Metal fine particle dispersant containing branched polymer compound having ammonium group

Patent metadata

Field	Value
Publication number	US-2019359771-A1
Application number	US-201916533304-A
Country	US
Kind code	A1
Filing date	Aug 6, 2019
Priority date	Aug 22, 2008
Publication date	Nov 28, 2019
Grant date	—

Abstract

A complex that includes a metal fine particle dispersant including a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein the metal fine particle includes platinum (Pt) or palladium (Pd), the metal fine particle dispersant includes a branched polymer compound of Formula (1):

First claim

1 . A complex comprising:
a metal fine particle dispersant comprising a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein
the metal fine particle comprises platinum (Pt) or palladium (Pd),
the metal fine particle dispersant comprises a branched polymer compound of Formula (1):

wherein
R 1 is a hydrogen atom,
R 2 , R 3 , and R 4 are independently a hydrogen atom, a linear, branched, or cyclic C 1-20 alkyl group, a C 6-20 arylalkyl group,
wherein the alkyl group and the arylalkyl group are optionally substituted with an alkoxy group, a hydroxy group, an ammonium group, a carboxy group, or a cyano group, or —(CH 2 CH 2 O) m —R 5 ,
wherein R 5 is a hydrogen atom or a methyl group, and m is an arbitrary integer of 2 to 100, or

R 2 , R 3 , and R 4 are optionally bonded to each other through a linear, branched, or cyclic alkylene group to form a ring together with a nitrogen atom to which R 2 , R 3 , and R 4 are bonded,
wherein at least one of R 2 , R 3 , and R 4 is an octyl group or a dodecyl group,
X − is an anion,
A 1 is a structure of Formula (2):

wherein:
A 2 is a linear, branched, or cyclic C 1-30 alkylene group that optionally contains an ether bond or an ester bond, and
Y 1 , Y 2 , Y 3 , and Y 4 are a hydrogen atom, and

n is the number of repeating unit structures that is an integer of 2 to 100,000, and
the complex has a higher catalyst activity compared to a same complex that does not have the branched polymer compound of Formula (1).

2 . The complex according to claim 1 , wherein the metal fine particle has an average particle diameter of 1 nm or more to 100 nm or less.

3 . The complex according to claim 1 , wherein the branched polymer compound has a degree of distribution Mw (weight average molecular weight)/Mn (number average molecular weight) of 1 to 7.

4 . A composition comprising:
the complex according to claim 1 ; and an organic solvent.

5 . The composition according to claim 4 , wherein the organic solvent comprises at least one solvent selected from benzene, toluene, xylene, ethylbenzene, tetrahydrofuran, diethyl ether, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, n-heptane, n-hexane, or cyclohexane.

6 . The composition according to claim 4 , wherein an amount of the metal fine particle dispersant in the composition is 50 to 2,000 parts by mass, relative to 100 parts by weight of the metal fine particle.

Assignees

• Nissan Chemical Ind Ltd
• Univ Kyushu

Inventors

• Kojima Keisuke
• Tanaka Akihiro
• Odoi Keisuke
• Nagashima Hideo
• Sue Takashi

Classifications

• H01M4/8668

  Binders · CPC title

• B01J2231/643

  of R2C=O or R2C=NR (R= C, H) · CPC title

• B01J31/06

  containing polymers {(organometallic polymers B01J31/123; polymer-bound organometallic complexes B01J31/165; coordination polymers B01J31/1691)} · CPC title

• B01J2231/645

  of C=C or C-C triple bonds · CPC title

• C08K3/08 Primary

  Metals · CPC title