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Unsaturated polyester resin with high cohesive force and high wettability and preparation method for unsaturated polyester resin

A polyester resin, unsaturated technology, applied in the field of highly wettable unsaturated polyester resin and its preparation, high adhesion, can solve the problems of easy yarn leakage, easy falling off of stone bonding, weak resin polarity, etc. , to achieve strong wettability and adhesion, improve storage stability, and prolong storage time

Active Publication Date: 2012-06-27
浙江天和树脂有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unsaturated polyester resin prepared by this traditional method is relatively unsatisfactory in terms of bonding and wetting. It is easy to fall off at the stone bonding point. Application requirements for some products and stone processing
[0003] Generally, diol and dibasic acid in unsaturated resin participate in the reaction with a molar ratio of about 1.03:1, and a small amount of alcohol will be lost during the reaction, so the polarity of the resin is very weak, which is not conducive to the interaction with inorganic fillers. Wetting and bonding, and in some applications that require anti-sagging, the thixotropic effect of resin and fumed silica is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 A kind of high adhesive force, the component of high wettability unsaturated polyester resin is as follows:

[0026] Diethylene glycol 42.9g, propylene glycol 15g, ethylene glycol 16.5g, phthalic anhydride 73.5g, maleic anhydride 33g, styrene 80g, glycerin 4.1g

[0027] The specific preparation method is as follows: 42.9g of diethylene glycol, 15g of propylene glycol, 16.5g of ethylene glycol, 73.5g of phthalic anhydride and 33g of maleic anhydride are put into the reactor, heated to 190°C, and carried out under nitrogen protection. Polycondensation reaction until the acid value reaches 100mgKOH / g, add 4.1g glycerin and keep warm at 190°C for polycondensation reaction for 3 hours, until the acid value reaches 55mgKOH / g, vacuumize for 2.5 hours under the condition of vacuum degree of 0.092Mpa, and remove the water. Make the reaction proceed forward, keep the material temperature at 190°C, until the acid value reaches 20mgKOH / g, add 30PPM hydroquinone and 60P...

Embodiment 2

[0029] Embodiment 2 A kind of high adhesion, high wettability unsaturated polyester resin reactant comprises the following components by weight percentage:

[0030] Diethylene glycol 1180g, dipropylene glycol 400g, isophthalic acid 1000g, terephthalic acid 436.5g, styrene 1580g, glycerin 191.5g

[0031] The specific preparation method is as follows: put 1180g of diethylene glycol, 400g of dipropylene glycol, 1000g of isophthalic acid and 436.5g of terephthalic acid into the reactor, heat to 190°C, and carry out polycondensation reaction under nitrogen protection until the acid value reaches 120mgKOH / g, add 191.5g of glycerol and carry out polycondensation reaction at 190°C for 2 hours until the acid value reaches 45mgKOH / g. Under the condition of vacuum degree of 0.08Mpa, vacuumize for 1.5 hours to remove the water, so that the reaction proceeds forward, and then Keep the material temperature at 190°C until the acid value reaches 25mgKOH / g, add 30PPM pyroglucinol, 40PPM coppe...

Embodiment 3

[0032] Embodiment 3 A kind of high adhesion, high wettability unsaturated polyester resin reactant comprises the following components by weight percentage:

[0033] Diethylene glycol 400g, neopentyl glycol 200g, adipic acid 700g, styrene 400g, methyl methacrylate 240g, glycerin 60g

[0034] The specific preparation method is as follows: 400g of diethylene glycol, 200g of neopentyl glycol, and 700g of adipic acid are put into the reactor, heated to 190°C, and polycondensation is carried out under nitrogen protection until the acid value reaches 110mgKOH / g, and 60g of glycerol is added in the Insulate at 190°C for polycondensation reaction for 2.5 hours until the acid value reaches 48mgKOH / g. Under the condition of vacuum degree of 0.07Mpa, vacuumize for 2 hours to remove water to make the reaction proceed forward, and then keep the material temperature at 190°C. When the acid value reaches 22mgKOH / g, add 30PPM monotert-butyl hydroquinone, 60PPM copper naphthenate solution, and ...

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PUM

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Abstract

The invention discloses an unsaturated polyester resin with high cohesive force and high wettability and a preparation method for the unsaturated polyester resin, and belongs to the technical field of unsaturated polyester resins. The unsaturated polyester resin with high cohesive force and high wettability comprises the following components in percentage by weight: 28 to 33 percent of dibasic alcohol, 30 to 40 percent of dibasic acid or acid anhydride, 30 to 35 percent of diluent and 2 to 4 percent of glycerol. The unsaturated polyester resin obtained by the process according to the formula has high wettability and cohesive force, and has a good and quick effect of wetting glass fiber; and the cohesive force is subject to pressure and shear force tests, is increased by over 30 percent compared with an ordinary o-phthalate resin, and is over 20MPa. When quartz stone boards are produced, the average using amount of the resin of each board can be reduced from 25KG to 23KG; and the caking is difficult in the stirring process of the resin and quartz sand, so that the spreading and pressing are easier during production of manufacturers, the phenomena of deformation, cracking and the like which appear in the convention manufacturers can also be further improved, and the thixotropic property of the resin and gaseous silicon can be greatly improved additionally.

Description

technical field [0001] The invention belongs to the technical field of unsaturated polyester resins, and in particular relates to a highly polar unsaturated polyester resin with high adhesion and high wettability and a preparation method thereof. Background technique [0002] Ordinary unsaturated polyester resins generally only adopt the polycondensation reaction of dibasic acid and dibasic alcohol, and add styrene to dilute at the same time to generate linear polymer compounds with ester bonds and unsaturated double bonds. The unsaturated polyester resin prepared by this traditional method is relatively unsatisfactory in terms of bonding and wetting. It is easy to fall off at the stone bonding point. Application requirements for some products and stone processing. [0003] Generally, diol and dibasic acid in unsaturated resin participate in the reaction with a molar ratio of about 1.03:1, and a small amount of alcohol will be lost during the reaction, so the polarity of th...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F283/02C08G63/676C08G63/672
Inventor 邱灵强何炜麻慎荣
Owner 浙江天和树脂有限公司
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