The present invention relates to reaction products H of at least one cyclic urea U, at least one multifunctional aldehyde A and at least one polyol P, process for preparing thereof and compositions comprising thereof.

A curable aminoplast acrylic polyol composition containing, based on the complete weight of the solids of the composition, (a) 50 to 85% by weight of an acrylic polyol having a glass transition temperature Tg of from 50 to 70 C., an equivalent weight of hydroxyl groups on solids of from 320 to 400, and a hydroxyl number on solids of from 130 to 180 mg KOH/g, (b) 15 to 50% by weight of an alkylated amino formaldehyde resin having a formaldehyde content in accordance with DIN EN ISO 11402 4.3 of less than 0.10%, and the amino compound is melamine, guanamine, benzoguanamine, urea, toluenesulfonamide and glycoluril, containing at least two types of alkyl groups having 1 to 12 carbon atoms, and (c) 0.5 to 5.0% by weight of at least one type of an acidic catalyst, together with a process for preparation of the composition and methods of using the composition.

A curable aminoplast acrylic polyol composition containing, based on the complete weight of the solids of the composition, (a) 50 to 85% by weight of an acrylic polyol having a glass transition temperature Tg of from 50 to 70 C., an equivalent weight of hydroxyl groups on solids of from 320 to 400, and a hydroxyl number on solids of from 130 to 180 mg KOH/g, (b) 15 to 50% by weight of an alkylated amino formaldehyde resin having a formaldehyde content in accordance with DIN EN ISO 11402 4.3 of less than 0.10%, and the amino compound is melamine, guanamine, benzoguanamine, urea, toluenesulfonamide and glycoluril, containing at least two types of alkyl groups having 1 to 12 carbon atoms, and (c) 0.5 to 5.0% by weight of at least one type of an acidic catalyst, together with a process for preparation of the composition and methods of using the composition.

A curable aminoplast acrylic polyol composition containing, based on the complete weight of the solids of the composition, (a) 50 to 85% by weight of an acrylic polyol having a glass transition temperature Tg of from 50 to 70 C., an equivalent weight of hydroxyl groups on solids of from 320 to 400, and a hydroxyl number on solids of from 130 to 180 mg KOH/g, (b) 15 to 50% by weight of an alkylated amino formaldehyde resin having a formaldehyde content in accordance with DIN EN ISO 11402 4.3 of less than 0.10%, and the amino compound is melamine, guanamine, benzoguanamine, urea, toluenesulfonamide and glycoluril, containing at least two types of alkyl groups having 1 to 12 carbon atoms, and (c) 0.5 to 5.0% by weight of at least one type of an acidic catalyst, together with a process for preparation of the composition and methods of using the composition.

[Problem] The purpose of the present invention is to provide a resist underlayer film-forming composition that can further improve properties of a resist underlayer film, such as curing properties, heat resistance, etching resistance, planarization properties and embedding properties. [Solution] Provided is a resist underlayer film-forming composition characterized by containing a solvent and a novolac resin containing a side chain having a structure represented by formula (D). In formula (D), Ar.sup.2 is an aromatic ring. Formula (D): OAr.sup.2. The novolac resin contains a conjugated unit structure A-B represented by formula (AB). A unit structure A contains a phenol unit structure and/or an amine unit structure.

##STR00001##

[Problem] The purpose of the present invention is to provide a resist underlayer film-forming composition that can further improve properties of a resist underlayer film, such as curing properties, heat resistance, etching resistance, planarization properties and embedding properties. [Solution] Provided is a resist underlayer film-forming composition characterized by containing a solvent and a novolac resin containing a side chain having a structure represented by formula (D). In formula (D), Ar.sup.2 is an aromatic ring. Formula (D): OAr.sup.2. The novolac resin contains a conjugated unit structure A-B represented by formula (AB). A unit structure A contains a phenol unit structure and/or an amine unit structure.

##STR00001##

The present invention relates to reaction products H of at least one cyclic urea U, at least one multifunctional aldehyde A and at least one polyol P, process for preparing thereof and compositions comprising thereof.

The present invention relates to reaction products H of at least one cyclic urea U, at least one multifunctional aldehyde A and at least one polyol P, process for preparing thereof and compositions comprising thereof.

The present invention relates to reaction products H of at least one cyclic urea U, at least one multifunctional aldehyde A and at least one polyol P, process for preparing thereof and compositions comprising thereof.

A coating material includes 10 to 30 wt.-% of a polyol, 2 to 15 wt.-% of an etherified melamine-formaldehyde resin, 0.1 to 10 wt.-% of an acid catalyst, and at least one of a flame retardant, a filler, and a pigment in an amount to obtain a filler content in a range of from 60 to 80 wt.-% based on an overall mass of the coating material. The flame retardant is selected from the group consisting of an inorganic flame retardant, a halogenated flame retardant, a nitrified flame retardant, a boracic flame retardant, an intumescent flame retardant, and mixtures thereof.