| abstract |
An allyl-containing resin is provided. The allyl-containing resin comprises a repeating unit comprising a structural unit represented by the following formula (I):, wherein, R1 to R3 in formula (I) are as defined in the specification; the Fourier transform infrared spectrum of the allyl-containing resin has a signal intensity "a" from 1650 cm<SP>-1</SP> to 1630 cm<SP>-1</SP> and a signal intensity "b" from 1620 cm<SP>-1</SP> to 1560 cm<SP>-1</SP>, and 0 < a/b ≤ 1.20; and the quantitative 1H-NMR spectrum of the allyl-containing resin has a signal intensity "c" from 3.2 ppm to 6.2 ppm and a signal intensity "d" from 6.6 ppm to 7.4 ppm, and 0 < c/d ≤ 1.20. |