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Unsaturated polyester resin for buttons and preparation method of unsaturated polyester resin

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: 2015-05-27
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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  • Unsaturated polyester resin for buttons and preparation method of unsaturated polyester resin
  • Unsaturated polyester resin for buttons and preparation method of unsaturated polyester resin

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, formaldehyde 0.7 parts by weight of hydroquinone, 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 brightener.

[0033] The preparation method of the unsaturated polyester resin for buttons is:

[0034] a) Mix phthalic anhydride, maleic anhydride, 1,2-propylene glycol, ethylene glycol, dipropylene glycol, high-temperature polymerization inhibitors, and antioxidants, and then heat up to water within 1 to 2 hours, and then heat up at a rate of 8 to 10°C / h Heat for 5h at 210℃, the acid value of the material reaches 68mgKOH / g, vacuum and reduce pressure, the vacuum degree is above 0.92a...

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, formaldehyde 0.9 parts by weight of hydroquinone, 1.5 parts by weight of triphenyl phosphite, and 0.02 parts by weight of copper naphthenate;

[0039] The preparation method of the unsaturated polyester resin for buttons is:

[0040] a) Mix phthalic anhydride, maleic anhydride, 1,2-propylene glycol, ethylene glycol, dipropylene glycol, high-temperature polymerization inhibitors and antioxidants, and then heat up to water within 1-2h, and then at a rate of 8-10℃ / h Warm up to 215℃, keep for 4h, the acid value of the material reaches 72mgKOH / g, vacuum and reduce pressure, the vacuum degree is above 0.92atm and maintain for 4h, until the acid value reaches 30mgKOH / g, stop vacuuming, cool to 180℃...

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, methane 0.7 parts by weight of hydroquinone, 1 part by weight of triphenyl phosphite, and 0.05 parts by weight of copper naphthenate;

[0045] The preparation method of the unsaturated polyester resin for buttons is:

[0046] a) Mix phthalic anhydride, maleic anhydride, 1,2-propylene glycol, ethylene glycol, dipropylene glycol, high-temperature polymerization inhibitors and antioxidants, and then heat up to water within 1-2h, and then at a rate of 8-10℃ / h Heat up to 210℃, keep for 4h, the acid value of the material reaches 70mgKOH / g, vacuum and reduce pressure, the vacuum degree is above 0.92atm and maintain for 2h, until the acid value reaches 28mgKOH / g, stop vacuuming, cool to 180℃, add lo...

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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 engineering, and specifically relates to an unsaturated polyester resin for buttons and a preparation method thereof. Background technique [0002] Unsaturated Polyester Resins (UPR) is a linear polymer compound with multifunctional groups. It has a polyester chain bond and an unsaturated double bond on the main chain of the skeleton. With carboxyl and hydroxyl groups. The biggest advantage of using unsaturated polyester resin is that its diluent (styrene) will undergo copolymerization and crosslinking reaction with the double bond on the main chain when it is finally used, so the solvent volatilizes less during use, so it belongs to the environment. To protect a class of products, the most important casting application of unsaturated polyester resin is the manufacture of button products. At present, the button resins on the market use high-activity formulas, and plasticizers are added to offset the brittlene...

Claims

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Application Information

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Patent Type & Authority Applications(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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