ARAMID PAPER SUITABLE FOR USE IN ELECTRONIC APPLICATIONS Russian patent published in 2022 - IPC D04H1/549 

FIELD: synthetic fibers.

SUBSTANCE: present invention relates to aramid paper, which is used as a substrate in electronic applications with low CTE value, with good homogeneity, dimensional stability and having density of 0.20–0.65 g/cm³ and grammage of 30–280 g/m², which contains 10–40 wt % of finely chopped aramid with linear density of 2.6 decitex or less and length of 0.5–25 mm and 10–80 wt % of aramid fibrid, wherein the finely chopped aramid contains at least 70 wt % of finely chopped para-aramid, and the aramid fibrid contains at least 70 wt % of the para-aramid fibrid.

EFFECT: disclosed is aramid paper suitable for use in electronic applications.

15 cl, 3 dwg, 4 tbl