Kaneka Corporation

Toshihiko Okamoto

Katsuyu Wakabayashi

Hiroshi Ando

Junji Takase

Makoto Chiba

Masashi Sakaguchi

Masato Kusakabe

Hiroshi Iwakiri

Toyohisa Fujimoto

Noriko Matsushita

Shohei Nishimori

Hiroshi Ito

Ayako Yano

Kiyoshi Miyafuji

Jyunji Takase

Sadao Yukimoto

Shintaro Komitsu

Katsuhiro Ando

Masayuki Wakioka

Yoshimichi Yamanaka

Kazuo Hagiwara

Noriko Noro

Yu Itano

Yuriko Asai

Yoshikazu Morii

Katsuyu Osaka Factory Kaneka Corp Wakabayashi

Katsuyu c/o Osaka Factory Wakabayashi

Noriko c/o Kaneka Corporation Noro

A method of adhesion provides excellent workability by using a curable resin composition whose viscosity has low temperature dependence. The method of adhesion includes a step of heating a curable resin composition and applying a curable resin composition, a step of spreading the curable resin composition, and a step of curing the curable resin composition. The curable resin composition contains specific amounts of an epoxy resin, fine polymer particles that have a core-shell structure including a core layer and a shell layer, and blocked urethane having a latent NCO % of 0.1% to 2.9%.

Adhesion method employing polymer microparticle-containing curable resin composition having excellent workability, and laminate obtained using said adhesion method

One or more embodiments of the present invention provide an adhesion method that provides excellent workability by using a curable resin composition whose viscosity has low temperature dependence. The method of adhesion includes a step of applying a curable resin composition, a step of spreading the curable resin composition, and a step of curing the curable resin composition. The curable resin composition contains specific amounts of an epoxy resin, fine polymer particles whose shell layers have a cyano group in a specific amount, and blocked urethane.

The object of the present invention is to provide a curable composition for forming a cured product having high tensile strength and high elongation. A polyurethane curable composition of the present invention contains a polyol (A) and a polyisocyanate (B) as an essential component, wherein the composition contains polymer fine particles (C) having a core-shell structure including at least two layers of a core layer and a shell layer, the polymer fine particles (C) are contained in an amount of 1 to 150 parts by mass per 100 parts by mass of a total amount of the polyol (A) and the polyisocyanate (B), the core layer has a glass transition temperature (Tg) of more than 0&#xb0; C. as calculated by the following numerical formula (1), a cured product formed by the curable composition has an elongation of more than 47% at a maximum tensile stress,1/=&#x3a3;()&#x2003;&#x2003;(1)

Polyurethane curable composition containing polymer fine particles excellent in mechanical strength

The present invention relates to a curable resin composition comprising a polyol (A) having an average hydroxyl value of 200 to 1500 mg KOH/g, a polyisocyanate (B), and polymer fine particles (C), and a curable resin composition comprising a polyol (A), a polyisocyanate (B), and polymer fine particles (C), wherein the polyol (A) comprises a polyester polyol (a2) as an essential component, and the amount of the polyester polyol (a2) is not less than 20 parts by mass per 100 parts by mass of the polyol (A).

Curable resin composition, structural adhesive, coating material or fiber reinforced composite material using the same, foam body using the same, laminate using the same, and cured material thereof

The present invention relates to a curable resin composition containing 100 parts by mass of an epoxy resin (A), 1 to 100 parts by mass of polymer fine particles (B), and 1 to 100 parts by mass of a blocked urethane (C), wherein the polymer fine particles have a core-shell structure of a core layer and a shell layer, the core layer contains diene rubber, the shell layer contains at least a hydroxyl group, and the content of the hydroxyl group of the polymer fine particles (B) is 0.01 to 0.8 mmol/g.

Polymer fine particle-containing curable resin composition having improved bonding strength against impact peeling

A curable resin composition of the present invention contains 1 to 100 parts by mass of a polymer fine particle (B) relative to 100 parts by mass of an epoxy resin (A), wherein the polymer fine particle has a core-shell structure, the core layer of the polymer fine particle is diene rubber, the content of the epoxy group of the polymer fine particle (B) is 0.01 to 0.2 mmol/g. A curable resin composition (I) of the first embodiment contains 0.5 to 30 parts by mass of fumed silica as an inorganic filler (C). In addition, a curable resin composition (II) of the second embodiment contains bisphenol A epoxy resin and rubber-modified epoxy resin and/or urethane-modified epoxy resin as the epoxy resin (A).

