Unsaturated polyester resin for button 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 easily absorbing buttons, restricting the use of plasticizers, and turning white.

Active Publication Date: 2012-07-18
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 restri...

Method used

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  • Unsaturated polyester resin for button and preparation method thereof
  • Unsaturated polyester resin for button and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Formula: 2600 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 diethylene glycol, 2700 parts by weight of styrene, and 0.5 parts by weight of hydroquinone , 0.7 parts by weight of methyl hydroquinone, 2 parts by weight of triphenyl phosphite, 0.05 parts by weight of copper naphthenate, 2 parts by weight of paraffin, 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) After mixing phthalic anhydride, maleic anhydride, 1,2-propanediol, ethylene glycol, diethylene glycol, high-temperature polymerization inhibitors, and antioxidants, the temperature is raised to effluent in 1-2 hours, and then heated at 8-10°C / h Speed ​​up to 210°C, keep warm for 5 hours, the acid value of the material reaches 68mgKOH / g, vacuum...

Embodiment 2

[0038] Formula: 2500 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 diethylene glycol, 2600 parts by weight of styrene, and 0.6 parts by weight of hydroquinone , 0.9 parts by weight of methyl hydroquinone, 2.5 parts by weight of triphenyl phosphite, 0.04 parts by weight of copper naphthenate, 2.5 parts by weight of paraffin;

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

[0040]a) After mixing phthalic anhydride, maleic anhydride, 1,2-propanediol, ethylene glycol, diethylene glycol, high-temperature polymerization inhibitors, and antioxidants, the temperature is raised to effluent within 1-2 hours, and then heated at 8-10°C / h Raise the temperature to 215°C at a certain speed, keep it warm for 4 hours, the acid value of the material reaches 72mgKOH / g, vacuumize and reduce the pressure, the vacuum degree re...

Embodiment 3

[0044] Formula: 2700 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 diethylene glycol, 2800 parts by weight of styrene, and 0.4 parts by weight of hydroquinone , 0.7 parts by weight of methyl hydroquinone, 1.5 parts by weight of triphenyl phosphite, 0.06 parts by weight of copper naphthenate, 1.5 parts by weight of paraffin;

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

[0046] a) After mixing phthalic anhydride, maleic anhydride, 1,2-propanediol, ethylene glycol, diethylene glycol, high-temperature polymerization inhibitors, and antioxidants, the temperature is raised to effluent within 1-2 hours, and then heated at 8-10°C / h Raise the temperature to 210°C at a certain speed, keep it warm for 4 hours, the acid value of the material reaches 70mgKOH / g, vacuumize and reduce the pressure, the vacuum degree r...

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Abstract

The invention discloses unsaturated polyester resin for a button and a preparation method thereof. The resin is mainly prepared form the following components in parts by weight: 2,000-3,000 parts of phthalic anhydride, 800-1,500 parts of maleic anhydride, 600-1,300 parts of 1,2-propylene glycol, 300-800 parts of ethylene glycol, 1,000-1,500 parts of diethylene glycol, 2,100-3,100 parts of styrene, 1-5 parts of a polymerization inhibitor, 1-5 parts of an antioxidant, 0.01-0.08 part of a retarder and 1-5 parts of paraffin, wherein the retarder consists of a high-temperature retarder and a low-temperature retarder. Compared with the prior art, the unsaturated polyester resin for the button meets the requirements of the European Union Environment Protection Laws and Regulations and is suitable for button process requirements.

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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IPC IPC(8): C08F283/01C08G63/676C08L51/08C08K5/526
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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