Composition forming an insulating layer and use of said composition

Patent metadata

Field	Value
Publication number	US-10273370-B2
Application number	US-201414780356-A
Country	US
Kind code	B2
Filing date	Mar 26, 2014
Priority date	Mar 26, 2013
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

The invention relates to a composition forming an insulating layer, which composition contains a binder, which is based on a compound having electron-deficient carbon multiple bonds and a carbanion-forming compound. By means of the composition according to the invention, the expansion rate of which is relatively high, coatings having the layer thickness required for the particular fire resistance time can be applied easily and quickly, wherein the layer thickness can be reduced to a minimum and nevertheless a great insulating effect can be achieved. The composition according to the invention is suitable especially for fire protection, in particular as a coating of steel components, such as supports, beams and truss members, for increasing the fire resistance time.

First claim

The invention claimed is:

1. A coating composition comprising:
(a) an ingredient A that contains a polyfunctional Michael acceptor that has at least two electron-deficient carbon multiple bonds per molecule as functional Michael acceptor groups,
wherein the functional Michael acceptor groups have the structure (III):

in which
R 1 , R 2 and R 3 are each hydrogen; Y represents OR 5 , wherein R 5 is hydrogen or a linear, branched, or cyclical, optionally substituted alky group;
(b) an ingredient B that contains a polyfunctional Michael donor that has at least two C, H acid groups per molecule as functional Michael donor groups,
wherein the functional Michael donor groups are β-ketoesters;
(c) an ingredient C that contains an additive that forms an insulation layer,
wherein the additive forming the insulation layer is a mixture comprising at least one dehydrogenation catalyst and at least one propellant; and
(d) a catalyst for the Michael addition reaction,
wherein the coating composition forms an insulation layer upon exposure to heat.

2. The composition of claim 1 , wherein each functional Michael acceptor group is attached by means of one or more of R 1 , R 2 , R 3 , or R 5 to another functional Michael acceptor group, which can be identical or different, or directly attached to a backbone.

3. The composition of claim 2 , wherein the functional Michael acceptor groups are bonded by means of R 5 to a polyol compound, an oligomer or polymer.

4. The composition of claim 3 , wherein the functional Michael acceptor groups or the functional Michael donor groups are each independently bonded to a polyol compound that is selected from the group consisting of pentaerythritol, trimethylolpropane, ethylene glycol and polyethylene glycols, propylene glycols and polypropylene glycols.

5. The composition of claim 1 , wherein the composition has a reactive equivalent ratio in the range of 0.1:1 to 10:1.

6. The composition of claim 1 , wherein the additive forming the insulation layer further comprises at least one carbon supplier.

7. The composition of claim 6 , wherein the additive forming the insulation layer further comprises an ash crust stabilizer.

8. The composition of claim 1 , wherein the composition also contains organic and/or inorganic additives.

9. The composition of claim 1 , wherein the composition is packaged as a two-component or multi-component system.

10. The composition of claim 9 ,
wherein the ingredient C is contained in a single component of the two-component or multi-component system; or
wherein the ingredient C is contained in multiple components of the two-component or multi-component system in the form of a complete mixture or in the form of individual components.

11. The composition of claim 7 ,
wherein the composition is packaged as a two-component or multi-component system, and
wherein the ash crust stabilizer is contained in one component of the two-component or multi-component system, or
wherein the ash crust stabilizer is divided among the components of the two-component or multi-component system.

12. A coating comprising the composition of claim 1 .

13. The coating of claim 12 , wherein the coating is for steel construction elements.

14. The coating of claim 12 , wherein the coating is for non-metallic components.

15. The coating of claim 12 , wherein the coating is a fire protection coating.

Assignees

• Hilti Ag

Inventors

• Lang Martin

Classifications

• C09D5/185 Primary

  Intumescent paints · CPC title

• C08K3/22

  of metals · CPC title

• C08K2003/262

  Alkali metal carbonates · CPC title

• C08K5/00

  Use of organic ingredients · CPC title

• C08K2003/2241

  Titanium dioxide · CPC title