Polymer fine particle-containing curable resin composition having improved storage stability

An object of the present invention is to provide a curable composition that can be used as sealing materials, adhesives, and the like, has excellent curing properties, and gives a cured product excellent in elongation properties. The object can be attained by means of a curable composition comprising: a reactive silyl group-containing polyether polymer (A) that contains a reactive silyl group with high activity (e.g., (ClCH)(CHO)Si&#x2014;, (CHOCH)(CHO)Si&#x2014;, or CH(CHO)Si&#x2014;CH&#x2014;NH&#x2014;C(&#x2550;O)&#x2014;); and a reactive silyl group-containing polyether polymer (B) that contains a reactive silyl group (e.g., CH(CHO)Si&#x2014; or (CHO)Si&#x2014;) different from that mentioned above and/or a (meth)acrylic polymer (C) containing a reactive silyl group that is not particularly limited.

Curable composition

The present invention provides a curable composition useful as a contact adhesive which has a high rate of initial tack development, high tack strength, and long retention time of the developed tack. The curable composition includes an organic polymer (Q) containing a reactive silyl group, and a linear organic polymer (P) having a number average molecular weight larger than that of the polymer (Q) and having a reactive silyl group containing three hydrolyzable groups at only one terminal. The organic polymer (P) and the organic polymer (Q) are mixed at a mixing ratio (P):(Q), in terms of parts by weight, of 60:40 to 5:95.

The present invention aims to provide a curable composition that, while having practical curability, gives a cured product with excellent recovery, and exhibits excellent curability as well as excellent water-resistant adhesion. The curable composition includes 100 parts by weight of a reactive silyl group-containing organic polymer (A); 0.1 to 10 parts by weight of a dialkyltin disilicate compound (B); and an amino silane coupling agent (C), the dialkyltin disilicate compound (B) being a tin compound containing a bulky alkyl group and a silicate moiety with a C1 or C2 alkoxy group, and the amino silane coupling agent (C) including 1 to 10 parts by weight of an amino silane coupling agent (C1) containing a trialkoxysilyl group, and less than 1 part by weight of an amino silane coupling agent (C2) containing a dialkoxysilyl or monoalkoxysilyl group.

Disclosed are a curable composition characterized by using a curable composition including an organic polymer (A1) having one or more silicon-containing functional groups capable of cross-linking by forming siloxane bonds in which the one or more silicon-containing functional groups capable of cross-linking by forming siloxane bonds are silicon-containing functional groups each having three or more hydrolyzable groups on one or more silicon atoms thereof; and a method for controlling the recovery properties, durability and creep resistance of the cured article. Herewith, the present invention provides a curable composition capable of giving a cured article excellent in recovery properties, durability and creep resistance, and a method for controlling the recovery properties, durability and creep resistance of the cured article.

Curable composition and method for improving recovery properties and creep properties

The present invention has its object to provide, by using a non-organotin curing catalyst, a curable composition having a practical level of curability. Furthermore, the present invention has its object to provide a curable composition excellent in adhesiveness while it secures a practical level of curability. The present invention relates to a curable composition which comprises: (A) an organic polymer containing a silicon-containing group capable of crosslinking by siloxane bond formation and (B) a silanol condensation catalyst: and that the silanol condensation catalyst is an amine compound and that an aqueous solution prepared by adding 5 millimoles of the amine compound to 100 g of a mixed solvent composed of isopropyl alcohol and water in a weight ratio of 10:3 has a pH value of not lower than 13.4 as measured at 23&#xb0; C. according to JIS Z 8802.

The present invention has its object to provide a curable composition which allows slight bleedout of a liquid compound to occur to the cured product and shows good curability and adhesiveness using a non-organotin catalyst, an amine compound, as a silanol condensation catalyst. The present invention relates to a non-organotin-based curable composition which comprises:

The present invention provides a curable composition including: an organic polymer (A) which has on average 1.1 to 50 groups per one molecule thereof each represented by the general formula (1) and has one or more silicon-containing functional groups capable of cross-linking by forming siloxane bonds:&#x2014;NR&#x2014;C(&#x2550;O)&#x2014;&#x2003;&#x2003;(1)wherein Ris a hydrogen atom, or a substituted or unsubstituted monovalent organic group; and a metal carboxylate and/or a carboxylic acid (B), the curable composition giving a cured article excellent in curability and also excellent in heat resistance although a non-organotin catalyst is used.

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Takasago, Japan

Toshihiko Okamoto