| 摘要 |
The present invention relates to ionizing radiation-crosslinking PBT resin pellets having a high reflow resistance and a high mechanical strength which are suitable for lead-free soldering. In the present invention, there is provided an ionizing radiation-crosslinking polybutylene terephthalate resin pellets comprising a crosslinking agent capable of acting upon exposure to an ionizing radiation,
a content of the crosslinking agent in the resin pellets being 1 to 25 parts by weight on the basis of 100 parts by weight of the polybutylene terephthalate resin, and
a content of an unreacted component in the crosslinking agent being not less than 75% by weight on the basis of the weight of the crosslinking agent.
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