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A kind of preparation method of neoprene latex with good dry stickiness

A technology of neoprene latex and dry bonding, which is applied in the direction of chloroprene adhesives, adhesives, adhesive types, etc., can solve the problems of reduced performance and lower stability of neoprene latex, and achieve good stability, High crystallinity, white color effect

Active Publication Date: 2021-12-21
重庆化医长寿化工集团有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, if it is added at a later stage, since the chloroprene latex will release hydrogen chloride during storage, the water glass will form flocs and precipitate, which will reduce the stability of the chloroprene latex, and at the same time, the performance will drop sharply. Excellent dry sticky performance, only ready to use

Method used

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  • A kind of preparation method of neoprene latex with good dry stickiness
  • A kind of preparation method of neoprene latex with good dry stickiness
  • A kind of preparation method of neoprene latex with good dry stickiness

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preparation example Construction

[0042] A kind of preparation method of the neoprene latex with good dry stickiness, comprises the following steps:

[0043] A. Water phase preparation

[0044] Add soft water to the water phase preparation tank, add water glass, sodium hydroxide, and potassium chloride to the soft water sequentially under stirring, and use a pump to circulate at the same time, so that the additives are completely dissolved in the soft water to obtain an aqueous phase liquid. Then take a sample and analyze it until it is qualified, and set it aside.

[0045] Start the water phase pump to transport the prepared water phase liquid to the water phase metering tank. When the required amount is reached, close the water phase feeding cock, stop the pump, and then use steam to raise the temperature to 26-30°C, and then make up the dilution water ( Including steam condensed water), to ensure the effect of emulsification and improve the utilization rate of the water phase preparation tank.

[0046] B....

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Abstract

The invention belongs to the field of latex preparation, and specifically discloses a preparation method of chloroprene latex with good dry stickiness, including four steps of water phase preparation, oil phase preparation, auxiliary agent preparation and polymerization. The auxiliary agent preparation includes initiating Agent preparation, terminator preparation. The preparation steps of the water phase are: sequentially adding water glass, liquid caustic soda and potassium chloride into soft water. By adopting the method of the invention, neoprene latex with good dry stickiness can be prepared.

Description

technical field [0001] The invention belongs to the field of latex preparation, and in particular relates to a preparation method of neoprene latex with good dry stickiness. Background technique [0002] Neoprene latex is a high molecular polymer, which belongs to one of the neoprene products. Neoprene latex has strong adhesive force. Neoprene latex can be used for dry bonding and wet bonding according to different usage requirements. Dry bonding refers to drying the moisture in the latex after gluing the test piece, and then heating it up while it is hot. Complete bonding, wet bonding refers to bonding the test piece in a wet state after being glued, and then drying to achieve bonding. [0003] Neoprene latex is generally used for wet bonding, but wet bonding takes a long time from bonding to firm bonding, and the bonding efficiency is low. There are many bonding materials that require excellent dry bonding performance. Water glass can effectively improve the initial visc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F136/18C08F2/30C08F2/38C09J111/02
CPCC08F136/18C09J111/02C08F2/30C08F2/38
Inventor 戴祖宏叶伟曾维亮于凯华
Owner 重庆化医长寿化工集团有限公司
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