Fujifilm Corporation

Toshimitsu Sakuma

Takayuki Ito

Kozo Sato

Shigeki Uehira

Toshihide Yoshitani

Sumiaki Yamasaki

Takafumi Hosokawa

Kiyotaka Fukagawa

Masayuki Harada

Provided is a polyester polymer including a repeating unit derived from a dicarboxylic acid compound containing a partial structure represented by the following Formula (C) and a repeating unit derived from a diol compound containing a cyclic structure, in which the partial structure represented by Formula (C) constitutes a portion of the main chain: 

Polyester polymer, resin composition, molded product, and film

Provided is a dehydroabietic acid polymer including a skeleton of the following formula (A) as a repeating unit: wherein L represents a divalent organic group. Methods for producing the dehydroabietic acid polymer are also provided. The dehydroabietic acid polymer has high resistance against moisture and water and high impact resistance. The dehydroabietic acid polymer can also be produced from a rosin-derived natural product.

Dehydroabietic acid polymer, compact, method for producing dehydroabietic acid polymer, and dehydroabietic acid compound

Provided is a polyamide polymer in which a partial structure represented by the following formula (C) constitutes a portion of the main chain: 

Polyamide polymer, method for producing same, resin composition, molded product, fiber, film, and porous film

A method of producing a fluorine-containing polymer, containing conducting an addition polymerization of a fluorine-containing compound having 2 or more terminal fluorine-containing vinyl groups each directly bonded to an oxygen atom per molecule, and a compound having 2 or more groups represented by &#x2014;XH, where X represents an oxygen atom or a sulfur atom; and a fluorine-containing polymer comprising a repeating unit represented by formula (i): wherein Rfrepresents a perfluoroalkylene group; each of Rfand Rfindependently represents a fluorine atom, a perfluoroalkyl group or a perfluoroalkoxy group; at least two among Rf, Rfand Rfmay bond to each other to form a ring structure; X represents an oxygen atom or a sulfur atom; and L represents a divalent organic group.

Fluorine-containing polymer and method of producing fluorine-containing polymer

A fluorine-containing ether compound with a fluorine content increased, the fluorine content being enhanced by fluorinating a polymer including a repeating unit represented by the following Formula (I): wherein Rhrepresents a divalent linkage group; Rfrepresents an perfluoroalkylene group; each of Rfand Rfindependently represents a fluorine atom, a perfluoroalkyl group or a perfluoroalkoxy group, and any two of Rf, Rfand Rfmay be combined with each other to form a ring.

Fluorine-containing ether compound

A fluorine-containing spiroacetal compound represented by the following formula (A): 

Fluorine-containing spiroacetal compound and method of producing the same

A method of producing a spirocyclic acetal compound of formula (II), having subjecting a compound of formula (I) and pentaerythritol to dehydration condensation, in the presence of a solid acid catalyst; and the polymer having a repeating unit represented by formula (III), which is produced using the spirocyclic acetal compound of formula (II): wherein Rrepresents an alkyl, cycloalkyl or aryl group, Q represents a hydrogen atom or an acyl group, L represents a divalent linking group having at least one carbon atom, and n is 0 or 1.

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Minami-ashigara, Japan

Toshimitsu Sakuma