Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of tackifying resin prepared from rosin oil recovery and its preparation method

A technology of tackifying resin and liquid tackifying resin, which is applied in the direction of rosin adhesive and chemical modification of natural resin, etc., can solve the problems of low added value of the production process and pollute the environment, and achieve high initial tack and acid value Low, improve the effect of initial tack

Active Publication Date: 2019-05-28
江西金安林产实业有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, in the traditional production process, rosin oil is generally directly incinerated to produce heat, and a small part is recycled to prepare low-end paint. This method not only pollutes the environment, but also reduces the overall added value of the production process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of tackifying resin prepared by rosin oil recovery, adopts following method to prepare:

[0030] (1) 1000 parts by weight of rosin oil with an acid value of 35.6mgKOH / g are added to the reaction flask, and 100 parts by weight of 1%wt potassium hydroxide solution is added. After stirring for 20 minutes, the rosin oil is washed and moved to a separatory funnel for static Put layers to remove the water layer, repeat washing 5 times until the pungent smell of rosin oil is not obvious;

[0031] (2) add distilled water to the rosin oil obtained in step (1) and wash to neutrality, and leave to separate and remove the water layer;

[0032] (3) Add 2%wt alumina to the rosin oil obtained in step (2), let it stand for adsorption, and filter to obtain the rosin oil without pungent smell;

[0033] (4) Put the rosin oil obtained in step (3) and the acrylic acid equivalent to 5% of the weight of rosin oil into a reaction kettle equipped with a thermometer, a stirrer and a cond...

Embodiment 2

[0036] A kind of tackifying resin prepared by rosin oil recovery, adopts following method to prepare:

[0037] (1) 2000 parts by weight of rosin oil with an acid value of 35.6mgKOH / g are added to the reaction flask, add 200 parts by weight of 3%wt sodium carbonate solution, stir for 25 minutes to wash the rosin oil, and move to the separatory funnel to leave standstill Remove the water layer layer by layer, repeat washing 5 times until the pungent smell of rosin oil is not obvious;

[0038] (2) add distilled water to the rosin oil obtained in step (1) and wash to neutrality, and leave to separate and remove the water layer;

[0039] (3) add 4%wt diatomite to the rosin oil obtained in step (2), let it stand for adsorption, and filter to obtain the rosin oil without pungent smell;

[0040] (4) Put the rosin oil obtained in step (3) and fumaric acid equivalent to 9% of the weight of rosin oil into a reaction kettle equipped with a thermometer, agitator and condenser, stir and mi...

Embodiment 3

[0044] A kind of tackifying resin prepared by rosin oil recovery, adopts following method to prepare:

[0045] (1) 2000 parts by weight of rosin oil with an acid value of 35.6mgKOH / g are added to the reaction flask, add 200 parts by weight of 5%wt sodium hydroxide solution, stir for 30 minutes to wash the rosin oil, move to a separatory funnel Put layers to remove the water layer, repeat washing 5 times until the pungent smell of rosin oil is not obvious;

[0046] (2) add distilled water to the rosin oil obtained in step (1) and wash to neutrality, and leave to separate and remove the water layer;

[0047] (3) add the gac of 6%wt in the rosin oil that step (2) obtains, let stand to absorb, filter to obtain the rosin oil without pungent smell;

[0048] (4) the rosin oil that step (3) obtains and the maleic anhydride that is equivalent to 13% of rosin oil weight drop into the reactor that thermometer, agitator and condenser tube are equipped with, stir and mix evenly, react at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
acid valueaaaaaaaaaa
viscosityaaaaaaaaaa
acid valueaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing tackifying resin from reclaimed rosin oil. Firstly, the rosin oil is washed and then adsorbed, and then reacted with a dienophile to obtain an adduct. After the adduct is heated, the adduct is subjected to vacuum distillation to obtain a liquid At the same time, the invention discloses a tackifying resin prepared by the above method, which solves the problems of environmental pollution and resource waste caused by rosin oil in the production process of rosin esterification, and improves the added value of rosin oil products.

Description

technical field [0001] The invention relates to the technical field of rosin resin and adhesive, in particular to a tackifying resin prepared from reclaimed rosin oil and a preparation method thereof. Background technique [0002] my country is the largest producer of rosin in the world, with an annual output of about 400,000 to 500,000 tons, accounting for more than 60% of global rosin production. Because rosin is brittle, easy to crystallize, not resistant to aging, and has high acid value, it usually needs to be used after chemical modification. Esterification of rosin is one of the important means of rosin modification. [0003] When producing rosin ester and its modified products, some distillates are discharged after being cooled by the condenser. From the appearance, the discharge is light brownish red, slightly transparent, and has a pungent burnt smell. If the distillate is left open in the air for a long time, it will be oxidized and turn red; the distillate can ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09F1/04C09J193/04
CPCC09F1/04C09J193/04
Inventor 许健兴曾昭君李红兰徐社阳
Owner 江西金安林产实业有限公司