A rubber composition comprises at least one phenol-aldehyde resin based on: at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two OH groups in the meta position relative to one another, the two positions ortho to at least one of the OH groups being unsubstituted; and at least one aldehyde of formula W: ##STR00001##
wherein each Ar.sub.1 and Ar.sub.2 group represents, independently of one another, an optionally substituted aromatic ring; and wherein SP is a connecting group that connects at least the Ar.sub.1 and Ar.sub.2 groups to one another, SP separating the Ar.sub.1 and Ar.sub.2 groups by at least 2 covalent bonds.

The present invention provides a resist base material containing a compound having a specific structure and/or a resin derived from the compound as a monomer.

The present invention provides a resist base material containing a compound having a specific structure and/or a resin derived from the compound as a monomer.

A resin composition contains a (A) thermoplastic component, a (B) thermosetting component, and a (C) inorganic filler, 5%-weight-reduction temperature of a hardened substance of the resin composition being 440 degrees C. or more.

A resin composition contains a (A) thermoplastic component, a (B) thermosetting component, and a (C) inorganic filler, 5%-weight-reduction temperature of a hardened substance of the resin composition being 440 degrees C. or more.

Provided is a laminate which comprises a layer of a polyimide resin and a layer of an unvulcanized rubber composition, and wherein the rubber composition contains (A) a rubber component, (B) 20-100 parts by mass of a polyamide polyether elastomer per 100 parts by mass of the rubber component (A), (C) a condensation product of formaldehyde and a compound represented by formula (1) (wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an alkyl group having 1-8 carbon atoms, a hydroxyalkyl group having 1-8 carbon atoms and an alkoxide group having 1-8 carbon atoms), (D) a methylene donor and (E) a vulcanizing agent. A laminate according to the present invention exhibits improved bonding strength between a layer of a polyimide resin and a layer of a rubber composition.

Provided is a laminate which comprises a layer of a polyimide resin and a layer of an unvulcanized rubber composition, and wherein the rubber composition contains (A) a rubber component, (B) 20-100 parts by mass of a polyamide polyether elastomer per 100 parts by mass of the rubber component (A), (C) a condensation product of formaldehyde and a compound represented by formula (1) (wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an alkyl group having 1-8 carbon atoms, a hydroxyalkyl group having 1-8 carbon atoms and an alkoxide group having 1-8 carbon atoms), (D) a methylene donor and (E) a vulcanizing agent. A laminate according to the present invention exhibits improved bonding strength between a layer of a polyimide resin and a layer of a rubber composition.

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aldehyde of formula (A): ##STR00001##
in which X comprises N, S or O, and R represents H or CHO.

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aldehyde of formula (A): ##STR00001##
in which X comprises N, S or O, and R represents H or CHO.

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aldehyde of formula (A): ##STR00001##
in which X comprises N, S or O, and R represents H or CHO.