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A kind of unsaturated polyester resin for buttons and preparation method thereof

A polyester resin and unsaturated technology, which is applied in the field of unsaturated polyester resin for buttons and its preparation, can solve the problems of buttons that are easy to absorb water, limit the use of plasticizers, and become white

Active Publication Date: 2018-08-28
宜兴市兴合树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the successive promulgation of EU environmental protection regulations, the use of plasticizers in button resins has been restricted.
In addition, in the production process of buttons, it is easy to absorb water when slicing in water, which will cause the buttons to turn white.

Method used

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  • A kind of unsaturated polyester resin for buttons and preparation method thereof
  • A kind of unsaturated polyester resin for buttons and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Formula: 1600 parts by weight of phthalic anhydride, 1100 parts by weight of maleic anhydride, 800 parts by weight of 1,2-propanediol, 600 parts by weight of ethylene glycol, 1200 parts by weight of dipropylene glycol, 2200 parts by weight of styrene, 0.5 parts by weight of hydroquinone, methyl 0.7 parts by weight of dihydroquinone, 1.5 parts by weight of triphenyl phosphite, 0.01 parts by weight of copper naphthenate, 0.05 parts by weight of toner, and 0.015 parts by weight of fluorescent whitening agent.

[0033] The preparation method of unsaturated polyester resin for this button is:

[0034] a) Mix phthalic anhydride, maleic anhydride, 1,2-propanediol, ethylene glycol, dipropylene glycol, high-temperature polymerization inhibitors, and antioxidants, then heat up to effluent in 1-2 hours, and then heat up at a rate of 8-10°C / h To 210°C, keep warm for 5h, the acid value of the material reaches 68mgKOH / g, vacuumize and reduce pressure, the vacuum degree reaches 0.92at...

Embodiment 2

[0038] Formula: 1500 parts by weight of phthalic anhydride, 1200 parts by weight of maleic anhydride, 900 parts by weight of 1,2-propanediol, 700 parts by weight of ethylene glycol, 1300 parts by weight of dipropylene glycol, 2100 parts by weight of styrene, 0.6 parts by weight of hydroquinone, methyl 0.9 parts by weight of hydroquinone, 1.5 parts by weight of triphenyl phosphite, 0.02 parts by weight of copper naphthenate;

[0039] The preparation method of unsaturated polyester resin for this button is:

[0040]a) Mix phthalic anhydride, maleic anhydride, 1,2-propanediol, ethylene glycol, dipropylene glycol, high-temperature polymerization inhibitors, and antioxidants, then heat up to water outlet within 1-2 hours, and then at a speed of 8-10°C / h Raise the temperature to 215°C and keep it warm for 4 hours. When the acid value of the material reaches 72mgKOH / g, vacuumize and reduce pressure. The vacuum degree reaches 0.92atm or more and maintain for 4h. polymerization agent,...

Embodiment 3

[0044] Formula: 1700 parts by weight of phthalic anhydride, 1000 parts by weight of maleic anhydride, 700 parts by weight of 1,2-propanediol, 500 parts by weight of ethylene glycol, 1100 parts by weight of dipropylene glycol, 2300 parts by weight of styrene, 0.4 parts by weight of hydroquinone, methyl 0.7 parts by weight of hydroquinone, 1 part by weight of triphenyl phosphite, 0.05 parts by weight of copper naphthenate;

[0045] The preparation method of unsaturated polyester resin for this button is:

[0046] a) Mix phthalic anhydride, maleic anhydride, 1,2-propanediol, ethylene glycol, dipropylene glycol, high-temperature polymerization inhibitors, and antioxidants, then heat up to water outlet within 1-2 hours, and then at a speed of 8-10°C / h Raise the temperature to 210°C and keep it warm for 4 hours. When the acid value of the material reaches 70mgKOH / g, vacuumize and reduce pressure. The vacuum degree reaches 0.92atm or more and maintain for 2h. Polymerization agent, d...

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Abstract

The invention discloses an unsaturated polyester resin for buttons and a preparation method of the unsaturated polyester resin. The resin is mainly prepared from the following components in parts by weight: 1000-1800 parts of phthalic anhydride, 800-1500 parts of maleic anhydride, 600-1300 parts by weight of 1,2-propylene glycol, 300-800 parts of ethylene glycol, 1000-1800 parts of dipropylene glycol, 2000-3500 parts of styrene, 1-3 parts of a polymerization inhibitor, 1-3 parts of an antioxidant and 0.01-0.05 part of a polymerization retardant, wherein the polymerization inhibitor comprises a high-temperature polymerization inhibitor and a low-temperature polymerization inhibitor. Compared with the prior art, the unsaturated polyester resin for buttons conforms to the requirements of European Union Environmental Protection Regulations and is also suitable for the requirements of the button process.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to an unsaturated polyester resin for buttons and a preparation method thereof. Background technique [0002] Unsaturated polyester resin (Unsaturated Polyester Resins, referred to as UPR) is a linear polymer compound with multifunctional groups. It has polyester chain bonds and unsaturated double bonds on its main chain, and each end of the macromolecular chain With carboxyl and hydroxyl. The biggest advantage of using unsaturated polyester resin is that its diluent (styrene) will undergo copolymerization and crosslinking reaction with the double bonds on the main chain when it is finally used, so the solvent volatilization is less during use, so it belongs to the environment. In the protection category, the most important casting application of unsaturated polyester resins is the manufacture of buttons. The resins for buttons currently on the market are formulated wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/01C08F212/08C08G63/676C08L51/08C08K5/526
Inventor 韩立春潘伯祥陈彬彬
Owner 宜兴市兴合树脂有限公司
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