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Modified rosin tackifying resin as well as preparation method and application thereof

A tackifying resin and modified rosin technology, applied in rosin adhesives, applications, rosin coatings, etc., can solve the problems of application limitations, high equipment requirements, high softening point of resin, etc., and achieve better wettability and adhesion , wide range of applications, good compatibility

Active Publication Date: 2013-03-20
广东科茂林产化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above method to produce dicyclopentadiene modified rosin resin mainly has the following disadvantages: first, the pressure is high during production, and the requirements for equipment are high; second, the product has a deep color and can only be used in places where the color requirements are low, such as ink. , in the field of adhesives, the resin itself must have good compatibility with the main elastomer material of the adhesive, and the disadvantage of poor compatibility between the resin and polyolefins limits its application in this field; the third is that the resin has a high softening point. Applications in adhesives are also limited

Method used

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  • Modified rosin tackifying resin as well as preparation method and application thereof
  • Modified rosin tackifying resin as well as preparation method and application thereof
  • Modified rosin tackifying resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Add 365 grams of rosin, 0.37 grams of 300, 275 grams of dicyclopentadiene fraction with a dicyclopentadiene content of 83wt%, and 33.73 grams of turpentine in a high-pressure reactor with a volume of 1 L. The temperature is raised to 265 ° C within 2 hours, and the pressure is 0.52Mpa , reacted for 2 hours, decompressed, flashed to remove low boiling point substances, then cooled to 220 ° C, added 0.36 grams of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 0.36 gram of tris(2,4-di-tert-butylphenyl)phosphite, and stirred for 10 minutes to release to obtain modified rosin tackifying resin. The softening point of the resin is 93°C, acid value: 34.2 (mgKOH / g), color: Garner color 3.5, cloud point (1:1Affinity GA1950) <25°C.

Embodiment 2

[0037] Add 365 grams of rosin and 0.9 grams of ROSINOX to a 1L autoclave TM , 275 grams of dicyclopentadiene fractions with a dicyclopentadiene content of 83wt%, 45 grams of turpentine, heated to 265 ° C within 2 hours, and the pressure was 0.52Mpa, reacted for 5 hours, decompressed, flashed to remove low boiling point substances, and then cooled to 220°C, add 0.73 g tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 1.1 g tris(2,4-di-tert-butylphenyl) phosphite , Stir for 10 minutes to release, to obtain modified rosin tackifying resin. The softening point of the resin is 94°C, acid value: 35.3 (mgKOH / g), color: Garner color 4, cloud point (1:1Affinity GA1950) <25°C.

Embodiment 3

[0039] Add 300 grams of rosin and 0.9 grams of ROSINOX to a 1L autoclave TM , 335 grams of dicyclopentadiene fractions with a dicyclopentadiene content of 83wt%, 45 grams of turpentine, heated to 265 ° C within 2 hours, and the pressure was 0.55Mpa, reacted for 3.5 hours, decompressed, flashed to remove low boiling point substances, and then cooled to 220°C, add 0.6 g tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 0.3 g tris(2,4-di-tert-butylphenyl) phosphite , Stir for 10 minutes to release, to obtain modified rosin tackifying resin. The resin has a softening point of 105°C, an acid value of 21.3 (mgKOH / g), a color of Garner color 4+, and a cloud point (1:1 AffinityGA1950) of 32°C.

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Abstract

The invention relates to modified rosin resin and discloses modified rosin tackifying resin as well as a preparation method and application thereof. The preparation method comprises the following steps of: uniformly mixing rosin or rosin derivatives, monoterpene compounds, dicyclopentadiene fractions and catalysts in an autoclave; replacing air in the autoclave by use of nitrogen or carbon dioxide; reacting the mixture at a pressure of 0.2-0.6 Mpa and at 170-290 DEG C for 1 hour to 30 hours; and decompressing after the reaction, and removing low-boiling-point substances, thus obtaining the modified rosin tackifying resin, or adding an antioxidant stabilizer into the mixture at 200-230 DEG C, thus obtaining the modified rosin tackifying resin with higher quality. The softening point of the modified rosin tackifying resin ranges from 80 DEG C to 110 DEG C, the acid value of the tackifying resin is 15-70mg KOH per gram, and the color of the tackifying resin is less than No.6 Ghana color. The modified rosin tackifying resin can be widely applied to the field of tackifiers, coating paint, printing ink and the like, and especially can be applied to the field of metallocene catalysis polyolefin tackifiers.

Description

technical field [0001] The invention relates to a modified rosin resin, in particular to a modified rosin tackifying resin and its preparation method and application. Background technique [0002] my country is rich in pine resources, and the rosin it produces is the most important product of my country's forestry chemical industry, and it is also a pillar industry. Rosin resin is a resin obtained by reacting rosin or modified rosin with alcohol or other modified materials. Modified rosin resin has been widely used in hot melt adhesives, pressure sensitive adhesives, shoe adhesives, laminating adhesives, sealants; rosin esters It can also be used as a modifier for rubber and plastics. [0003] The main components of hot melt adhesives are main polymers, tackifying resins, viscosity modifiers and fillers, etc., and their classification is mainly based on different main polymers. The most popular hot melt adhesives are EVA (ethylene-vinyl acetate copolymer) and styrene block...

Claims

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Application Information

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IPC IPC(8): C08L93/04C08K5/134C08K5/526C09F1/04C09J193/04C09D193/04C09D11/08
Inventor 沈亮升徐社阳范德明
Owner 广东科茂林产化工股份有限公司
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