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Amino-modified unsaturated polyester resin

A polyester resin and amino modification technology, applied in the direction of adhesive additives, polymer adhesive additives, adhesives, etc., can solve the problems of partial brittleness of product performance, low adhesive force, and limited development, etc., to achieve the solution of bonding The effect of poor force, improved adhesion, and improved flexibility and adhesive force

Active Publication Date: 2020-09-15
ZHAOQING FUTIAN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost performance of unsaturated resins, unsaturated resins are widely used, such as glass fiber reinforced resins, casting resins, surface coating resins, adhesive resins, etc. However, the disadvantages of unsaturated polyester resins are large shrinkage and stickiness. The relay is low, and the performance of the product is brittle. These defects limit its development

Method used

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  • Amino-modified unsaturated polyester resin
  • Amino-modified unsaturated polyester resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 8.5 mol of propylene glycol, 0.78 mol of melamine, 4.76 mol of phthalic anhydride, 3.1 mol of maleic anhydride, 0.1 g of methylhydroquinone, and reflux reaction at 100-200°C until the acid value is less than 30 mgKOH / g , cooling down to 150°C, adding 0.2 grams of methyl hydroquinone, then cooling down to 70-100°C, adding 7.2mol styrene for dilution, 0.1 grams of p-tert-butylcatechol, and 1 gram of paraffin wax, to obtain amino-containing unsaturated resin .

Embodiment 2

[0028] Add 2.7 mol propylene glycol, 5.8 mol ethylene glycol, 1 mol diethylene glycol, 0.7 mol urea, 6.57 mol phthalic anhydride, 2.2 mol maleic anhydride, 0.1 g of methyl hydroquinone, at 100-200 °C Reflux reaction within the range until the acid value is less than 30mgKOH / g, cool down to 150°C and add 0.2g of methyl hydroquinone, then cool down to 70-100°C and add 7.5mol styrene for dilution, 0.1g of p-tert-butylcatechol , 1 gram of paraffin to obtain an amino-containing unsaturated resin.

[0029] Prioritize the reaction of urea with phthalic anhydride at 135-145°C until the acid value is in the range of 120-150mgKOH / g, and then add maleic anhydride to react.

Embodiment 3

[0031] Add 6.8 mol of methylpropanediol, 2.2 mol of ethylene glycol, 5.8 mol of phthalic anhydride, 2.5 mol of maleic anhydride, 0.1 g of methyl hydroquinone, and reflux in the range of 100-200°C until the acid value Less than 30mgKOH / g, cool down to 150°C and add 0.2g of methyl hydroquinone, then cool down to 70-100°C and add 7.2mol styrene to dilute, 0.1g of p-tert-butylcatechol to obtain carboxyl-terminated unsaturated resin, Cool down to 55-70°C, add 0.35mol urethane acrylic acid to react for 1 hour, and add 1 gram of paraffin to obtain amino group-containing unsaturated polyester resin.

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Abstract

The invention discloses amino-modified unsaturated polyester resin which is synthesized by a reaction among the following components: saturated binary acid or anhydride, unsaturated binary acid or anhydride, polyhydric alcohol, an amino compound, an active diluent, a polymerization inhibitor and paraffin. According to the amino-modified unsaturated polyester resin disclosed by the invention, the shrinkage rate can be effectively reduced, the flexibility and the bonding force of the resin are improved, and particularly, the bonding force of PMMA (polymethyl methacrylate) acrylic and ABS (acrylonitrile butadiene styrene) composite boards can be greatly improved, so that the problems of poor bonding force, high shrinkage rate and poor impact toughness of the existing unsaturated polyester resin products are solved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an amino-modified unsaturated polyester resin. Background technique [0002] Unsaturated polyester resin is one of the most commonly used thermosetting resins. Its biggest advantage is that it can be cured at room temperature, molded under normal pressure, and has flexible process performance. It is especially suitable for large-scale and on-site manufacturing of FRP products. The overall performance of the resin after curing Well, the mechanical properties are lower than epoxy resin, vinyl resin, but better than phenolic resin. Due to the high cost performance of unsaturated resins, unsaturated resins are widely used, such as glass fiber reinforced resins, casting resins, surface coating resins, adhesive resins, etc. However, the disadvantages of unsaturated polyester resins are large shrinkage and stickiness. The relay is low, and the performance of the product is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L91/06C09J167/06C09J11/08C08G63/685C08G63/91
CPCC08L67/06C09J167/06C09J11/08C08G63/6858C08G63/918C08L91/06
Inventor 黎旦光徐贵红苏伟麟黎罗王梁正权
Owner ZHAOQING FUTIAN CHEM IND
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