Moisture-curing polyurethane epoxy coal-tar bitumastic

A technology of epoxy coal tar and anti-corrosion coatings, which is applied in the direction of polyurea/polyurethane coatings, anti-corrosion coatings, asphalt coatings, etc. It can solve the problems of high labor intensity, short life of moisture-permeable coatings, time-consuming and labor-intensive problems, and achieve fast progress , uniform thickness and low cost
CN101760135AInactive Publication Date: 2010-06-30孙锡宁
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
孙锡宁
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to a moisture-curing polyurethane epoxy coal-tar bitumastic. The invention adopts a technical scheme that: the bitumastic is formed by a component A and a component B in a weight ratio of 1:1-1:2; and the preparation method comprises the following steps of: placing 37 to 40 parts of polymethylene polyphenyl isocyanate, 11 to 13 parts of polyether 330 or 3,030, 2 to 3 parts of polyether 635 or 450, 8 to 9 parts of DOP or DBP, 3 to 4 parts of epoxy resin, 0.002 to 0.003 part of phosphoric acid and 33 to 37 parts of solvent No.S10,000 or industrial xylene in a reaction kettle at the temperature of between 81 and 86 DEG C, preserving the heat for 2 hours, and cooling the raw materials to obtain the component A; and placing 62 to 66 parts of coal-tar, 9 to 10 parts of cyclohexanone, 10 to 11.5 parts of toluene, and 7 to 8 parts of solvent No.S1,000or industrial xylene in the reaction kettle at the temperature of between 115 and 120 DEG C, preserving the heat for 2 hours, and cooling the raw materials to obtain the component B. The coating applied by the bitumastic is waterproof and long in life time and can further protect equipment and pipes.
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Description

technical field

[0001] The invention belongs to the field of coating compositions, and in particular relates to a moisture-proof polyurethane epoxy coal tar pitch anticorrosion coating. Background technique

[0002] Anti-corrosion of buried gas, tap water, sewage, sea water and oil pipelines; anti-corrosion of inner and outer walls of oil storage tanks and gas tanks; Anti-corrosion coating is required. At present, oil and resin liquid coatings and solid powder coatings are mostly used, such as alkyd paint and nitro paint for domestic steel pipe rust prevention. The coating contains moisture and changes in temperature, which is prone to foaming, wrinkling, cracking and peeling off. Therefore, the life of the moisture-permeable coating is not long. Moreover, when applying the coating, it is necessary to remove the rust first, which is time-consuming, labor-intensive, and labor-intensive; in the environment of -20°C, the coating cannot be carried out. Contents of the inven...

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
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