Method of preparing esterified substance by rosin and hydroxyl acrylate

Abstract

The invention discloses a preparing method of esterified matter with rosin and acroleic acid hydroxy ester, which comprises the following steps: (1) heating 100 wt rosin; melting; adding into 0.1-2 wt esterification catalysts and 0.01-2 wt hydroquinone inhibitor; (2) adding into 1-50 wt acroleic acid hydroxy ester; reacting under 200-250 deg.c at 1-8 h; cooling; adding into 10-150 wt aromatic solvent; dissolving the product; filtering; vacuum-distilling; removing dissolvent; getting thick rosin and acroleic acid hydroxy ester. This invention possesses simple method and high conversion rate, which can be used to paint, ink, adhesives and photo resist.

Description

technical field

[0001] The invention relates to a method for preparing esterified products by utilizing rosin and acrylate hydroxyl ester. technical background

[0002] Rosin is a mixture of various resin acids and a small amount of fatty acids and neutral substances, of which resin acid (abietic acid) is the main component, accounting for more than 90% of the total amount, resin acid is a class of molecular formula C 19 h 29 The general term for the isomers of COOH, they all have a three-membered ring phenanthrene frame structure, two double bonds and a carboxyl group. Rosin has many excellent properties such as anti-corrosion, insulation, and adhesion, but it also has many shortcomings: such as a large crystallization tendency, easy to be oxidized by oxygen in the atmosphere, and high acid value, etc., thus limiting its use.

[0003] In order to overcome the above shortcomings, it is necessary to modify the rosin. The modification of rosin mainly focuses on some special...

Examples

Embodiment 1

[0022] A method for preparing esterified products with rosin and hydroxyethyl methacrylate, comprising the following steps: 1. Add 1 part of esterification catalyst zinc oxide and 0.2 part of polymerization inhibitor hydroquinone after heating and melting 100 parts of quality rosin 2. Add 45 parts of hydroxyethyl methacrylate to the above system, react at 200°C for 8 hours, cool down, add 100 parts of toluene solvent to dissolve the product, filter, and distill off the solvent under reduced pressure to obtain a viscous Rosin and hydroxyethyl methacrylate esterification.

Embodiment 2

[0024] A method for preparing esterified products with hydrogenated rosin and hydroxypropyl acrylate, comprising the following steps: 1. After heating and melting 100 parts of hydrogenated rosin by quality, add 0.5 part of esterification catalyst zinc acetate and 0.5 part of polymerization inhibitor hydroquinone 2. Add 40 parts of hydroxypropyl acrylate to the above system, react at 220°C for 7 hours, lower the temperature, add 50 parts of benzene to dissolve the product, filter, and distill off the solvent under reduced pressure to obtain viscous hydrogenated rosin Esterates with hydroxypropyl acrylate.

Embodiment 3

[0026] A method for preparing esterified products with disproportionated rosin and hydroxyethyl acrylate, comprising the following steps: 1. After heating and melting 100 parts of disproportionated rosin, add 0.1 part of esterification catalyst zinc chloride and 1 part of polymerization inhibitor terephthalate Phenol; 2. Add 10 parts of hydroxyethyl acrylate to the above system, react at 230°C for 6 hours, cool down, add 10 parts of xylene to dissolve the product, filter, and distill off the solvent under reduced pressure to obtain a viscous Disproportionated rosin and hydroxyethyl acrylate ester.

technical field

[0001] The invention relates to a method for preparing esterified products by utilizing rosin and acrylate hydroxyl ester. technical background

[0002] Rosin is a mixture of various resin acids and a small amount of fatty acids and neutral substances, of which resin acid (abietic acid) is the main component, accounting for more than 90% of the total amount, resin acid is a class of molecular formula C 19 h 29 The general term for the isomers of COOH, they all have a three-membered ring phenanthrene frame structure, two double bonds and a carboxyl group. Rosin has many excellent properties such as anti-corrosion, insulation, and adhesion, but it also has many shortcomings: such as a large crystallization tendency, easy to be oxidized by oxygen in the atmosphere, and high acid value, etc., thus limiting its use.

[0003] In order to overcome the above shortcomings, it is necessary to modify the rosin. The modification of rosin mainly focuses on some special...

Examples

Embodiment 1

[0022] A method for preparing esterified products with rosin and hydroxyethyl methacrylate, comprising the following steps: 1. Add 1 part of esterification catalyst zinc oxide and 0.2 part of polymerization inhibitor hydroquinone after heating and melting 100 parts of quality rosin 2. Add 45 parts of hydroxyethyl methacrylate to the above system, react at 200°C for 8 hours, cool down, add 100 parts of toluene solvent to dissolve the product, filter, and distill off the solvent under reduced pressure to obtain a viscous Rosin and hydroxyethyl methacrylate esterification.

Embodiment 2

[0024] A method for preparing esterified products with hydrogenated rosin and hydroxypropyl acrylate, comprising the following steps: 1. After heating and melting 100 parts of hydrogenated rosin by quality, add 0.5 part of esterification catalyst zinc acetate and 0.5 part of polymerization inhibitor hydroquinone 2. Add 40 parts of hydroxypropyl acrylate to the above system, react at 220°C for 7 hours, lower the temperature, add 50 parts of benzene to dissolve the product, filter, and distill off the solvent under reduced pressure to obtain viscous hydrogenated rosin Esterates with hydroxypropyl acrylate.

Embodiment 3

[0026] A method for preparing esterified products with disproportionated rosin and hydroxyethyl acrylate, comprising the following steps: 1. After heating and melting 100 parts of disproportionated rosin, add 0.1 part of esterification catalyst zinc chloride and 1 part of polymerization inhibitor terephthalate Phenol; 2. Add 10 parts of hydroxyethyl acrylate to the above system, react at 230°C for 6 hours, cool down, add 10 parts of xylene to dissolve the product, filter, and distill off the solvent under reduced pressure to obtain a viscous Disproportionated rosin and hydroxyethyl acrylate ester.