Liquid Epoxy Resin Composition and Adhesive Using the Composition
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United States of America Patent
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Jul 16, 2015
app pub date -
Dec 29, 2014
filing date -
Jan 16, 2014
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Abstract
Embodiments of the present invention provide an adhesive requiring a low modulus of elasticity and a liquid epoxy resin composition that is used for the adhesive thereof. The liquid epoxy resin composition not only exhibits flexibility or a low modulus of elasticity to prevent magnet cracking in the manufacturing of a rotor, using a ferrite magnet in particular, but also does not undergo a decrease in weight while exhibits minimal dimensional change. This is true even if the liquid epoxy resin is immersed in an automatic transmission fluid, for a long period of time, in an environment which is used as a rotor. The liquid epoxy resin composition according to the embodiments of the present invention includes a bisphenol A type epoxy resin, an epoxy resin containing a polyoxyalkylene structure, and a curing agent as essential components, used for the adhesive.
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