Thermoplasticity mixed alkylphenol phenolic resin for printing ink and preparation method thereof
A technology of phenolic resin and alkylphenol, which is applied in the field of thermoplastic mixed alkylphenol phenolic resin for ink, can solve the problem of low free phenol content, achieve good storage stability, excellent physical and chemical resistance, and moderate fixation time.
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Example Embodiment
[0054] Example 1
[0055]Add 56 g of p-tert-butylphenol, 27 g of p-tertylphenol, 44 g of 37% formaldehyde solution and 3.2 g of oxalic acid into a 250ml three-necked flask, heat it to melt, turn on stirring after melting, and increase the temperature at 110°C. After reacting for 2 hours, the low-boiling small molecular substances are removed by vacuum, and the material is discharged after the temperature reaches 130°C to obtain a mixed alkylphenol phenolic resin.
[0056] The color number of the obtained resin is No. 4; the softening point of the resin is 115°C; the molecular weight: Mn=910, Mw / Mn=1.4; the free p-tert-butylphenol content is 1.13%, and the free p-tert-butylphenol content is 2.57%; n-heptane tolerance: >100mL / 2g.
[0057] Examples of binder prepared by using the resin of the present invention, linseed oil, and n-heptane:
[0058] Component weight percentage
[0059] Phenolic resin of the present invention 55%
[0060] Linseed oil 30%
[0061] Petroleum solvent (dist...
Example Embodiment
[0075] Example 2
[0076] Add 50g of p-tert-butylphenol, 18g of p-dodecylphenol, 32.5g of formaldehyde solution with a weight concentration of 37% and 0.34g of hydrochloric acid into a 250ml three-necked flask, heat it to melt, turn on the stirring and increase the temperature after melting. Under the conditions, after reacting for 3 hours, the low-boiling-point small-molecule substances are removed by vacuuming, and the material is discharged after the temperature reaches 200°C to obtain a mixed alkylphenol phenolic resin.
[0077] The color number of the obtained resin is No. 6; the softening point of the resin is 98°C; the molecular weight: Mn=834, Mw / Mn=1.3; the content of free p-tert-butylphenol is 2.45%, and the content of free p-dodecylphenol It is 1.25%; n-heptane tolerance: >100mL / 2g.
[0078] Examples of binder prepared by using the resin of the present invention, linseed oil, and n-heptane:
[0079] Component weight percentage
[0080] Phenolic resin of the present inve...
Example Embodiment
[0097] Example 3
[0098] Add 53g of p-tert-butylphenol, 20g of p-tertylphenol, 10g of cardanol, 20g of paraformaldehyde and 0.42g of p-toluenesulfonic acid into a 250ml three-necked flask, heat it to melt, turn on stirring after melting, and increase the temperature at 100℃ Under the conditions of 4 hours of reaction, the low-boiling small molecular substances are removed by vacuuming, and the material is discharged after the temperature reaches 210°C to obtain a mixed alkylphenol phenolic resin.
[0099] The color number of the obtained resin is No. 9; the softening point of the resin is 96°C; the molecular weight: Mn=870, Mw / Mn=1.6; the free p-tert-butylphenol content is 1.40%, and the free p-tert-butylphenol content is 2.11%; n-heptane tolerance: >100mL / 2g.
[0100] Examples of binder prepared by using the resin of the present invention, linseed oil, and n-heptane:
[0101] Component weight percentage
[0102] Phenolic resin of the present invention 52%
[0103] Soybean oil 3%...
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