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Tackifying resin and preparation method and application thereof

A technology of tackifying resin and rosin resin, applied in chemical modification of natural resin, rosin adhesive, etc., can solve the problems of poor adhesion of surface energy materials, poor water resistance, etc., and achieve low surface tension, cost reduction, viscosity-temperature coefficient small effect

Active Publication Date: 2019-04-16
广东省邦得利新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent with publication number CN107254023A utilizes double bonds in rosin to prepare modified rosin tackifying resin through the method of melt grafting of acrylic acid series monomers. , mainly to improve the compatibility of water-based rosin emulsion in water-based acrylic emulsion, so its water resistance is poor and its adhesion to low surface energy materials is poor
Moreover, it has not been reported that rosin resin is prepared by modifying rosin resin through esterification with hydroxyl-containing silane

Method used

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  • Tackifying resin and preparation method and application thereof
  • Tackifying resin and preparation method and application thereof
  • Tackifying resin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The tackifying resin of this embodiment is prepared from the following parts by weight of raw materials:

[0042]

[0043] The specific preparation steps of the tackifying resin are as follows:

[0044] (1) Weigh the above raw materials by weight:

[0045] (2) Crush the rosin resin, add the pulverized rosin resin, antioxidant, nitrogen gas, stir to dissolve, and heat to 120°C for complete dissolution in a drying reactor equipped with a thermometer, agitator, and reflux condenser;

[0046] (3) Add catalyst and disperse for another 5 minutes, then add alcohol to react for 30 minutes, and the temperature is controlled at 250-270℃;

[0047] (4) Add hydroxysilane dropwise to start the esterification reaction, the temperature is controlled at 250-270°C, the dropwise addition is completed in 4 hours, and the temperature is kept for 1.5 hours;

[0048] (5) Vacuum (20mmHg) to reduce pressure to distill out low-boiling components;

[0049] (6) Cooling and discharging.

[0050] The tackifying ...

Embodiment 2

[0052] The tackifying resin of this embodiment is prepared from the following parts by weight of raw materials:

[0053]

[0054] The specific preparation steps of the tackifying resin are as follows:

[0055] (1) Weigh the above raw materials by weight;

[0056] (2) Crush the rosin resin, add the pulverized rosin resin to a drying reactor equipped with a thermometer, agitator, and reflux condenser, stir and dissolve the antioxidant, pass nitrogen, and heat to 70°C to completely dissolve;

[0057] (3) Add catalyst and disperse for 5 minutes;

[0058] (4) Add hydroxysilane dropwise to start the esterification reaction, the temperature is controlled at 240-260°C, the dropwise addition is completed in 4 hours, and the temperature is kept for 1.5 hours;

[0059] (5) Vacuum (20mmHg) to reduce pressure to distill out low-boiling components;

[0060] (6) Cooling and discharging.

[0061] The tackifying resin prepared in this embodiment can be used directly as a hot melt adhesive, or as a tackifie...

Embodiment 3

[0063] The tackifying resin of this embodiment is prepared from the following parts by weight of raw materials:

[0064]

[0065] The specific preparation steps of the tackifying resin are as follows:

[0066] (1) Weigh the above raw materials by weight;

[0067] (2) Crush the rosin resin, add the pulverized rosin resin to a drying reactor equipped with a thermometer, agitator, and reflux condenser, stir and dissolve the antioxidant, pass nitrogen, and heat to 100°C to completely melt;

[0068] (3) Add catalyst and disperse for 5 minutes;

[0069] (4) Add hydroxysilane dropwise to start the esterification reaction, the temperature is controlled at 200-220°C, the dropwise addition is completed in 3 hours, and the temperature is kept for 1 hour;

[0070] (5) Vacuum (20mmHg) to reduce pressure to distill out low-boiling components;

[0071] (6) Cooling and discharging.

[0072] The tackifying resin prepared in this embodiment can be used directly as a hot melt adhesive, or as a tackifier for ...

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Abstract

The invention provides tackifying resin. The tackifying resin is characterized by being prepared from, by weight, 100 parts of rosin resin, 0.1-80 parts of hydroxyl silane, 0-50 parts of alcohol, 0.2-0.4 part of a catalyst and 0.3-0.6 part of an antioxidant. The invention further provides a preparation method and application of the tackifying resin. The preparation method includes the following steps that 1, the raw materials are weighed; 2, the rosin resin is smashed, the antioxidant is added, stirring is conducted to dissolve the rosin resin, and heating is conducted until the rosin resin iscompletely dissolved; 3, the catalyst is added and disperses for 5 minutes, and then alcohol is added to react for 30 minutes; 4, hydroxyl silane is added dropwise to start esterification reaction; 5, when no water is discharged any more, vacuum decompression is conducted to distill off fractions with low boiling points; 6, cooling is conducted to discharge the tackifying resin. The tackifying resin has excellent bonding performance for materials with low surface energy, can independently serve as hot melt adhesive resin, can also be added into other hot melt adhesive systems to serve as a tackifying agent to be in mixed usage and can serve as a compatilizer in the hot melt adhesive systems.

Description

Technical field [0001] The invention relates to the technical field of polymer materials and their preparation, in particular to a tackifying resin and its preparation method and application. Background technique [0002] Because of its environmental protection characteristics, the development and application of hot melt adhesives are increasing, and a variety of hot melt resins and additives are used in the formulation system of hot melt adhesives. Rosin is a natural resin secreted from pine trees or pine tree trunks. Rosin can be obtained after refining. Rosin is a more complex mixture consisting of resin acids (abietic acid, pimaric acid), a small amount of fatty acids, rosin anhydride and neutrals. The main component of rosin is resin acid, which is an unsaturated acid, so rosin contains active functional groups such as conjugated double bonds and carboxyl groups, which has strong reactivity. The product after the esterification reaction of rosin and glycerin is the most wid...

Claims

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Application Information

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IPC IPC(8): C09F1/04C09J193/04
CPCC09F1/04C09J193/04
Inventor 余记乐李正珂孙奕飞陈竞旭宋学臣
Owner 广东省邦得利新材料技术有限公司
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