Viscosifier, binder or adhesive composition
A tackifier and treatment technology, applied in the direction of adhesives, polymer adhesive additives, adhesive types, etc., can solve the problems of decreased cohesion, poor compatibility, and poor balance of adhesive performance, etc. Low polymerization inhibition and good light resistance
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manufacture example 1
[0049] Production example 1 (production of solvent-based acrylic polymer)
[0050] After adding 50 parts of ethyl acetate to a reaction device equipped with a stirring device, a cooling tube, two dropping funnels and a nitrogen gas introduction tube, the temperature was raised to about 75° C. under nitrogen flow. Then, add 48.5 parts of butyl acrylate, 48.5 parts of 2-ethylhexyl acrylate, 3 parts of acrylic acid into the dropping funnel and add 0.1 parts of azobisisobutyronitrile and 30 parts of ethyl acetate In the funnel, it takes about 2 hours to drop into the system, and then keep at the same temperature for 5 hours to complete the polymerization reaction. Ethyl acetate was added to adjust the solid content to about 50%, and an acrylic polymer-containing composition was obtained.
manufacture example 2
[0051] Production example 2 (production of rosin ester 1)
[0052] (1st hydrogenation reaction)
[0053] Add 200g of Chinese hydrogenated rosin, 3g of 5% palladium alumina powder (manufactured by N.E.CHEMCAT) and 200g of cyclohexane into a 1-liter autoclave. ℃. After reaching this temperature, the system was repressurized and kept at 9 MPa for hydrogenation reaction for 4 hours. After the solvent was filtered off, cyclohexane was removed under reduced pressure to obtain 189 g of hydrogenated rosin with an acid value of 174 and a softening point of 79°C.
[0054] (esterification reaction)
[0055] Next, 180 g of hydrogenated rosin was added to a reaction device equipped with a stirring device, a cooling pipe, and a nitrogen gas introduction pipe, and after melting to 200° C., 21 g of glycerin was added and reacted at 280° C. for 10 hours. 175 g of hydrogenated rosin esters having a softening point of 90° C. and an acid value of 11 were obtained.
[0056] (Second hydrogenati...
manufacture example 3
[0058] Production example 3 (production of rosin ester 2)
[0059] (1st hydrogenation reaction)
[0060] Except that the amount of 5% palladium alumina powder was changed to 2 g and the hydrogenation reaction time was changed to 3 hours, 191 g of rosin with an acid value of 175 and a softening point of 79° C. was obtained in the same manner as in Production Example 2.
[0061] (esterification reaction)
[0062] 175 g of rosin esters having a softening point of 91° C. and an acid value of 12 were obtained in the same manner as in Production Example 2 except that 180 g of rosin having an acid value of 175 and a softening point of 79° C. obtained by the first hydrogenation was used.
[0063] (Second hydrogenation reaction)
[0064] 163 g of rosin ester 2 having an acid value of 12, a softening point of 92° C., and a hydroxyl value of 18 was obtained in the same manner as in Production Example 2 except that 170 g of rosin ester having a softening point of 91° C. and an acid valu...
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Abstract
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