Conductive resin composition, resin molded body, and article
AssigneeCanon Kabushiki Kaisha
InventorsTakahiro Kojima, Akira Yane
Life of this patent
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Abstract
A conductive resin composition which has high conductivity and a low water absorption rate, in which thermal decomposition of a polyacetal resin is reduced, and which causes no problems in practical use in injection molding applications, and a resin molded body and an article each including the conductive resin composition. The conductive resin composition includes: a polyacetal serving as a main component; carbon black; graphite; and an oxazoline group-containing compound and a reaction product thereof.
Claims20
A conductive resin composition comprising:
- a polyacetal;
- conductive carbon black which has an organic functional group having acid active hydrogen;
- graphite;
- and
- an oxazoline group-containing compound and a reaction product thereof,
- wherein a content of the polyacetal is 50 mass % or more,
- wherein the oxazoline group-containing compound is an oxazoline derivative represented by the following formula (2) or (3)
- and
- wherein in the formula (3), m and n each represents an integer, and
- wherein a total stoichiometric amount of the oxazoline group-containing compound and the reaction product thereof is 0.02 mmol or more and 2 mmol or less with respect to 1 g of the carbon black.
A resin molded body comprising a conductive resin composition,
- the conductive resin composition comprising:
- a polyacetal;
- conductive carbon black which has an organic functional group having acid active hydrogen;
- graphite;
- and
- an oxazoline group-containing compound and a reaction product thereof,
- wherein a content of the polyacetal is 50 mass % or more,
- wherein the oxazoline group-containing compound is an oxazoline derivative represented by the following formula (2) or (3)
- and
- wherein in the formula (3), m and n each represents an integer, and
- wherein a total stoichiometric amount of the oxazoline group-containing compound and the reaction product thereof is 0.02 mmol or more and 2 mmol or less with respect to 1 g of the carbon black.
An article comprising a resin molded body,
- the resin molded body comprising:
- a polyacetal;
- conductive carbon black which has an organic functional group having acid active hydrogen;
- graphite;
- and
- an oxazoline group-containing compound and a reaction product thereof,
- wherein a content of the polyacetal is 50 mass % or more,
- wherein the oxazoline group-containing compound is an oxazoline derivative represented by the following formula (2) or (3)
- and
- wherein in the formula (3), m and n each represents an integer, and
- wherein a total stoichiometric amount of the oxazoline group-containing compound and the reaction product thereof is 0.02 mmol or more and 2 mmol or less with respect to 1 g of the carbon black.
Dependencies are inferred from the claim text.