US 12,479,972 B2
Resin composition and resin molded body thereof
Masaki Azuma, Tokyo (JP); Yuki Sakai, Kanagawa (JP); and Takahiro Kojima, Kanagawa (JP)
Assigned to INSTITUTE OF SCIENCE TOKYO, Tokyo (JP); KANAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, Ebina (JP); and CANON KABISHIKI KAISHA, Tokyo (JP)
Filed by INSTITUTE OF SCIENCE TOKYO, Tokyo (JP); KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, Ebina (JP); and CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 14, 2022, as Appl. No. 17/575,896.
Application 17/575,896 is a continuation of application No. PCT/JP2020/028236, filed on Jul. 21, 2020.
Claims priority of application No. 2019-135114 (JP), filed on Jul. 23, 2019.
Prior Publication US 2022/0135764 A1, May 5, 2022
Int. Cl. C08K 3/22 (2006.01); C01G 53/82 (2025.01); C08K 9/06 (2006.01); G02B 7/02 (2021.01)
CPC C08K 3/22 (2013.01) [C01G 53/82 (2025.01); C08K 9/06 (2013.01); G02B 7/02 (2013.01); C01P 2006/33 (2013.01); C08K 2003/2265 (2013.01); C08K 2003/2293 (2013.01)] 16 Claims
 
1. A resin composition comprising:
metal oxide particles with a negative coefficient of linear expansion at 0° C. to 60° C.; and
a thermoplastic resin with a positive coefficient of linear expansion at 0° C. to 60° C.,
wherein:
the metal oxide particles change in metal element valence during crystal phase transition;
a surface of the metal oxide particles is provided with a compound containing at least one metal element selected from the group consisting of Si, Al, and Ti;
the compound containing the metal element is a condensate of an alkoxide compound represented by formula (1) or (2):
SiR1n1R2m1  (1)
wherein:
R1 is a functional group selected from the group consisting of a methyl group, a methoxy group, and an ethoxy group;
R2 is a functional group having 8 or less carbon atoms and having an end portion selected from the group consisting of any one of epoxy, amine, imine, and (meth)acryloxy groups;
n1 is a positive integer;
m1 is a positive integer or 0; and
n1+m1 is 4;
M4R3n2R4m2  (2),
wherein:
M4 is Al or Ti;
R3 is a functional group selected from the group consisting of an alkyl group having 8 or less carbon atoms and an alkoxy group having 8 or less carbon atoms;
R4 is a functional group having 8 or less carbon atoms and having an end portion selected from the group consisting of any one of epoxy, amine, imine, and (meth)acryloxy groups, phosphoric acid ester, and sulfonic acid ester;
when M4 is Al, n2 is a positive integer, m2 is a positive integer or 0, and n2+m2 is 3; and
when M4 is Ti, n2 is a positive integer, m2 is a positive integer or 0, and n2+m2 is 4; and
the metal oxide particles are particles of a metal oxide represented by formula (A) or (B):
(Bi1-x1M1x1)(Ni1-x2M2x2)Oy  (A),
wherein:
M1 is at least one metal element selected from the group consisting of lanthanoids, Y, and In;
M2 is at least one metal element selected from the group consisting of Al, V, Cr, Mn, Fe, Co, Ga, and Sb;
x1, x2, and y are such that x1 is 0.02 to 0.15, x2 is 0.02 to 0.50, and y is 3 or less;
BiNi1-xM3xOy  (B),
wherein:
M3 is at least one metal element selected from the group consisting of Al, V, Cr, Mn, Fe, Co, Ga, and Sb;
x is 0.02 to 0.50; and
y is 3 or less.