A kind of method and application of synthesizing unsaturated polyester resin by utilizing allyl glycidyl ether residual liquid
A technology of allyl glycidyl ether and polyester resin, which is applied in the field of mechanical chemical synthesis technology to achieve the effects of high social value, high quality, excellent bending strength and impact resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0022] Embodiment 1, a kind of method utilizing allyl glycidyl ether raffinate to synthesize unsaturated polyester resin, its synthetic method comprises the following steps:
[0023] Step (1), with phthalic anhydride, terephthalic acid, isophthalic acid, maleic anhydride, fumaric acid, adipic acid, propylene glycol, neopentyl glycol, ethylene glycol, di Glycol is prepared into a mixed reaction system, and the alkyd molar ratio in the mixed reaction system is 0.5:1 to 1.5:1;
[0024] Step (2), put the mixed reaction system obtained through step (1) in the reactor, and then add the allyl glycidyl ether raffinate with an epoxy value of 0.01 to 0.6 mol / 100g into the reactor, wherein The mass fraction of the feeding amount of propyl glycidyl ether raffinate accounts for 10% to 50% of the total feeding amount of the reaction system;
[0025] Step (3), on the basis of step (2), adjust the reaction temperature in the reactor to 150-250°C, keep it warm for 2-3 hours, and measure the a...
Embodiment 2
[0029] Embodiment 2, a kind of method utilizing allyl glycidyl ether raffinate to synthesize unsaturated polyester resin, comprises the steps:
[0030] Step (1): Accurately weigh 10g of allyl glycidyl ether raffinate with an epoxy value of about 0.2eq / 100g, 30g (0.28mol) of diethylene glycol, 30g (0.39mol) of propylene glycol, and 50g of phthalic anhydride (0.3mol), maleic anhydride 25g (0.26mol), fumaric acid 25g (0.22mol), add simultaneously in the 500ml four-neck flask that is equipped with thermometer, nitrogen inlet, reflux condenser and agitator to react, The reaction temperature was gradually increased in the nitrogen flow, and was controlled at 210°C. After the reaction, the acid value of the polyester was controlled at 15 mgKOH / g, and 95 g of styrene was added. Stirring and cooling to obtain the final unsaturated polyester resin A.
[0031] Step (2): 100 parts of resin A obtained from step (1), 4 parts of methyl ethyl ketone peroxide, 1 part of cobalt naphthenate, 30...
Embodiment 3
[0034] Embodiment 3, a kind of method utilizing allyl glycidyl ether raffinate to synthesize unsaturated polyester resin, comprises the steps:
[0035] Step (1): Accurately weigh 10g of allyl glycidyl ether raffinate with an epoxy value of about 0.3eq / 100g, 30g (0.28mol) of diethylene glycol, 40g (0.52mol) of propylene glycol, and 50g of phthalic anhydride (0.3mol), maleic anhydride 30g (0.3mol), fumaric acid 25g (0.22mol), add simultaneously and react in the 500ml four-necked flask that is equipped with thermometer, nitrogen inlet, reflux condenser and stirrer , the reaction temperature is gradually increased in the nitrogen flow, controlled at 190°C, the acid value of the polyester is controlled at 30mgKOH / g at the end of the reaction, and 80g of styrene is added. Stir and cool to obtain the final unsaturated polyester resin product B.
[0036] Step (2): In the same manner as in Example 2, the unsaturated polyester resin B was compression-molded.
PUM
| Property | Measurement | Unit |
|---|---|---|
| epoxy value | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More