Canon Kabushiki Kaisha

Takeshi Komuro

Toshinari Miura

Katsuhiro Matsuda

Kie Yutaka

Hirohide Matsuhisa

Shinji Eritate

Hitoshi Horie

Provided is a polymer compound having a furan ring having a degree of polymerization of 185 or more and 600 or less. This polymer compound has excellent mechanical strength (flexural strength).

Polymer compound and method of synthesizing the same

The present invention provides a flame retardant composition including a flame retardant that is extracted from a plant and can exhibit high flame retardancy. The flame retardant composition includes a flame retardant compound represented by Formula (1) and polybutylene terephthalate. The content of the flame retardant compound is 12% by weight or more and 15% by weight or less based on the total weight of the flame retardant compound and the polybutylene terephthalate. In Formula (1), Rto Rrepresent substituents.

Flame retardant composition

Provided is a flame retardant composition containing a flame retardant compound and a polymer containing styrene or aromatic polyester represented by General Formula (1) 

A flame retardant composition contains the flame retardant described in Claim, aromatic polyester, a styrene polymer, rubber having a siloxane bond, and a fluorine compound.

The present invention provides a chemical sealing film which has high chemical resistance and high breaking strength and which does not contain chlorine. The present invention relates to a chemical sealing film containing an organic compound represented by general formula (1) shown in Claim. In general formula (1), R is a linear alkylene group having carbon atoms of 5 or more and 10 or less and n is an integer of 10 or more and 480 or less.

Chemical sealing film

A polyester resin that includes a furandicarboxylate, has excellent heat resistance, and can be used for producing a molding product. The polyester resin is provided by copolymerizing a diol having an amino group. The polyester resin includes a structural unit represented by formulae formula (1) and a structural unit represented by formula (2) that has an amide bond:  

Polyester resin, method of producing the resin, and molding product

Provided is a method of producing FDCA by which high-purity FDCA can be produced in high yield. 2,5-furandicarboxylic acid is produced by: bringing 5-hydroxymethylfurfural into contact with an oxidant in an organic acid solvent in the presence of bromine and a metal catalyst; and allowing 5-hydroxymethylfurfural and the oxidant to react with each other while removing water produced by the reaction.

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Matsudo, Japan

Takeshi Komuro