Ammonium-free deliming agent and application thereof in leather deliming process
The invention provides an ammonium-free deliming agent and an application thereof in a leather deliming process. The deliming agent comprises polysuccinimides selecting from polysuccinimide and hydroxysuccinimide and existing in the ammonium-free deliming agent in a liquid or powder form. Under the...
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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
11.07.2012
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Abstract | The invention provides an ammonium-free deliming agent and an application thereof in a leather deliming process. The deliming agent comprises polysuccinimides selecting from polysuccinimide and hydroxysuccinimide and existing in the ammonium-free deliming agent in a liquid or powder form. Under the condition that the polysuccinimides exist in the ammonium-free deliming agent in the liquid form, the content of the polysuccinimides is over 50wt%, preferably over 60wt%, more preferably over 70wt%, and most preferably over 75wt%; and under the condition that the polysuccinimides exist in the ammonium-free deliming agent in the powder form, the content of the polysuccinimides is over 93wt%, preferably over 95wt%, more preferably over 98wt%. The deliming agent can replace acids and ammonium salts and can be hydrolyzed under a deliming condition. Under the condition that the deliming agent is used, a favorable mild deliming effect can be achieved, and leather defects caused by excessively adding the deliming agent c |
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AbstractList | The invention provides an ammonium-free deliming agent and an application thereof in a leather deliming process. The deliming agent comprises polysuccinimides selecting from polysuccinimide and hydroxysuccinimide and existing in the ammonium-free deliming agent in a liquid or powder form. Under the condition that the polysuccinimides exist in the ammonium-free deliming agent in the liquid form, the content of the polysuccinimides is over 50wt%, preferably over 60wt%, more preferably over 70wt%, and most preferably over 75wt%; and under the condition that the polysuccinimides exist in the ammonium-free deliming agent in the powder form, the content of the polysuccinimides is over 93wt%, preferably over 95wt%, more preferably over 98wt%. The deliming agent can replace acids and ammonium salts and can be hydrolyzed under a deliming condition. Under the condition that the deliming agent is used, a favorable mild deliming effect can be achieved, and leather defects caused by excessively adding the deliming agent c |
Author | FAN XIZHI ZHAO LIMING LI JING ZHENG RONG |
Author_xml | – fullname: ZHAO LIMING – fullname: ZHENG RONG – fullname: LI JING – fullname: FAN XIZHI |
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Notes | Application Number: CN2012117455 |
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RelatedCompanies | LANXESS WUXI CHEMICALS CO., LTD |
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Snippet | The invention provides an ammonium-free deliming agent and an application thereof in a leather deliming process. The deliming agent comprises polysuccinimides... |
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SubjectTerms | APPARATUS THEREFOR CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING CHEMISTRY COMPOSITIONS FOR TANNING HIDES LEATHER METALLURGY PELTS SKINS |
Title | Ammonium-free deliming agent and application thereof in leather deliming process |
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