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A kind of roller coating and preparation method thereof

A technology of roller coating and silicone, which is applied in the direction of fireproof coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor toughness, poor heat resistance of tough polyester, etc., and achieve excellent high temperature resistance and toughness.

Active Publication Date: 2022-06-28
INNOTEK TECH CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a roller coating and its preparation method, which solves the problems of poor heat resistance of tough polyester used in industrial coatings and poor toughness of silicone-modified polyester resins, and achieves the extensibility of the roller coating. properties, but also has the effect of hardness and temperature resistance

Method used

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  • A kind of roller coating and preparation method thereof
  • A kind of roller coating and preparation method thereof

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Experimental program
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Embodiment 1

[0036] Embodiment 1: a kind of roller coating and preparation method thereof, comprising the following steps:

[0037] Step 1. Prepare silicone modified resin with tensile toughness:

[0038] (1) Preparation of silicone modified resin:

[0039] A, get 7.67 kilograms of trimethylolpropane, 20.31 kilograms of neopentyl glycol, 24.7 kilograms of isophthalic acid, 5.2 kilograms of adipic acid in the reactor, be warming up to 120 ℃ and start stirring, continue with the temperature rise of 10 ℃ / h The rate is heated to 230°C, and the temperature is lowered when the measured acid value is less than 6. When the temperature drops to 120°C, PMA solvent is added, and the solid content is diluted to 65%, and then it is ready for use;

[0040] B, get 20 kilograms of above-mentioned polyester resin, add 3 kilograms of DC-217 organosilicon intermediates, 1.61 kilograms of PMA solvent in the reaction kettle with nitrogen protection, after stirring about 1 hour under 80 ℃ of conditions, add n-...

Embodiment 2

[0047] Embodiment 2: a kind of roller coating and preparation method thereof, comprising the following steps:

[0048] Step 1. Prepare silicone modified resin with tensile toughness:

[0049] (1) Preparation of silicone modified resin:

[0050] A, get 8.5 kilograms of trimethylolethane, 21.1 kilograms of neopentyl glycol, 25.5 kilograms of isophthalic acid, 6.0 kilograms of adipic acid in the reactor, be warming up to 120 ℃ and start stirring, continue with 10 ℃ / h of The temperature rise rate is heated to 230°C, and the temperature is lowered when the measured acid ester is less than 6. When the temperature drops to 120°C, a PMA solvent is added, and the solid content is diluted to 65%, and then for subsequent use;

[0051] b, get 20 kilograms of above-mentioned polyester resin, add 3 kilograms of DC-217 organosilicon intermediates, 1.61 kilograms of PMA solvent in the reaction kettle with nitrogen protection, after stirring about 1.5 hours under 80 ℃ of conditions, add n-but...

Embodiment 3

[0058] Embodiment 3: a kind of roller coating and preparation method thereof, comprising the following steps:

[0059] Step 1. Prepare silicone modified resin with tensile toughness:

[0060] (1) Preparation of silicone modified resin:

[0061] A, get 4.56 kilograms of trimethylolpropane, 19.6 kilograms of neopentyl glycol, 4.55 kilograms of trimethylolethane, 22.5 kilograms of isophthalic acid, 4.8 kilograms of adipic acid in the reactor, be warming up to 120 ℃ and start stirring , continue to heat up to 230°C at a heating rate of 10°C / h, start cooling when the measured acid ester is less than 6, add PMA solvent until the temperature drops to 120°C, dilute to a solid content of 65%, and then reserve;

[0062] b, get 20 kilograms of above-mentioned polyester resins, add 1.5 kilograms of Wacker 232 organosilicon intermediates, 1.5 kilograms of Dow Corning 3074 organosilicon intermediates, 1.61 kilograms of PMA solvents in a reaction kettle with nitrogen protection, stir about ...

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Abstract

The invention relates to a roller coating and a preparation method thereof, comprising the following components: 70-75 parts by weight of silicone modified resin with tensile toughness, 20-25 parts by weight of solvent, 1-2 parts by weight of silicone oil, 1-2 parts by weight of 2 parts by weight leveling agent and 0.5-2 parts by weight dispersant; can also include 3-8 parts by weight of toner and 0.5-1 parts by weight of filler; the silicone modified resin with tensile toughness is composed of high temperature resistance, Composed of high-toughness curing agent and silicone modified resin, the weight ratio of high-temperature-resistant, high-toughness curing agent and silicone polyester resin is 2-3:8-7; the high-temperature-resistant, high-toughness curing agent is composed of polyol and isocyanate Prepared by mixed reaction, wherein the molar ratio of ‑NCO:‑OH is 1.2‑1.6:1. The invention can solve the problems of poor heat resistance of tough polyester used in industrial coatings and poor toughness of organosilicon-modified polyester resin, and achieve the effect of ductility, hardness and temperature resistance of roller coating coatings.

Description

technical field [0001] The invention relates to a roller coating coating, in particular to a roller coating coating and a preparation method thereof. Background technique [0002] In the prior art, the outer coating products of cookware all adopt the method of stretching first and then spraying, which mainly has the following shortcomings: [0003] (1) The construction process of spraying has large losses and high pollution; according to statistics, 60% of the atomized paint spun during the spraying process is wasted, not adsorbed on the painted pot, and is discharged into the air middle; [0004] (2) The efficiency of spraying process is low, and the efficiency of roller coating is generally 3-6 times that of spraying. [0005] As a roller coating coating, it must have good ductility, which is convenient for stretching and forming; in addition, because it is used in cookware, it must have certain hardness, wear resistance and high temperature resistance. [0006] At pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D7/61C08G18/66C08G18/44C08G18/46C08G18/32
CPCC09D175/06C09D5/18C09D7/61C08G18/6644C08G18/44C08G18/4692C08G18/3206C08L2201/08C08K3/04
Inventor 田祝庚林学佐钟迪克王凡
Owner INNOTEK TECH CHINA