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Preparation method of rosin emulsion

A technology of rosin emulsion and rosin, which is applied in the field of rosin deep processing, can solve the problems of high cost, high requirements for equipment and operating conditions, etc., and achieve the goal of overcoming perishable, low requirements for equipment and operating conditions, and avoiding harm to the air and human body Effect

Inactive Publication Date: 2017-03-15
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the high-pressure melting method and ultrasonic emulsification method, not only the equipment and operating conditions are relatively high in the preparation process, but also the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of this rosin emulsion comprises the steps:

[0033] Step S1, mix the emulsifier (2.0g sodium lauryl sulfate and 11.0g Span-80) with 10g deionized water, and prepare an emulsifier solution;

[0034] Step S2, heating 20g of rosin (natural masson pine rosin, produced in Jiangxi) to complete melting, the temperature is controlled at 120°C, then adding emulsifier solution, emulsifying at a stirring speed of 800rpm, and the emulsifying time is 20-30min, so that the rosin emulsion system Form water-in-oil type;

[0035] Step S3, adding 10 g of boiling water dropwise to the rosin emulsion prepared in step S2, and controlling the reaction temperature at 95° C., so that the phase inversion of the rosin emulsion system forms an oil-in-water type;

[0036] Step S4, quickly add 50g boiling water and 0.1g stabilizer (polyvinyl alcohol) to the rosin emulsion prepared in step S3, reduce the stirring speed to 200rpm and rapidly cool to below 30-40°C;

[0037] S...

Embodiment 2

[0039] The preparation method of this rosin emulsion comprises the steps:

[0040] Step S1, mixing the emulsifier (1.5g sodium lauryl sulfate and 7.5g Span-80) with 10g deionized water to prepare an emulsifier solution;

[0041] Step S2. Heat 20g of rosin (natural wetland pine rosin, produced in Jiangxi) until it is completely melted, and the temperature is controlled at 130°C. Then, add an emulsifier solution and emulsify at a stirring speed of 600rpm. The emulsification time is 20-30min, so that the rosin emulsion system Form water-in-oil type;

[0042] Step S3, adding 10 g of boiling water dropwise to the rosin emulsion prepared in step S2, and controlling the reaction temperature at 90° C., so that the rosin emulsion system is phase-inverted to form an oil-in-water type;

[0043] Step S4, quickly add 40g boiling water and 0.1g stabilizer (polyvinyl alcohol) to the rosin emulsion prepared in step S3, reduce the stirring speed to 200rpm and rapidly cool to below 30-40°C;

...

Embodiment 3

[0046] The preparation method of this rosin emulsion comprises the steps:

[0047] Step S1, mixing the emulsifier (1.5g sodium lauryl sulfate and 7.5g Span-80) with 10g deionized water to prepare an emulsifier solution;

[0048] Step S2, heat 20g of rosin (natural masson pine rosin, produced in Hunan) until it is completely melted, and the temperature is controlled at 110°C, then add an emulsifier solution, emulsify at a stirring speed of 700rpm, and the emulsification time is 20-30min, so that the rosin emulsion system Form water-in-oil type;

[0049] Step S3, adding 10 g of boiling water dropwise to the rosin emulsion prepared in step S2, and controlling the reaction temperature at 93° C. to make the phase inversion of the rosin emulsion system to form an oil-in-water type;

[0050] Step S4, quickly add 50g boiling water and 0.15g stabilizer (polyvinyl alcohol) to the rosin emulsion prepared in step S3, reduce the stirring speed to 200rpm and rapidly cool to below 30-40°C; ...

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Abstract

The invention discloses a preparation method of a rosin emulsion. The rosin emulsion is prepared from the following raw materials in parts by weight: 8-40 parts of rosin, 7-12 parts of emulsifier, 0.1-0.5 part of stabilizer and 45-85 parts of deionized water. The method comprises the following steps: uniformly mixing the emulsifier and a proper amount of deionized water to prepare an emulsifier solution; heating the rosin until the rosin is completely molten, adding the emulsifier solution while controlling the temperature at 100-130 DEG C, and emulsifying at the stirring rate of 400-1000 rpm for 15-30 minutes until the rosin emulsion system forms a water-in-oil type; dropwisely adding boiling water, and reacting while controlling the reaction temperature at 80-100 DEG C until the rosin emulsion system is converted into an oil-in-water type; quickly adding the rest boiling water and stabilizer, lowering the stirring rate and quickly cooling to 20-40 DEG C or below; and filtering through a screen to obtain the rosin emulsion finished product. The preparation method disclosed by the invention is simple to operate, has the advantages of environmental protection and lower requirements for equipment and operating conditions, and lowers the production cost. The prepared rosin emulsion has favorable water solubility.

Description

technical field [0001] The invention relates to the technical field of rosin deep processing, in particular to a preparation method of rosin emulsion. Background technique [0002] Rosin is a renewable mixed natural resin, and it is one of the most important products in my country's forestry chemical industry. At present, rosin has been widely used in industrial production as a modifier and additive, which is closely related to its chemical structure. Due to the special structure of rosin, it is easy to crystallize and oxidize to deteriorate during production, storage and use, so rosin is usually further processed. Research on the deep processing of rosin has always been a hot spot at home and abroad. Among them, the use of emulsifiers to emulsify rosin to prepare rosin emulsion is one of the hot research. [0003] Rosin emulsion can be widely used in matching with water-based systems in many application fields, for example, adhesive industry, paper industry, coating indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L93/04
CPCC08J3/03C08J2393/04
Inventor 易争明钱景茹
Owner XIANGTAN UNIV
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