chrome-free leather tanning agent tanning washes with water, stop drum and spend the night, both can measure its shrinkage temperature after naturally drying.
Embodiment bis-
The present invention uses raw material to be the domestic animal pigskin, and the Chrome-free leather tanning agent component of its use be take the leather wet restatement: naphthols is 2.5%, and formaldehyde is 1.2%, and the vitriol oil is 0.6%.
The application method of Chrome-free leather tanning agent in its leather tanning, first will put into ready solution at the immersion pigskin of system, then, add for the first time this Chrome-free leather tanning agent, adjust pH value to 5.0 with phosphoric acid, and temperature is controlled to be 35 ℃, rotates 60 minutes; Add for the second time this Chrome-free leather tanning agent, adjust pH value to 5.0 with phosphoric acid, temperature is controlled to be 35 ℃, rotates 60 minutes; Add for the third time this Chrome-free leather tanning agent, adjust pH value to 5.0 with phosphoric acid, 35 ℃ of temperature, rotated 60 minutes.
After the pigskin of Chrome-free leather tanning agent tanning washes with water, stop drum and spend the night, both can measure its shrinkage temperature after naturally drying.
Embodiment tri-
The present invention uses raw material to be the domestic animal pigskin, and the Chrome-free leather tanning agent component of its use be take the leather wet restatement: dihydroxyphenyl propane is 3%, and formaldehyde is 1.5%, and oleum is 1%.
The application method of Chrome-free leather tanning agent in its leather tanning, first will put into ready solution at the immersion pigskin of system, then, add for the first time this Chrome-free leather tanning agent, adjust pH value to 5.5 with formic acid, and temperature is controlled to be 40 ℃, rotates 60 minutes; Add for the second time this Chrome-free leather tanning agent, adjust pH value to 5.5 with formic acid, temperature is controlled to be 40 ℃, rotates 60 minutes; Add for the third time this Chrome-free leather tanning agent, adjust pH value to 5.5 with formic acid, 40 ℃ of temperature, rotated 60 minutes.
After the pigskin of Chrome-free leather tanning agent tanning washes with water, stop drum and spend the night, both can measure its shrinkage temperature after naturally drying.
Finally can obtain the shrinkage temperature of embodiment mono-to embodiment tri-obtained leather and the shrinkage temperature of the test-results of feel: embodiment mono-is 98 ℃, and feel is soft; The shrinkage temperature of embodiment bis-is 102 ℃, and feel is soft; The shrinkage temperature of embodiment tri-is 105 ℃, and feel is soft.As can be known like this have good shrinkage temperature and feel through the tanned leather of Chrome-free leather tanning agent of the present invention.
Claims (6)
1. a Chrome-free leather tanning agent, is characterized in that: the organic compound that it obtains through condensation, sulfonation for phenol organic matter, formaldehyde and sulphonating agent.
2. Chrome-free leather tanning agent according to claim 1, is characterized in that, described organic compound component be take the leather wet restatement: phenol organic matter is 2%～3%, and formaldehyde is 0.8%～1.5%, and sulphonating agent is 0.2%～1%.
3. Chrome-free leather tanning agent according to claim 1, it is characterized in that: described phenol organic matter can be phenol, naphthols or dihydroxyphenyl propane.
4. Chrome-free leather tanning agent according to claim 1, it is characterized in that: described sulphonating agent can be the vitriol oil or oleum.
5. application method that adopts Chrome-free leather tanning agent as claimed in claim 1, it is characterized in that: first will put into ready solution at the immersion skin of system, when solution adjusts pH value to 4.5-5.5, temperature is under the condition of 30-40 ℃, divide and add the described Chrome-free leather tanning agent of same components three times, add rear rotation 60 minutes at every turn.
6. the application method of Chrome-free leather tanning agent according to claim 5, is characterized in that, this application method comprises the following steps:
Add for the first time described Chrome-free leather tanning agent, adjust pH value to 4.5-5.5 with formic acid or phosphoric acid, temperature 30-40 ℃, rotated 60 minutes; Add for the second time described Chrome-free leather tanning agent, adjust pH value to 4.5-5.5 with formic acid or phosphoric acid, temperature 30-40 ℃, rotated 60 minutes; Add for the third time described Chrome-free leather tanning agent, adjust pH value to 4.5-5.5 with formic acid or phosphoric acid, temperature 30-40 ℃, rotated 60 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103817895A CN103409567A (en) | 2013-08-29 | 2013-08-29 | Chrome-free leather tanning agent and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103817895A CN103409567A (en) | 2013-08-29 | 2013-08-29 | Chrome-free leather tanning agent and application method thereof |
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| CN103409567A true CN103409567A (en) | 2013-11-27 |
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| CN2013103817895A Pending CN103409567A (en) | 2013-08-29 | 2013-08-29 | Chrome-free leather tanning agent and application method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178589A (en) * | 2014-09-12 | 2014-12-03 | 陕西科技大学 | Sulfonation cup aromatic tanning agent for leather tanning and preparation method thereof |
| CN104357593A (en) * | 2014-11-25 | 2015-02-18 | 陕西科技大学 | Water-soluble sulfonated resorcinol calixarene tanning agent applied to tannage of leather and preparation method of tanning agent |
Citations (3)
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| CN1053447A (en) * | 1990-01-16 | 1991-07-31 | 中国科学院成都有机化学研究所 | A kind of manufacture method of mehtod for auxiliary bleaching synthetic tanning agent |
| CN1465719A (en) * | 2002-06-12 | 2004-01-07 | 四川大学 | Process for preparing high astringency light color leather main tanning agent |
| RU2008145677A (en) * | 2008-11-20 | 2011-06-10 | Виктор Николаевич Иванов (RU) | METHOD OF OBTAINING A DUTER |
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2013
- 2013-08-29 CN CN2013103817895A patent/CN103409567A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN1053447A (en) * | 1990-01-16 | 1991-07-31 | 中国科学院成都有机化学研究所 | A kind of manufacture method of mehtod for auxiliary bleaching synthetic tanning agent |
| CN1465719A (en) * | 2002-06-12 | 2004-01-07 | 四川大学 | Process for preparing high astringency light color leather main tanning agent |
| RU2008145677A (en) * | 2008-11-20 | 2011-06-10 | Виктор Николаевич Иванов (RU) | METHOD OF OBTAINING A DUTER |
Non-Patent Citations (1)
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| 王国伟: "双酚A磺甲基化及其缩合物产品的研究", 《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅰ辑》, no. 02, 15 December 2002 (2002-12-15) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178589A (en) * | 2014-09-12 | 2014-12-03 | 陕西科技大学 | Sulfonation cup aromatic tanning agent for leather tanning and preparation method thereof |
| CN104178589B (en) * | 2014-09-12 | 2016-04-20 | 陕西科技大学 | Leather tanning Sulfonated calixarenes tanning agent and preparation method thereof |
| CN104357593A (en) * | 2014-11-25 | 2015-02-18 | 陕西科技大学 | Water-soluble sulfonated resorcinol calixarene tanning agent applied to tannage of leather and preparation method of tanning agent |
| CN104357593B (en) * | 2014-11-25 | 2016-06-08 | 陕西科技大学 | Leather tanning water soluble sulfonated resorcinol calixarenes tanning agent and preparation method thereof |
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Application publication date: 20131127 |