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Environment-friendly rosin-modified phenolic resin and preparation method thereof

A phenolic resin, rosin modification technology, applied in inks, household appliances, applications, etc., to achieve the effects of controllable reaction process factors, less side reactions, and complete reactions

Inactive Publication Date: 2015-01-07
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention aims to solve the environmental protection of rosin-modified phenolic resin, provide a production method of controllable high-quality rosin-modified phenolic resin, reduce the formaldehyde pollution problem of phenolic resin products in the application process, and at the same time endow the material with self-cleaning Function

Method used

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  • Environment-friendly rosin-modified phenolic resin and preparation method thereof
  • Environment-friendly rosin-modified phenolic resin and preparation method thereof
  • Environment-friendly rosin-modified phenolic resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Embodiment 1: A kind of preparation method of environment-friendly type rosin modified phenolic resin

[0094] 1. Raw material pretreatment process: under the condition of nitrogen protection, heat masson pine pine resin to melt, filter, add 3‰ of rosin decolorizing agent oxalic acid, wash with water to remove dark water-soluble matter, obtain light color after clarification and separation Rosin raw material, after it is melted, add rosin-based surfactant A of 3‰ of rosin quality, stir evenly, cool to obtain the pretreated rosin raw material, for subsequent use;

[0095]

[0096] 2. Synthesis process of phenolic resin pulp: use phenol and formaldehyde with a molar ratio of 1:1 as raw materials for synthesizing phenolic pulp, add alkaline NaOH with a mass fraction of 0.5% of phenol, and react at 55°C for 2 hours to obtain phenolic resin pulp for later use;

[0097] 3. Alkali-treated titanium dioxide, which is prepared by the following method: dissolving titanium dioxi...

Embodiment 2

[0100] Embodiment 2: a kind of preparation method of environment-friendly type rosin modified phenolic resin

[0101] 1. Raw material pretreatment process: under the condition of nitrogen protection, after melting the first-grade rosin, add rosin-based surfactant B of 3‰ of the rosin quality, stir evenly, cool down, and obtain the pretreated rosin raw material for use;

[0102]

[0103] 2. Phenolic resin pulp synthesis process: use phenol and formaldehyde with a molar ratio of 1:1 as raw materials for synthesizing phenolic pulp, add alkaline NaOH with 1% phenol mass fraction, and react at 50°C for 3 hours to obtain phenolic resin pulp for later use;

[0104] 3. Alkaline treatment of titanium dioxide, which is prepared by the following method: dissolve titanium dioxide in a sodium hydroxide solution with a mass fraction of 30 times 10 mol / L, treat it at 160°C for 2 hours, wash with water to remove alkalinity, and then dry to obtain alkali Chemically treated titanium dioxide,...

Embodiment 3

[0107] Embodiment 3: A kind of preparation method of environment-friendly type rosin modified phenolic resin

[0108] 1. Raw material pretreatment process: heat masson pine rosin under nitrogen protection until it melts, filter, add 5‰ of rosin decolorizer oxalic acid, wash with water to remove dark water-soluble matter, obtain light-colored rosin after clarification and separation Raw material, after melting it, add rosin-based surfactant C of 3.5‰ of rosin quality, stir evenly, cool to obtain pretreated rosin raw material, and set aside;

[0109]

[0110] 2. Phenolic resin pulp synthesis process: use phenol and formaldehyde with a molar ratio of 1:1 as raw materials for synthesizing phenolic pulp, add alkaline NaOH with a phenol mass fraction of 0.6%, and react at 60° C. for 3 hours to obtain phenolic resin pulp for later use;

[0111] 3. Esterification functionalization reaction process: under the protection of nitrogen, add the pretreated rosin raw material obtained in ...

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Abstract

The invention relates to environment-friendly rosin-modified phenolic resin and a preparation method thereof. The preparation method comprises the following steps: a raw material pretreatment process, a phenolic resin grout synthesis process, an esterification reaction process and a refining process. The preparation method is characterized in that a titanium source is added in the esterification reaction process. The prepared environment-friendly rosin-modified phenolic resin has a high softening point, light color and high quality and is suitable for rosin industrialized mass production with high requirements on the color and the softening point. Meanwhile, the environment-friendly rosin-modified phenolic resin is endowed with functions of photosensitization self-cleaning and formaldehyde eliminating and is especially suitable for production of senior functional printing ink, painting and adhesives.

Description

technical field [0001] The invention relates to a new phenolic resin, in particular to an environment-friendly rosin-modified phenolic resin and a preparation method thereof. Background technique [0002] Phenolic resin is the earliest artificially synthesized polymer, which is formed by polycondensation of phenolic compounds and aldehyde compounds. [0003] The research and preparation of rosin-modified phenolic resin polymer materials has great strategic and economic significance for solving the environmental and resource utilization problems caused by a large number of agricultural and forestry biomass wastes. [0004] There are two main methods of rosin modified phenolic resin in industry: one-step method and two-step method. The one-step method is to directly add phenol into the molten rosin resin, and then drop liquid formaldehyde under certain conditions to obtain a modified product after condensation and dehydration and esterification; the two-step method is to add ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/34C08G8/10C09D11/103
Inventor 韩春蕊荆茜刘昕孙大卫李保同徐永霞
Owner BEIJING FORESTRY UNIVERSITY
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