US4409340A — Heat-curable coating composition, its use and pro…

Claim 1

Independent Claim 116 words

Heat-curable coating composition, consisting essentially of (A) a prepolymer with an average molecular weight of 500 to 15,000, which includes on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR5## in which R represents hydrogen or a methyl group, ##STR6## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1.

Claim 2

Dependent Claim 116 words

Heat-curable coating composition, consisting essentially of (A) a prepolymer with an average molecular weight of 500 to 15,000, which includes on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR5## in which R represents hydrogen or a methyl group, ##STR6## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1.

Claim 3

Dependent Claim 42 words

Coating composition according to claim 1, characterized by the fact that the prepolymer of component (A) is the ketoxime-blocked reaction product of a polyether or a polyester having 2 to 6 hydroxyl groups with an isocyanate containing 2 to 3 isocyanate groups.

Claim 4

Dependent Claim 29 words

Process for coating substrates by applying a heat-curable coating composition and curing, characterized by the fact that the coating is carried out with the coating composition of claim 1.

Claim 5

Dependent Claim 26 words

Process according to claim 3, characterized by the fact that the coating is a protective layer on motor vehicles as protection against the impact of stones.

Claim 6

Dependent Claim 24 words

Process according to claim 4, characterized by the fact that the stone-impact protective layer is a layer of a paint system with several layers.

Claim 7

Dependent Claim 31 words

Process according to claim 5, characterized by the fact that a further known coat of paint is applied to the stone-impact protective layer and cured together with the stone-impact protective layer.

Claim 8

Dependent Claim 19 words

Process of using the coating composition according to claim 1 for the production of protective coatings on motor vehicles.

Claim 9

Dependent Claim 18 words

Process according to claim 7 comprising use of the coating composition for the production of stone-impact protective layers.

Claim 10

Dependent Claim 24 words

Process according to claim 8, characterized by the fact that the stone-impact protective layer is a layer of a paint system with several layers.

Claim 11

Dependent Claim 31 words

Process according to claim 9, characterized by the fact that a further known coat of paint is applied on the stone-impact protective layer and cured together with the stone-impact protective layer.

Claim 12

Dependent Claim 134 words

An impact protective paint comprising a heat-curable coating composition, including (A) a prepolymer with an average molecular weight of 500 to 15,000, which includes on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR7## in which R represents hydrogen or a methyl group, ##STR8## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1, said heat-curable coating composition comprising one layer of a paint system of several layers.

Claim 13

Dependent Claim 134 words

An impact protective paint comprising a heat-curable coating composition, including (A) a prepolymer with an average molecular weight of 500 to 15,000, which includes on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR7## in which R represents hydrogen or a methyl group, ##STR8## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1, said heat-curable coating composition comprising one layer of a paint system of several layers.

Claim 14

Dependent Claim 24 words

Paint according to claim 11, wherein the coating composition layer and a further paint layer are cured by curing together in one processing step.

Claim 15

Dependent Claim 11 words

Paint according to claim 11, wherein the coating composition is cured.

Claim 16

Dependent Claim 144 words

Process for coating a protective layer on motor vehicles as protection against the impact of stones which comprise applying a heat-curable coating composition and curing, characterized by the fact that the coating composition includes: (A) a prepolymer with an average molecular weight of 500 to 15,000, which contains on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR9## in which R represents hydrogen or a methyl group, ##STR10## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1.

Claim 17

Dependent Claim 144 words

Process for coating a protective layer on motor vehicles as protection against the impact of stones which comprise applying a heat-curable coating composition and curing, characterized by the fact that the coating composition includes: (A) a prepolymer with an average molecular weight of 500 to 15,000, which contains on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR9## in which R represents hydrogen or a methyl group, ##STR10## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1.

Claim 18

Dependent Claim 21 words

Process according to claim 14, wherein the stone impact protective layer is a layer of a paint system with several layers.

Claim 19

Dependent Claim 31 words

Process according to claim 15, characterized by the fact that a further known coat of paint is applied to the stone impact layer and cured together with the stone impact layer.

Claim 20

Dependent Claim 130 words

A metal part protected by an impact resistant paint which comprises a heat-cured coating composition, including the cured product of (A) a prepolymer with an average molecular weight of 500 to 15,000, which includes on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR11## in which R represents hydrogen or a methyl group, ##STR12## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1.

Claim 21

Dependent Claim 130 words

A metal part protected by an impact resistant paint which comprises a heat-cured coating composition, including the cured product of (A) a prepolymer with an average molecular weight of 500 to 15,000, which includes on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR11## in which R represents hydrogen or a methyl group, ##STR12## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1.

Claim 22

Dependent Claim 25 words

The protected metal part of claim 17, wherein the coating composition and a further paint layer are cured by curing together in one processing step.

Claim 23

Dependent Claim 117 words

An essentially non-aqueous heat-curable coating composition, comprising (A) a prepolymer with an average molecular weight of 500 to 15,000, which contains on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR13## in which R represents hydrogen or a methyl group, ##STR14## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1.

Claim 24

Dependent Claim 117 words

An essentially non-aqueous heat-curable coating composition, comprising (A) a prepolymer with an average molecular weight of 500 to 15,000, which contains on the average 2 to 6 ketoxime-blocked NCO groups, which are linked via cycloaliphatic and/or aliphatic groups to the prepolymer, (B) a cross linker from the group of amines having the formula ##STR13## in which R represents hydrogen or a methyl group, ##STR14## (C) organic solvents in an amount of 0 to 50 weight percent based on the total weight of the coating composition, (D) optionally pigments, fillers, blowing agents and other known additives, the equivalent ratio of blocked NCO groups of component (A) to NH 2 groups of component (B) lying between 1.3:1 and 0.75:1.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1986-10-10	1987-04-11	1987-10-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1990-10-10	1991-04-11	1991-10-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1994-10-10	1995-04-11	1995-10-11	$7700.00	Window Closed / Lapsed

Heat-curable coating composition, its use and process for coating substrates

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