Preparation method of redispersible waterborne pressure sensitive rubber latex

A pressure-sensitive adhesive and redispersion technology, which is applied in the direction of adhesives, film/sheet adhesives, adhesive types, etc., can solve the problems of high cost and poor bonding strength of adhesive films, and achieve increased production efficiency, The effect of shortening the production cycle and reasonable production process design

Inactive Publication Date: 2012-02-08
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been many researches and efforts in this area abroad. For example, USP 6037106 mentions the use of a water-dispersible subject resin, including polyvinylpyrrolidone, polyurethane resin, polyvinyl alcohol and other resins, in which rosin resin is added Emulsion, defoamer, emulsifier and plasticizer are mixed with water. The cost of this method is high and the adhesive strength of the film after drying is poor.

Method used

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  • Preparation method of redispersible waterborne pressure sensitive rubber latex
  • Preparation method of redispersible waterborne pressure sensitive rubber latex
  • Preparation method of redispersible waterborne pressure sensitive rubber latex

Examples

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example 1

[0025] Add 70 grams of butyl acrylate, 10 grams of vinyl acetate, 10 grams of acrylic acid, and 10 grams of hydroxyethyl acrylate into the Erlenmeyer flask and mix evenly, take out 25% of the mixed solution and 0.4 grams of ammonium persulfate, 0.4 grams of sodium bicarbonate, Add 4 grams of polyvinyl alcohol, 1 gram of n-dodecyl mercaptan, 4 grams of sodium dodecylsulfonate, and 100 grams of deionized water into a three-necked flask equipped with a reflux condenser, stir and heat up to 85 ° C, and react After 30 minutes, slowly add the remaining mixed solution into the three-necked flask over 2 hours, react for 1 hour after the addition, cool down to below 60°C, and adjust the pH to 8 with ammonia water. The reducible water-based pressure-sensitive latex can be obtained.

example 2

[0027] Add 70 grams of isooctyl acrylate, 10 grams of vinyl acetate, 10 grams of acrylic acid, and 10 grams of hydroxyethyl acrylate into the conical flask and mix evenly, take out 25% of the mixed solution, 0.4 grams of ammonium persulfate, and 0.4 grams of sodium bicarbonate , 4 grams of polyvinyl alcohol, 1 gram of n-dodecyl mercaptan, 4 grams of sodium dodecylsulfonate, and 100 grams of deionized water were added to a three-necked flask equipped with a reflux condenser, stirred and heated to 85 ° C, After reacting for 30 minutes, slowly add the remaining mixture into the three-necked flask over 2 hours, and then react for 1 hour after the addition, lower the temperature to below 60°C, and adjust the pH to 8 with ammonia water. The reducible water-based pressure-sensitive latex can be obtained.

example 3

[0029] Add 65 grams of isooctyl acrylate, 5 grams of vinyl acetate, 10 grams of acrylic acid, and 20 grams of hydroxyethyl acrylate into the conical flask and mix evenly, take out 25% of the mixed solution, 0.4 grams of ammonium persulfate, and 0.4 grams of sodium bicarbonate , 4 grams of polyvinyl alcohol, 1 gram of n-dodecyl mercaptan, 4 grams of sodium dodecylsulfonate, and 100 grams of deionized water were added to a three-necked flask equipped with a reflux condenser, stirred and heated to 85 ° C, After reacting for 30 minutes, slowly add the remaining mixture into the three-necked flask over 2 hours, and then react for 1 hour after the addition, lower the temperature to below 60°C, and adjust the pH to 8 with ammonia water. The reducible water-based pressure-sensitive latex can be obtained.

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Abstract

The invention discloses a preparation method of redispersible waterborne pressure sensitive rubber latex. A mixed monomer is added in foundation latex at a constant speed for reacting by adopting a semicontinuous polymerization method to obtain the redispersible waterborne pressure sensitive rubber latex. According to the preparation method disclosed by the invention, the defects of traditional rubber latex are overcome; and in addition, the production process is quite reasonable in design, the production period is shortened and the production efficiency is improved. The pressure sensitive rubber latex has excellent pressure sensitive characteristic under the drying condition, is widely used for laminating and positioning crystallite glass products and the like and can be quickly dissolved, dispersed and cleared once the pressure sensitive rubber latex meets with water; and no trace is reserved on the products.

Description

Technical field: [0001] The invention relates to a preparation method of water-based pressure-sensitive latex, in particular to a preparation method of redispersible water-based pressure-sensitive latex. Background technique: [0002] For the current glass and crystal products, especially sandblasting handicrafts, plate making is required before sandblasting, and the templates made need to be attached to the crystal products and then sandblasting. The glue used to bond the templates and handicrafts is pressure sensitive adhesive. lotion. However, in order to carry out the next step, it is required to remove the film. At this time, the film of conventional water-based pressure-sensitive adhesives is difficult to dissolve in water. When the film is removed, a large number of glue marks will remain on the surface of the product. Large organic solvents to remove. Not only troublesome but also causing harm to people's health. [0003] Therefore, finding an environmentally frie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J7/00C08F220/18C08F218/08C08F220/06C08F220/28C08F2/26C08F2/30
Inventor 庞尧郭爽张亚军解一军
Owner HEBEI UNIV OF TECH
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