Hot Melt Pressure Sensitive Adhesives
A pressure-sensitive adhesive and hot-melt technology, applied in the direction of adhesives, adhesive additives, rosin adhesives, etc., can solve problems such as high cost and environmental pollution, and achieve the effect of reducing consumption, cost and consumption
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Embodiment 1
[0020] The composition of this hot-melt pressure-sensitive adhesive is: 30 parts of light-colored liquid resin; 90 parts of styrene-ethylene-diene block copolymer; 4 parts of mixed plasticizer; antioxidant N-dibutylamino di Zinc thioformate 2 parts, filler 9 parts.
[0021] 1. Preparation of light-colored liquid resin:
[0022] Refined rosin and fumaric acid accounting for 1.5% of the total mass of the refined rosin are reacted through diene synthesis to obtain fumaric acid modified refined rosin. The reaction temperature is 200°C and the reaction time is 1 hour. Increase the molecular weight of rosin and increase simultaneously Softening point and acid value; add the diethylene glycol that accounts for 11% of described refined rosin gross mass and carry out polyester reaction, introduce the butyric acid that accounts for 0.5% of described refined rosin gross mass in polyester reaction process, temperature of reaction at 250°C and a reaction time of 2 hours to obtain a semi-s...
Embodiment 2
[0026] The composition of this hot-melt pressure-sensitive adhesive is: 40 parts of light-colored liquid resin; 100 parts of styrene-ethylene-diene block copolymer; 5 parts of mixed plasticizer; antioxidant N-dibutylamino di Zinc thioformate 5 parts, filler 10 parts.
[0027] 1. Preparation of light-colored liquid resin:
[0028] Refined rosin and fumaric acid accounting for 2% of the total mass of the refined rosin are reacted through diene synthesis to obtain fumaric acid modified refined rosin. The reaction temperature is 210°C and the reaction time is 2 hours. Increase the molecular weight of rosin and simultaneously increase the Softening point and acid value; add the diethylene glycol that accounts for 12% of described refined rosin gross mass and carry out polyester reaction, introduce the butyric acid that accounts for described refined rosin gross mass 1% in polyester reaction process, temperature of reaction at 260°C, and the reaction time was 3 hours to obtain a se...
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