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Long-acting tackifying phenolic resin and preparation method thereof
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A phenolic resin, long-term technology, used in chemical instruments and methods, preparation of organic compounds, preparation of aminohydroxy compounds, etc., can solve problems such as difficulty in meeting requirements, and achieve stable product performance, high long-term viscosity increase, and high viscosity retention rate Effect
Inactive Publication Date: 2011-11-16
SHANDONG LAIWU RUNDA NEW MATERIAL
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Problems solved by technology
At present, the domestic tackifying resin is generally p-tert-butylphenol formal resin. Although its bonding performance has been greatly improved, it is still difficult to meet the requirements of the domestic high-end rubber additive market represented by the radial tire industry.
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[0029] (5), cool down to 80°C, add transphenylacetylene, and continue to stir for 1 hour;
[0030] (6), dehydration under reduced pressure to 180 DEG C, stop reaction, obtain this long-acting thickening phenolic resin product;
Embodiment 2
[0032] (1), measure p-tetraoctylphenol, p-hydroxyphenylacetylene, solid formaldehyde and sulfuric acid respectively at a molar ratio of 1: 0.75: 0.3: 0.01;
[0033] (2), add p-tertoctylphenol in the reactor, heat up to its complete melting;
[0036] (5), cool down to 80°C, add p-hydroxyphenylacetylene, and continue to stir for 1 hour;
[0037] (6), dehydration under reduced pressure to 180 DEG C, stop reaction, obtain this long-acting thickening phenolic resin product;
Embodiment 3
[0039] (1), measure p-tetylphenol, p-methoxyphenylacetylene, solid formaldehyde and benzenesulfonic acid respectively at a molar ratio of 1: 0.78: 0.4: 0.05;
[0040] (2), add p-tertoctylphenol in the reactor, heat up to its complete melting;
[0043] (5), cool down to 80°C, add p-methoxyphenylacetylene, and continue to stir for 1 hour;
[0044] (6), dehydration under reduced pressure to 180 DEG C, stop reaction, obtain this long-acting thickening phenolic resin product;
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Abstract
The invention discloses a long-acting tackifying phenolic resin and a preparation method thereof, belonging to the technical field of chemical industry. The preparation method comprises the following steps: separately weighing a reactant A, a reactant B, a reactant C and a catalyst in a molar ratio of 1:(0.7-0.8):(0.2-0.4):(0.01-0.05), wherein the reactant A is p-tert-butyl phenol or p-tert-octyl phenol, the reactant B is phenylacetylene, p-hydroxyl phenylacetylene, p-methoxy phenylacetylene, p-amino phenylacetylene or p-chloro phenylacetylene, the reactant C is formaldehyde, and the catalyst is one or two of sulfuric acid, oxalic acid, phosphoric acid and benzenesulfonic acid; adding the reactant A into a reaction kettle, and heating for melting completely; adding the reactant C; adding the catalyst; cooling to 80 DEG C and adding the reactant B; and dewatering while depressurizing to 180 DEG C so as to obtain the product. In the preparation method, a normal-pressure production process is employed, thus overcoming potential safety hazard problems existing in foreign high-temperature and high-pressure production.
Description
technical field [0001] The invention relates to the preparation of a resin, which belongs to the technical field of chemical industry, in particular to a long-acting thickening phenolic resin and a preparation method thereof. Background technique [0002] Tackifying resin for rubber, as one of the main raw materials of rubber industrial additives, can improve the self-adhesion and mutual adhesion between rubber, and can be widely used in any place where high-viscosity connection is required for tire rubber, especially tire side and ply, conveying It has good miscibility with butyl rubber, EPDM rubber, styrene-butadiene rubber, butadiene rubber, etc., has a good thickening effect, has no adverse effect on vulcanized rubber, and can obviously improve the viscosity of the rubber compound In addition, it also has the effects of plasticizing, softening and dispersing, which is conducive to the uniform dispersion of various powders and improves the comprehensive performance of rub...
Claims
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Application Information
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