UV curing resin, preparation method thereof and coating prepared therefrom

A technology of curing resin and curing coating, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as difficult control and unstable system, achieve high elasticity, increase internal crosslinking density, and improve flexibility.

Active Publication Date: 2014-01-01
HUNAN BENAN YADA NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The siloxane group structure is introduced into the main chain structure of the resin through the polyurethane reaction, which will improve the light transmittance and hardness of the paint film. Acrylate resin is used as a raw material component. Since a free radical initiator is used in the preparation process, the residual free radical initiator will cause the subsequent polyisocyanate containing unsaturated double bonds to further initiate free radical polymerization, thus making the system not stable. stable, difficult to control

Method used

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  • UV curing resin, preparation method thereof and coating prepared therefrom
  • UV curing resin, preparation method thereof and coating prepared therefrom
  • UV curing resin, preparation method thereof and coating prepared therefrom

Examples

Experimental program
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Embodiment 1

[0044] A UV curable resin. The raw materials include the following components in weight ratio: 231 grams of polycaprolactone diol with a molecular weight of 1500 Daltons, 116 grams of pentaerythritol, 147 grams of hexamethylene diisocyanate, and a molecular weight of 3500 Dalton's hydroxypropyl polydimethylsiloxane 365 grams, pentaerythritol triacrylate 173 grams, dibutyltin dilaurate 0.21 grams, and p-hydroxyanisole 0.43 grams.

[0045] The specific preparation steps are as follows:

[0046] The first step: the polycaprolactone diol and pentaerythritol are respectively dewatered at 110°C and 0.098MPa pressure for 1 hour;

[0047] Step 2: Put polycaprolactone diol and pentaerythritol into the reactor, control the temperature in the reactor at 70°C, add hexamethylene diisocyanate dropwise at a rate of 8 mL / min, and continue the reaction after the addition is complete 2 hours to obtain the first intermediate;

[0048] The third step: increase the temperature in the reactor to 75°C, add...

Embodiment 2

[0052] A UV-curable resin, based on the weight ratio, the raw materials include the following components: 332 grams of polycaprolactone diol with a molecular weight of 5000 Daltons, 138 grams of dipentaerythritol, 231 grams of isophorone diisocyanate, and a molecular weight of 416 grams of 6500 Dalton hydroxypropyl polydimethylsiloxane, 237 grams of dipentaerythritol pentaacrylate, 0.38 grams of stannous octoate, and 1.12 grams of hydroquinone.

[0053] The specific preparation steps are as follows:

[0054] The first step: the polycaprolactone diol and dipentaerythritol are respectively dewatered at 130°C and 0.098MPa pressure for 3 hours;

[0055] The second step: Put polycaprolactone diol and dipentaerythritol into the reactor, control the temperature in the reactor at 80°C, drip isophorone diisocyanate at a rate of 15 mL / min, and continue after the addition is complete React for 4.5 hours to obtain the first intermediate;

[0056] The third step: Raise the temperature in the reac...

Embodiment 3

[0060] A UV-curable resin, based on weight ratio, the raw materials include the following components: 256 grams of polycaprolactone diol with a molecular weight of 2000 Daltons, 128 grams of pentaerythritol, 4,4'-dicyclohexylmethane diisocyanate 163 Grams, 380 grams of hydroxypropyl polydimethylsiloxane with a molecular weight of 4000 Daltons, 248 grams of dipentaerythritol pentaacrylate, 0.26 grams of stannous octoate, and 0.65 grams of hydroquinone.

[0061] The specific preparation steps are as follows:

[0062] The first step: the polycaprolactone diol and pentaerythritol are respectively at 120°C and 0.098MPa pressure, and the water is removed under reduced pressure for 2 hours;

[0063] Step 2: Put polycaprolactone diol and pentaerythritol into the reactor, control the temperature in the reactor at 75°C, and add 4,4'-dicyclohexylmethane diisocyanate dropwise at a rate of 13mL / min. After the addition, the reaction is continued for 3 hours to obtain the first intermediate;

[006...

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Abstract

The invention provides a UV curing resin. The UV curing resin comprises the following raw materials: polycaprolactone glycol, a polyhydroxy monomer, hydroxypropyl polydimethylsiloxane, aliphatic diisocyanate, hydroxy-terminated acrylic ester, a catalyst and a polymerization inhibitor. The UV curing resin is aliphatic polyfunctional urethane acrylate, and the backbone structure of the resin contains an internal cross-linked structure formed by the polyhydroxy monomer and the aliphatic diisocyanate; as the aliphatic diisocyanate is used, the internal cross-linked structure can not enable a paint film to be fragile while improving the hardness of the paint film; through reaction between the hydroxypropyl polydimethylsiloxane and the aliphatic diisocyanate, a siloxane structure is introduced into the backbone of the UV curing resin, so that the UV curing resin has excellent light transmittance. The invention also discloses a preparation method for the UV curing resin, as well as a UV curing coating prepared from the UV curing resin, and the UV curing coating also has high abrasion resistance and excellent light transmittance.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an ultraviolet curable resin, a preparation method thereof and a coating prepared therefrom. Background technique [0002] UV-curable coatings have short curing time, low curing temperature, and low volatility. They are energy-saving, environmentally friendly, and efficient coatings. For the coatings used on mobile phone buttons, computer keyboards, mice and other electronic products, high hardness and wear resistance are required, and good light transmission is required. Traditional UV-curable wear-resistant coatings are difficult to meet the requirements. [0003] The patent number is 200710055531.0, and the patent name is a high wear-resistant light-cured coating, which discloses a high-wear-resistant light-cured coating, which uses nano-silica as the anti-wear agent and polyether-type aromatic polyurethane acrylate as the main resin , together with difunctional and multifunctional ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/42C08G18/61C09D175/14
CPCC08G18/4009C08G18/61C08G18/6644C08G18/673C08G18/73C08G18/755C08G18/758C09D175/14
Inventor 唐雄付为明吴骞
Owner HUNAN BENAN YADA NEW MATERIALS
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