Vegetable oil modified rosin phenolic resin and preparation method thereof

A rosin phenolic resin and vegetable oil modification technology, which is applied in the directions of printing ink, household appliances, and application, can solve the problems of low heptane tolerance, difficult to reach softening point, low n-heptane value, etc., and achieves improved solubility, Remarkable environmental protection effect, the effect of improving solubility

Inactive Publication Date: 2013-02-06
山西省应用化学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN1341673A reported a preparation process of rosin-modified mixed alkylphenol-formaldehyde resin, the prepared resin has high gloss and good emulsification resistance, but the n-heptane value is low and the solubility is poor
However, because the resin contains

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] Take 185.4g of p-tertylphenol, 14g of NaOH and 100g of toluene, add them to a 1000mL four-necked reaction flask with a condenser, heat to melt to a translucent state, cool to 60 ℃, slowly add 153g of 37% formaldehyde dropwise. After the reaction was kept at 80℃ for 4 hours, cooled to 50℃, neutralized with 10% hydrochloric acid solution to pH=6, allowed to stand for layering, washed the organic layer twice with water, discarded the water layer, and distilled under reduced pressure to obtain alkyl phenolic resin condensation Material (condensation liquid) 320g.

[0024] Add 302g of rosin and 30g of tung oil into a 1000mL four-necked reaction flask, heat to melt and then raise the temperature to 185°C, slowly add 320g of the condensation liquid, dropwise within 2.5 hours, add 0.6g of ZnO, stir evenly, slowly add 30g of glycerol at 220°C, After the addition, it was kept at 230°C for 2 hours, and the temperature was raised to 250°C to react until the acid valu...

Example Embodiment

[0025] Example 2

[0026] Take 220g of p-nonylphenol, 17g of NaOH and 140g of toluene, add them to a 1000mL four-necked reaction flask with a condenser, heat to melt to a translucent state, cool to 60 ℃, slowly add 170g of 37% formaldehyde dropwise. The reaction was kept at 75°C for 5 hours, cooled to 50°C, neutralized to pH=6 with 10% hydrochloric acid solution, left to stand for separation, washed the organic layer twice with water, discarded the water layer, and distilled under reduced pressure to obtain alkylphenolic resin condensate ( Condensation liquid) 400g.

[0027] Add 302g of rosin and 70g of linseed oil into a 1000mL four-necked reaction flask, heat to melt and then raise the temperature to 190℃, slowly add 400g of condensation liquid, drip in 3 hours, add 0.6gMgO, stir well, slowly add 37g of pentaerythritol at 220℃ After the addition, keep at 230°C for 2 hours, heat up to 270°C to react until the acid value is less than 25mgKOH / g, and obtain 560g of vegetable oil mod...

Example Embodiment

[0028] Example 3

[0029] Take 48g of p-tert-butylphenol, 132g of p-tert-octylphenol, 9g of NaOH and 130g of toluene, add them to a 1000mL four-necked reaction flask with a condenser, heat to melt to a translucent state, cool to 60 ℃, and add slowly 160g of 37% formaldehyde, after the addition, keep the reaction at 70°C for 6 hours, lower the temperature to 50°C, neutralize with 10% hydrochloric acid solution to pH=6, let stand for layering, wash the organic layer twice with water, discard the water layer, and reduce pressure 350g of alkylphenolic resin condensate (condensation liquid) is obtained by distillation.

[0030] Add 302g of rosin and 60g of castor oil into a 1000mL four-necked reaction flask, heat to melt and then raise the temperature to 190℃, slowly add 350g of condensate liquid, after 2.5 hours, add 0.6g of ZnO, stir evenly, slowly add 37g of pentaerythritol at 220℃ After the addition, keep at 230°C for 2 hours, heat up to 270°C to react until the acid value is less ...

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Abstract

The invention discloses vegetable oil modified rosin phenolic resin and a preparation method thereof. Alkyl phenol reacts with formaldehyde under an alkaline condition to obtain an alkyl phenol resin condensation compound; molten rosin and vegetable oil are firstly used to conduct a Diels-Alder addition reaction; then the alkyl phenol resin condensation compound is dripped into a reaction product of the molten rosin and the vegetable oil to conduct a Diels-Alder addition reaction; and finally, after a final reaction product is esterified, the vegetable oil modified rosin phenolic resin is prepared. The preparation method has the advantages that through the Diels-Alder reaction of the rosin and the vegetable oil, an aliphatic chain is led to a molecular structure, so that the solubility of the rosin phenolic resin in mineral oil is effectively improved, and a softening point of the resin is guaranteed at the same time; the n-heptane accommodation degree is larger than or equal to 20mL/2g and the acid value is smaller than or equal to 25mgKOH/g, so that the vegetable oil modified rosin phenolic resin can serve as matrix resin of heat-set ink and satisfies the requirements of fast drying, high gloss, demulsibility, and the like of the heat-set ink.

Description

technical field [0001] The invention relates to a phenolic resin for ink, in particular to a high heptane tolerance rosin phenolic resin for thermosetting offset printing ink, and a preparation method of the phenolic resin. Background technique [0002] The resins used in offset printing inks are mainly rosin-modified phenolic resins. For many years, the country has been using a two-step production process to process such resins, that is, firstly prepare phenolic resins with alkylphenols and formaldehyde, and then react the resins with rosin and polyols together. Preparation of rosin modified phenolic resin. The ink produced with this kind of resin has the characteristics of good adhesion and good body bone. [0003] With the development of today's printing industry, the printing speed continues to increase, requiring heat-set offset printing inks to have the characteristics of high softening point, high viscosity, and high heptane tolerance. However, as the softening poin...

Claims

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Application Information

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IPC IPC(8): C08G8/34C08G8/32C09D11/10C09D11/103
Inventor 李萍吴建兵马国章侯彩英原丽平刘伟
Owner 山西省应用化学研究所
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