US 12,083,708 B2
Pellet of liquid crystal polyester resin composition
Tomoyuki Hara, Tokyo (JP); Masanobu Uonami, Niihama (JP); and Takayuki Sugiyama, Tsukuba (JP)
Assigned to SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
Appl. No. 17/610,047
Filed by SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
PCT Filed May 15, 2020, PCT No. PCT/JP2020/019442
§ 371(c)(1), (2) Date Nov. 9, 2021,
PCT Pub. No. WO2020/235479, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 2019-093681 (JP), filed on May 17, 2019; application No. 2019-230639 (JP), filed on Dec. 20, 2019; and application No. 2020-083786 (JP), filed on May 12, 2020.
Prior Publication US 2022/0266476 A1, Aug. 25, 2022
Int. Cl. B29B 9/06 (2006.01); B29B 9/14 (2006.01); B29C 48/00 (2019.01); B29C 48/40 (2019.01); C08G 63/183 (2006.01); C08K 3/34 (2006.01); C08K 7/14 (2006.01); B29K 67/00 (2006.01); B29K 509/08 (2006.01); B29K 509/10 (2006.01)
CPC B29B 9/06 (2013.01) [B29B 9/14 (2013.01); B29C 48/022 (2019.02); B29C 48/40 (2019.02); C08G 63/183 (2013.01); C08K 3/34 (2013.01); C08K 7/14 (2013.01); B29K 2067/00 (2013.01); B29K 2509/08 (2013.01); B29K 2509/10 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A pellet of a liquid crystal polyester resin composition, comprising: a liquid crystal polyester resin; and an inorganic filler, wherein:
the pellet having a cylindrical shape is placed on a plane, and a front projected image of the pellet is taken from a direction perpendicular to an axial direction of the pellet and from a direction perpendicular to the plane on which the pellet is placed,
a horizontal Feret length of a rectangle circumscribed around the front projected image of the pellet is taken as a length of a long side of the rectangle, and a vertical Feret length thereof is taken as a length of a short side of the rectangle,
the pellet has a maximum height in each cross section perpendicular to the plane, and an average of the maximum height of the each cross section is defined as an average height of the pellet,
a product of the vertical Feret length and the horizontal Feret length is defined as an area S0 of the rectangle circumscribed around the front projected image of the pellet,
a cross-sectional area of a cross-section at a half height of the average height of the pellet, the cross-section being horizontal to the plane, is defined as an area S of a projected image of the pellet,
the length of the long side of the rectangle is 3 mm to 4 mm, and
an area ratio S/S0 of the area S of the projected image to the area S0 of the rectangle is 0.55 to 0.70.