Kaneka Corporation

Nobuhiro Hasegawa

Yoshiki Nakagawa

Masayuki Fujita

Yasuo Shimizu

Nao Fujita

Ayako c/o Takasago Plant Yano

Hitoshi c/o Takasago Plant Tamai

Yoshiki Kaneka Corporation Nakagawa

Jiro Okai

Yasuo c/o Takasago Plant Shimizu

Disclosed is a curable composition which can be cured quickly by light. This curable composition is not left uncured even in portions which are not irradiated with light. A cured product of this curable composition is excellent in heat resistance, oil resistance and weather resistance. Specifically disclosed is a curable composition characterized by containing a vinyl polymer having at least one crosslinkable silyl group on average and a vinyl polymer having at least one photocrosslinkable group on average.

Curable composition

The present invention has for its object to provide a curable composition which, despite its low viscosity, gives a cured product with a high gel fraction, low residual tack, low modulus, high elongation and good flexibility. The present invention relates to a curable composition comprising the following two components:

Curable compositions

A liquid sealing agent used for automobile parts, electric parts, various kinds of machine parts and the like exhibits good oil resistance, heat resistance, adhesiveness and flexibility. A vinyl polymer has at least one crosslinkable silyl group and can yield a cured product exhibiting an oil resistance superior to that of a cured product from a reference polymer obtained by replacing the repeating unit thereof with butyl acrylate alone, in any one item of the immersion test according to JIS K 6258 for the land use 3-5 lubricating oil specified in JIS K 2215.

Polymer and liquid gasket for In-Place forming

The present invention has for its object to provide a curable composition which, despite its low viscosity, gives a cured product with a high gel fraction, low residual tack, low modulus, high elongation, and good flexibility. The present invention relates to a curable composition comprising the following two components:

A liquid sealing agent used for automobile parts, electric parts, various kinds of machine parts and the like has encountered a problem that it is difficult to combine good oil resistance, heat resistance, adhesiveness and flexibility. The present invention provides a liquid gasket which improves these problems, and a material thereof. In the present invention, it is used a vinyl polymer which has at least one crosslinkable silyl group and can yield a cured product exhibiting an oil resistance superior to that of a cured product from a polymer obtained by replacing the repeating unit thereof with butyl acrylate alone, in any one item of the immersion test according to JIS K 6258 for the land use 3-5 lubricating oil specified in JIS K 2215.

Polymer and liquid gasket for in-place forming

The present invention is constituted of a curable composition which comprises, as essential components, the following four components:

A curable composition comprises a polyether polymer having at least one crosslinkable functional group and a vinyl polymer compatible therewith having at least one crosslinkable functional group at a terminus. Another aspect includes a compatibilizing agent capable of compatibilizing the polyether polymer and vinyl polymer when added to the mixture thereof.

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Settsu, Japan

Nobuhiro Hasegawa