Alcohol-soluble polyurethane resin used in plastic ink and preparation method thereof
A technology of alcohol-soluble polyurethane and plastic ink, which is applied in ink, application, household appliances, etc. It can solve the problems of not being able to use water, achieve good adhesion, good transferability and fastness of adhesion, and be beneficial to health and safety.
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Example Embodiment
[0029] Example 1 This example provides an alcohol-soluble polyurethane resin for plastic ink, which is made of the following components and their weight parts: 2.5-8 parts of polyester polyol, 20-30 parts of polyether polyol, 5 -10 parts of diisocyanate, 1-5 parts of diamine, 60-66 parts of alcohol diluent, 0.01-0.15 parts of stabilizer.
[0030] The said polyester polyol is a dihydroxy type, which is composed of one or more of adipic acid, phthalic acid, azelaic acid and sebacic acid and 1,4-butanediol and 1,6-hexanediol. It can be obtained by one or several reactions of, the molecular weight is 1000-3000, and the hydroxyl value is 37-112mgKOH / g.
[0031] The polyether polyol is polyoxypropylene glycol with a molecular weight of 1000-3000.
[0032] The diisocyanate is one or more of isophorone diisocyanate (IPDI), 1,6-hexyl isocyanate (HDI), and dicyclohexylmethane diisocyanate (HMDI).
[0033] The diamine is one or more of ethylene diamine, butane diamine, hexamethylene diamine, an...
Example Embodiment
[0048] Example 2
[0049] The alcohol-soluble polyurethane resin for plastic ink and the preparation method thereof provided in this embodiment are basically the same as those in embodiment 1, and the difference lies in:
[0050] A method for preparing the alcohol-soluble polyurethane resin for plastic ink, including the following steps:
[0051] (1) Raw material dehydration
[0052] Weigh the raw materials according to the set ratio, and make the polyester polyol made of adipic acid and 1,4-butanediol into a polyester polyol with a molecular weight M of 1000 and 112mgKOH / g 10.4 G, 63.0 g of polyoxypropylene glycol (M=2000) and 31.2 g of polyoxypropylene glycol (M=1000), heated at 105°C to 110°C, dehydrated for 1-2 hours under the condition of vacuum degree -0.095MPa.
[0053] (2) Synthetic prepolymer
[0054] When the temperature is lower than 60℃, add 0.375g of Antioxidant 264 and 0.25g of Antioxidant 1010 to the reaction kettle, pass nitrogen for protection, then add 31.3g of isophor...
Example Embodiment
[0059] Example 3
[0060] The alcohol-soluble polyurethane resin for plastic ink and its preparation method provided in this embodiment are basically the same as those in Embodiments 1 and 2, except for the following:
[0061] The raw materials weighed according to the set ratio are:
[0062] 22.1 grams of polyester polyol with a molecular weight M of 3000 and a hydroxyl value of 75 mgKOH / g synthesized from sebacic acid and 1,4-butanediol; 68.0 grams of polyoxypropylene glycol (M=2000) and polyoxypropylene two Alcohol (M=1000) 36.2 grams; 0.2 grams of antioxidant 264 and 0.14 grams of antioxidant 1010; 41.7 grams of isophorone diisocyanate; 12.9 grams of isophorone diamine; 136.8 grams of isobutanol and 139 grams of ethanol diluted Agent.
[0063] The alcohol-soluble polyurethane resin for plastic ink prepared in this implementation has an average molecular weight of 25,000 and a solid content of 35%.
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