epoxy functional resin composition
A technology of epoxy functional resin, epoxy resin, applied in the field of epoxy functional resin composition, capable of solving problems such as poor balance of properties, heat resistance and inappropriate melt viscosity
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Embodiment approach
[0022]
[0023] Structure VII below shows another embodiment of a preferred chemical structure of DVBDO useful in the present invention:
[0024]
[0025] When DVBDO is prepared by methods known in the art, it is possible to obtain one of three possible isomers: ortho, meta, and para. Accordingly, the present invention includes DVBDO described by any one of the above structures alone or in admixture thereof. Structures VI and VII above show the meta (1,3-DVBDO) and para (1,4-DVBDO) isomers of DVBDO, respectively. The ortho isomer is rare; in general most cases produce DVBDO in a ratio of the meta (structure VI) to para (structure VII) isomer generally in the range of about 9:1 to about 1:9. In one embodiment the present invention preferably comprises a ratio of Structure VI to Structure VII in the range of about 6:1 to about 1:6, in another embodiment the ratio of Structure VI to Structure VII can range from about 4:1 to about 1:4, or from about 2:1 to about 1:2.
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Embodiment 1-14 and comparative example A-E
[0083] General Procedure for Preparation of Epoxy Functional Reaction Products
[0084] The reactions for the preparation of several epoxy functional products were carried out as follows:
[0085] Equipped with a mechanical stirrer, N 2 A 100 mL round bottom flask with inlet, condenser, addition funnel, and thermocouple connected to a temperature controller was charged with the amount of epoxy resin shown in Table I. The starting temperature is ambient for DVBDO and 30°C for DER332. Then add the amine to the addition funnel and replace with N 2 The apparatus was purged for 15 minutes. The amine was then added dropwise to the flask with stirring while monitoring the reaction temperature rise. After the amine addition was complete and with continued stirring, the mixture was heated by a lamp connected to a temperature controller to gradually increase the temperature (by adjusting the temperature set point) while monitoring the reaction exotherm (typically around 80°C). Co...
Embodiment 15
[0094] DVBDO (20.00 g) and Jefflink 754 (25.88 g) were mixed in a three necked flask equipped with mechanical stirring, condenser and temperature port. The flask was flushed with nitrogen. The temperature was raised to 150°C and the reaction mixture was incubated for 6 hours. The reaction mixture was cooled to 25°C and the product was characterized. The obtained resin had a Tg of 16°C and an EEW of 521. Since the molar ratio was selected to target an EEW of 900, an EEW of 521 corresponds to 47% amine conversion.
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