Patent ID: 9464190
Filing Date: 2016-10-11
CPC Classification: C08L

Claim Text:
1. A manufacturing material for circuit boards, comprising: a dielectric basic layer formed of a mixture comprising thermoplastic polymer, the polymer part of which mixture comprises 75 to 95% by weight of thermoplastic polyphenylene oxide (PPO), the polymer part further comprising: 5 to 20% by weight of elastomer which is incompatible with polyphenylene oxide, that forms a separate phase in a mixture of polyphenylene oxide and said elastomer, wherein said elastomer comprises at least one of EPDM-g-MAH, SEBS-g-MAH and EPDM-g-SAN, and wherein the loss factor of the manufacturing material is less than 0.014, measured at a frequency of 1 GHz.