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Environment-friendly flame-retarded unsaturated polyester resin and preparation method thereof

A polyester resin and unsaturated technology, which is applied in the field of new environmentally friendly flame retardant unsaturated polyester resin and its preparation, achieves the effects of low price, overcoming poor flame retardancy, and simple and easy-to-obtain raw materials

Inactive Publication Date: 2009-08-26
上海新天和树脂有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies in the practical application of existing halogen-based flame-retardant unsaturated polyester resins and pure additive flame-retardant resins, and provide a phosphorus-containing environmentally friendly flame-retardant unsaturated polyester resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 270 grams (3.5mol) of propylene glycol in the 2L four-necked flask that is equipped with stirrer, thermometer and rectifying tower, 301 grams (4.8mol) of ethylene glycol, 343 grams (1.6mol) of hydroxyphenylphosphine propionic acid, gradually Raise the temperature to 210°C, react until no water slips out of the distillation head, then cool down to 120°C, add 470 grams (4.8mol) of maleic anhydride and 216 grams (1.5mol) of phthalic anhydride, gradually raise the temperature to 200°C, and react After no water evaporated from the distillation head, depressurize and vacuumize for 3 hours, add 0.1g of hydroquinone, lower the temperature to 120°C, add 736g of diluent styrene and phosphorus-containing liquid flame retardant dimethyl phosphate 245 gram, stirred evenly to obtain about 2460g transparent phosphorus-containing environmentally friendly flame-retardant unsaturated polyester resin.

Embodiment 2

[0033] Add 260 grams (3.4mol) of propylene glycol in the 2L four-necked flask that is equipped with stirrer, thermometer and rectifying tower, 301 grams (4.8mol) of ethylene glycol, 424 grams (2.0mol) of hydroxyphenylphosphine propionic acid, gradually Raise the temperature to 210°C, react until no water slips out of the distillation head, then cool down to 120°C, add 470 grams (4.8mol) of maleic anhydride and 144 grams (1.0mol) of phthalic anhydride, gradually raise the temperature to 200°C, and react After no water evaporates from the distillation head, depressurize and vacuumize for 3 hours, add 0.1g of hydroquinone, cool down to 120°C, add 736 grams of diluent styrene and 245 grams of phosphorus-containing liquid flame retardant dimethyl phosphate , stirred evenly to obtain about 2463g transparent phosphorus-containing environmentally friendly flame-retardant unsaturated polyester resin.

Embodiment 3

[0035] Add 252 grams (3.3mol) of propylene glycol in the 2L four-necked flask that is equipped with stirrer, thermometer and rectifying tower, 301 grams (4.8mol) of ethylene glycol, 508 grams (2.4mol) of hydroxyphenylphosphine propionic acid, gradually Raise the temperature to 210°C, react until no water slips out of the distillation head, then cool down to 120°C, add 470 grams (4.8mol) of maleic anhydride and 69 grams (0.5mol) of phthalic anhydride, gradually raise the temperature to 200°C, and react After no water evaporates from the distillation head, depressurize and vacuumize for 3 hours, add 0.1g of hydroquinone, cool down to 120°C, add 736 grams of diluent styrene and 245 grams of phosphorus-containing liquid flame retardant dimethyl phosphate , stirred evenly to obtain about 2465g transparent phosphorus-containing environmentally friendly flame-retardant unsaturated polyester resin.

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PUM

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Abstract

The invention relates to a novel environment-friendly flame-retarded unsaturated polyester resin and a preparation method thereof. The resin can be used in vehicles, constructions, electrical appliances and other glass fiber reinforced plastic parts requiring flame retardancy. In the environment-friendly flame-retarded unsaturated polyester resin, bibasic alcohol and dibasic acid or estolide are condensed into unsaturated polyester; the unsaturated polyester resin contains solid reactive phosphorus flame retardant and liquid phosphonium flame retardant, and the content of phosphorus element in the resin is not less than 4 percent of gross mass, wherein the reactive phosphorus flame retardant can be one or two of hydroxyphenylphosphinyl-propanoic acid and hydroxyphenylphosphinyl-ethanoic acid; and the liquid phosphonium flame retardant can be one or more of triethyl phosphate, triphenyl phosphate and dimethyl methyl phosphonate. Each substance in the resin can be directly melted and polymerized without a catalyst; the product does not require separating solvent, does not have the problem of environmental pollution, and reduces the production cost; and the flame retardant can be easily obtained without adding new equipment.

Description

technical field [0001] The invention relates to a novel environment-friendly flame-retardant unsaturated polyester resin and a preparation method thereof. The resin can replace the traditional halogen-based flame-retardant unsaturated resin and be used in glass fiber reinforced plastic parts requiring flame retardancy such as vehicles, buildings, and electrical appliances. Background technique [0002] Unsaturated resin is the polycondensation product of saturated dibasic acid or acid anhydride and polyol, usually styrene is used as crosslinking agent (diluent), and it can be made into various profiles after being cured under heating or normal temperature conditions, and is widely used in construction and electrical appliances , transportation, aerospace and other fields. Due to the high hydrocarbon content of general-purpose unsaturated polyester resin, it is easy to burn, and produces a lot of harmful smoke when burning, so it is required to use flame-retardant unsaturated...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08K5/521C08G63/692C08F283/01
Inventor 林定多陈建朝马勇
Owner 上海新天和树脂有限公司
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