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One-step method environmentally-friendly resin and production technology thereof

An environmentally friendly resin and preparation technology, applied in applications, inks, household appliances, etc., can solve the problems of environmental pollution, waste water containing large formaldehyde, waste of water resources, etc., achieve high softening point, save water resources, and save production costs Effect

Inactive Publication Date: 2017-03-15
TIANJIN ANGUANG INK FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional resin in ink is produced by two-step method. During the production process, the phenolic resin needs to be washed with water, resulting in a large amount of waste water containing formaldehyde, which wastes water resources and pollutes the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 600g of rosin and 70g of tung oil into a 1000mL three-necked bottle, heat and melt, start stirring and add 200g of cardanol and 1g of magnesium oxide; drop to 120°C and add 70g of paraformaldehyde, react at 112-116°C for 4 hours; heat up to 190°C ℃, add 6g maleic anhydride and keep warm for 15 minutes, heat up to 220°C, add 30g glycerin, keep warm for 1 hour, heat up to 230°C, add 25g pentaerythritol, keep warm for 1 hour, keep warm at 260±5°C for 3 hours, take samples to measure acid value 28 mgKOH / g, viscosity 6800mpa.s / 25°C, depressurize to 300-400mmHg and distill for 1 hour; after testing, the softening point of the product is 164°C, acid value 19.5 mgKOH / g, viscosity 8800mpa.s / 25°C, n-heptane value 5.6ml / 2g.

Embodiment 2

[0035] Weigh 600g of rosin and 70g of tung oil into a 1000mL three-neck bottle, heat and melt, start stirring and add 220g of cardanol and 1g of magnesium oxide; drop to 120°C and add 80g of paraformaldehyde, react at 112-116°C for 4 hours; heat up to 190°C ℃, add 6g maleic anhydride and keep warm for 15 minutes, heat up to 220°C, add 30g glycerin, keep warm for 1 hour, heat up to 230°C, add 25g pentaerythritol, keep warm for 1 hour, keep warm at 260±5°C for 3 hours, take samples to measure acid value 25 mgKOH / g, viscosity 7500mpa.s / 25°C, depressurize to 300-400mmHg and distill for 1 hour; after testing, the softening point of the product is 167°C, acid value 16.8 mgKOH / g, viscosity 10600mpa.s / 25°C, n-heptane value 5.8ml / 2g.

Embodiment 3

[0037] Weigh 550g of rosin and 90g of tung oil into a 1000mL three-necked bottle, heat and melt, start stirring and add 170g of cardanol and 2g of magnesium oxide; drop to 120°C and add 60g of paraformaldehyde, react at 112-116°C for 4 hours; heat up to 190°C ℃, add 5g maleic anhydride and keep it warm for 15 minutes, raise the temperature to 220°C, add 50g glycerin, keep it warm for 1 hour, raise the temperature to 230°C, add 30g of pentaerythritol, keep it warm for 1 hour, keep it at 260±5°C for 3 hours, take a sample to measure the acid value 27 mgKOH / g, viscosity 6500mpa.s / 25°C, depressurize to 300-400mmHg and distill for 1 hour; after testing, the softening point of the product is 162°C, acid value 20.5 mgKOH / g, viscosity 8300mpa.s / 25°C, n-heptane value 5.4ml / 2g.

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Abstract

The invention belongs to the field of resin for the printing ink manufacturing industry, and especially relates to a one-step method environmentally-friendly resin and production technology thereof. The one-step method environmentally-friendly resin comprises, by mass, 55-60 parts of rosin, 5-10 parts of tung oil, 15-25 parts of cardanol, 5-10 parts of paraformaldehyde, 2-5 parts of glycerin, 2-3 parts of pentaerythritol, 0.5-1 part of maleic anhydride and 0.1-0.5 parts of a catalyst. The method comprises the following steps: condensing cardanol and paraformaldehyde in molten rosin under the action of the catalyst, carrying out an addition reaction on the above obtained condensation product and rosin, increasing the resin structure by using the maleic anhydride, carrying out esterification by using glycerin and pentaerythritol, and carrying out vacuum pumping to obtain the resin product. Compared with traditional two-step methods, the technology adopting a one-step method in the invention has the advantages of omitting of washing of phenolic resin with water, no generation of a large amount of formaldehyde-containing wastewater, environment pollution reduction, water resource saving and production cost saving.

Description

technical field [0001] The invention belongs to the field of resins used in the printing ink manufacturing industry, and in particular relates to one-step environment-friendly resins and a preparation process thereof. Background technique [0002] With the establishment and improvement of environmental protection laws and regulations, China's printing industry as a whole is developing towards environmental protection products. Enterprises have changed from passive requirements in the past to active changes, and their sense of social responsibility for environmental protection has greatly increased. The market demand for environmentally friendly and sustainable inks will increase day by day. As innovative products with both environmental and economic benefits emerge in an endless stream, the market for solvent-based and petroleum-based inks is gradually being replaced by newly developed environmentally-friendly products. At present, the traditional resin used in ink is produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/34C08G8/30C08G8/28C09D11/103
Inventor 马永利
Owner TIANJIN ANGUANG INK FACTORY
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