Hot melt transfer resin composition and preparation method thereof
A resin composition, hot-melt technology, used in rosin adhesives, temperature recording methods, adhesives, etc., can solve the problems of slow production line running speed, rewinding and anti-sticking, and high thermal transfer temperature, and achieve thermal transfer printing. The effect of high speed, high glass transition temperature and low melt viscosity
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[0032] The preparation method of the above-mentioned hot-melt type transfer resin composition specifically comprises the following steps:
[0033] The raw materials are taken according to the above formula ratio (all by mass percentage), including: 10-25% of polyester polyol, 1-4% of tackifying resin, 0.2-0.5% of polyethylene wax powder and 72-85% of Organic solvent; wherein the polyester polyol is composed of 10-20% isophthalic acid, 30-40% 1,4 succinic acid, 10-15% sebacic acid, 20-30% % ethylene glycol and 10-15% neopentyl glycol are polycondensed after esterification. The polyester polyol has a hydroxyl value of 5-15 mgKOH / g, an acid ester of 0.1-0.9 mgKOH / g, and a temperature of 80 ° C. The lower rotational viscosity is 60000~80000mPa·s;
[0034] Mix the polyester polyol, tackifying resin, polyethylene wax powder and organic solvent in the above raw materials at a temperature of 40 to 60°C for 3 to 4 hours to obtain a solid content of 65% to 75%. The product with a rota...
Embodiment 1
[0043] This embodiment provides a hot-melt transfer resin composition, which can be used for thermal transfer films, and endows products with good transferability, scratch resistance and other properties. The resin composition is obtained through the following preparation process:
[0044] (1) prepare polyester polyol, get and prepare each raw material of polyester polyol by following formula in parts by mass:
[0045]
[0046]
[0047] The operation steps of preparing polyester polyol:
[0048] (1) Esterification reaction:
[0049] 18.57 mass parts of isophthalic acid, 33.11 mass parts of 1,4 succinic acid, 13.56 mass parts of sebacic acid, 20.80 mass parts of ethylene glycol, and 13.96 mass parts of neopentyl glycol were added to the polyester synthesis kettle During the process, the temperature of the polyester synthesis kettle was raised to 210-230°C, and the reaction was carried out for 2-3 hours to complete the esterification reaction;
[0050] In the above-menti...
Embodiment 2
[0059] This embodiment provides a hot-melt transfer resin composition, which can be used for thermal transfer films, and endows products with good transferability, scratch resistance and other properties. The resin composition is obtained through the following preparation process:
[0060] (1) prepare polyester polyol, get and prepare each raw material of polyester polyol by following formula in parts by mass:
[0061]
[0062] The operation steps of preparing polyester polyol:
[0063] (1) Esterification:
[0064] Add 10 parts by mass of isophthalic acid, 40 parts by mass of 1,4 succinic acid, 15 parts by mass of sebacic acid, 25 parts by mass of ethylene glycol, and 10 parts by mass of neopentyl glycol to the polyester synthesis In the kettle, heat up to 210-230°C, react for 3 hours, and complete the esterification reaction;
[0065] During the above-mentioned esterification reaction, keep the water output stable at 0.5~1.0% / hour (that is, the water output per hour acco...
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