Polymer retanning fatliquoring agent and preparation method thereof, polymer retanning fatliquoring agent emulsion, and preparation method and application for polymer retanning fatliquoring agent emulsion

A technology of retanning fatliquor and polymer, which is applied in the fields of polymer retanning fatliquor and its preparation, polymer retanning fatliquor emulsion and its preparation, and can solve the problem of poor acid and dielectric resistance, dimethylol Propionic acid is expensive and other problems, to achieve good resistance to oil extraction, excellent fatliquoring effect, and reduce production costs

Active Publication Date: 2020-04-21
四川德赛尔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, dimethylolpropionic acid is usually used as a hydrophilic chain extender. The hydrophilic group of dimethylolpropionic acid is carboxyl, which can

Method used

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  • Polymer retanning fatliquoring agent and preparation method thereof, polymer retanning fatliquoring agent emulsion, and preparation method and application for polymer retanning fatliquoring agent emulsion
  • Polymer retanning fatliquoring agent and preparation method thereof, polymer retanning fatliquoring agent emulsion, and preparation method and application for polymer retanning fatliquoring agent emulsion

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preparation example Construction

[0052] According to a first aspect of the present invention, a kind of preparation method of polymer retanning and fatliquoring agent is provided, comprising the following steps:

[0053] (a) providing an amphiphilic chain extender containing a sulfonic acid group and a hydroxyl group and having a long-chain alkane structure;

[0054] (b) reacting an amphiphilic chain extender, an isocyanate and optionally a hydroxyl compound to obtain a polymeric retanning fatliquor.

[0055] Specifically, the sulfonic acid group on the amphiphilic chain extender can be introduced into the polymer retanning fatliquoring agent as a hydrophilic group. It has good extractability and washability, and at the same time ensures that the polymer retanning and fatliquoring agent has excellent acid resistance and electrolyte resistance.

[0056] In the present invention, the long-chain alkane structure refers to a saturated or unsaturated carbon-alkane structure. The long-chain alkane structure of th...

Embodiment approach

[0063] As an optional embodiment of the present invention, in step (a), the preparation method of the amphiphilic chain extender comprises the following steps:

[0064] React the modified oil and alcohol amine compound under the action of a catalyst to obtain an amphiphilic chain extender;

[0065] Wherein, the modified oil includes any one or a combination of at least two of sulfonated vegetable oil, sulfonated vegetable oil fatty acid ester or sulfated castor oil.

[0066] To ensure that the amphiphilic chain extender contains a specific hydrophilic group sulfonic acid group and a lipophilic long-chain alkane structure, it is necessary to use specific reaction materials.

[0067] Sulfonated vegetable oil, sulfonated vegetable oil fatty acid ester or sulfated castor oil can be used as modified oil to introduce sulfonic acid groups to the amphiphilic chain extender.

[0068] In the preparation method of the amphiphilic chain extender, the amphiphilic chain extender not only h...

Embodiment 1

[0114] The present embodiment provides a kind of preparation method of polymer retanning and fatliquor, comprising the following steps:

[0115] (1) Put 1000g of sulfonated vegetable oil with a mass content of 75% into a 2000mL three-necked flask, then add 150g of diethanolamine, gradually raise the temperature to 90-100°C, keep it open for about 1 hour to remove water, and vacuumize for 30 minutes until the residual water is reduced to Below 0.1% (Karl Fischer method), gradually warm up to 135°C, add 5g of sodium methoxide catalyst, after 3 hours of heat preservation reaction, take a sample every 1h to detect the amine value, when the amine value is stable, cool down to end the reaction, cool down, and get Amphiphilic chain extender with sulfonic acid group and hydroxyl group and long-chain alkane structure;

[0116] (2) Add 50 g of monoglyceride oleate to 100 g of the amphiphilic chain extender, stir and heat up to 41° C. to obtain mixture A;

[0117] (3) Add 55 g of toluen...

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Abstract

The invention provides a polymer retanning fatliquoring agent and a preparation method thereof, a polymer retanning fatliquoring agent emulsion, and a preparation method and application for the polymer retanning fatliquoring agent emulsion, and relates to the technical field of leather chemical preparation. The preparation method for the polymer retanning fatliquoring agent comprises the followingsteps: subjecting an amphiphilic chain extender simultaneously containing a sulfonic acid group and a hydroxyl group and having a long-chain alkane structure, isocyanate and optionally a hydroxyl compound to a reaction so as to obtain the polymer retanning fatliquoring agent, wherein the amphiphilic chain extender with a specific structure can introduce a hydrophilic group, namely a sulfonic group and a lipophilic structure, namely the long-chain alkane structure into the polymer retanning fatliquoring agent, so the polymer retanning fatliquoring agent has amphipathy, namely, the polymer retanning fatliquoring agent has both hydrophilicity and lipophilicity; and the polymer retanning fatliquoring agent has good retanning and fatliquoring effects. The invention also provides the polymer retanning fatliquoring agent which is prepared by adopting the preparation method provided by the invention. The invention also provides the polymer retanning fatliquoring agent emulsion which comprisesthe polymer retanning fatliquoring agent.

Description

technical field [0001] The invention relates to the technical field of preparation of leather chemicals, in particular to a polymer retanning and fatliquoring agent and a preparation method thereof, a polymer retanning and fatliquor emulsion, a preparation method and application thereof. Background technique [0002] As a kind of leather retanning and fatliquor, polymer retanning and fatliquoring agent is an important research direction of leather chemicals in recent years. [0003] The synthesis method of polymer retanning and fatliquor mainly includes two categories: one is (meth)acrylic acid or its esters, maleic acid or its esters or other vinyl compounds obtained by free radical copolymerization; the second type Polyol compounds, hydrophilic chain extenders such as dimethylol propionic acid / butyric acid, etc., and polyisocyanates are gradually polycondensed to obtain polyurethane polymer retanning and fatliquoring agents. There are relatively many studies on the prepar...

Claims

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Application Information

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IPC IPC(8): C08G18/38C08G18/36C08G18/66C08G18/48C14C3/22C14C9/04
CPCC08G18/36C08G18/3825C08G18/3855C08G18/4833C08G18/6666C08G18/6696C14C3/22C14C9/04
Inventor 彭章义丁学斌周玉建韩茂清张小波康俊涛叶霖龙进
Owner 四川德赛尔新材料科技有限公司
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