Continuous production process of environmental-protection adhesive
A production process and technology of adhesives, applied in the directions of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of high labor cost, complicated cleaning process, frequent operation, etc., and reduce the workload of personnel. , The reaction process is easy to control, and the cleaning cycle is prolonged.
Active Publication Date: 2018-11-30
山东恒正新材料有限公司
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Problems solved by technology
There are obvious defects and deficiencies in the semi-continuous operation process: 1) Due to the discontinuity of the process operation, the feeding method and feeding speed are different each time, which will affect the microscopic properties of the emulsion polymerization product (such as: the shape of particles , particle size and its distribution, molecular weight and its distribution, coagulation content, degree of branching, etc.), resulting in differences in the macroscopic physical properties of the emulsion (such as: emulsion viscosity, thickening effect, physical and mechanical properties of the film, etc.)
The cleaning process is complicated and difficult, which produces a certain amount of sewage, and at the same time delays normal production and increases production costs
3) Due to the process characteristics of intermittent operation and semi-continuous operation, frequent operations in production lead to serious restrictions on production efficiency and high labor costs
Due to frequent operations, problems such as operation errors are prone to occur during operation, which will damage the product and cause waste
In addition, frequent operations are also prone to safety accidents
Method used
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Embodiment 1
[0029] A kind of continuous production process of environmental protection adhesive, it comprises the following steps:
[0030] 1) First add 2230kg of demineralized water and 15kg of emulsifier to the 1# pre-emulsification tank. After stirring the emulsifier to completely dissolve, add 5450kg of butyl acrylate, 118kg of hydroxyethyl acrylate, 60kg of acrylic acid and 10kg of initiator. After adding all the ingredients, stir for about 10 minutes to form a relatively stable pre-emulsion.
[0031]2) Add about 2000kg of pure water to the 1# reactor, and add 20kg of ammonium persulfate and 10kg of sodium bicarbonate according to the formula ratio. After the ammonium persulfate and sodium bicarbonate are completely dissolved, heat the mixed solution to about 85°C. Open the valve connecting the 1# pre-emulsification tank and the 1# reactor, add the pre-emulsion liquid evenly and continuously to the 1# reactor, start the polymerization reaction, and drop it within 2~5 hours. As the ...
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The invention discloses a continuous production process of an environmental-protection adhesive. The process determines the feeding and reaction time by adjusting and controlling the material ratio and the liquid level of a reaction kettle, a material is continuously and uninterruptedly conveyed by a material conveying pump to maintain continuous performing of reaction, the influence of conventional batch feeding on the product quality is avoided, and through adjustment of the reaction time and the feeding mode of different reaction kettles, the quality stability of the obtained product can beremarkably improved, the reaction process is easy to control, the production cost is saved, the continuous production of a pressure sensitive adhesive is achieved completely, and the production process has wide market application value.
Description
technical field [0001] The invention relates to a continuous production process of an environmental-friendly adhesive, and belongs to the technical field of production of polyacrylate water-based adhesives. Background technique [0002] The full name of pressure-sensitive adhesive is pressure-sensitive adhesive, which is a type of adhesive that is sensitive to pressure. Pressure-sensitive adhesive is an important independent branch in the field of adhesives. Because of its dry stickiness and permanent stickiness, it is customary to call pressure-sensitive adhesive as self-adhesive. Its characteristics are "easy to stick, not difficult to remove, and peeling without damage." Because of its convenient use and wide range of uses, pressure-sensitive adhesives have developed extremely rapidly, with growth rates of more than 10% both at home and abroad in recent years. With the increasing improvement of environmental protection requirements and social regulations, pressure-sensit...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C09J133/08C08F220/18C08F220/20C08F220/06
CPCC08F220/18C08F220/1804C09J133/066C08F220/20C08F220/06
Inventor 李乃伟黄晓东李一张鹏程
Owner 山东恒正新材料有限公司