US 12,312,513 B2 · Two component polyurethane system for liquid applied sound deadener

Abstract

A method for producing a coating on a surface of a component part or a device, the method comprises obtaining a two component polyurethane system having a Component A and a Component B, Component A comprises a polyol and Component B comprises an isocyanate. Either Component A or Component B or both components comprise a filler. The method includes mixing Components A and B, to form a mixture comprising the polyol, the isocyanate, and the filler. The method includes applying the mixture to a surface of a component part or a device to form a coating from the mixture; and allowing the applied coating to cure. The steps of applying the coating and allowing the applied coating to cure are performed at an ambient temperature, and the viscosity of the mixture immediately after the mixing step is from 10 Pas to 500 Pas at 23° C.

Claims16

Dependent claims

A method for producing a coating on a surface of a substrate, the method comprising:

a. mixing a Component A and a Component B to form a mixture, wherein Component A comprises a polyol and Component B comprises an isocyanate, wherein a ratio of isocyanate groups to polyol hydroxyl groups in the mixture is from 0.55 to 1.0, and wherein either Component A or Component B or both components comprise a filler;
b. applying the mixture as a liquid through a flat stream extruder to a surface of a substrate to form a coating;
and
c. allowing the coating to cure,
wherein steps b) and c) are performed at an ambient temperature from 10° C. to 40° C., and the viscosity of the mixture immediately after step b) is from 10 Pas to 500 Pas at 23° C. when measured with a Brookfield RV viscometer at 10 rpm using an RV-7 spindle.

2 more elements

A method for producing a sound deadening coating on a surface of a substrate, the method comprising:

a. mixing a Component A and a Component B to form a mixture, wherein Component A comprises a polyol and Component B comprises a polymeric isocyanate based on MDI, and wherein either Component A or Component B or both components comprise a filler;
b. applying the mixture as a liquid through a flat stream extruder to a surface of a substrate to form a coating;
and
c. allowing the coating to cure to produce a sound deadening coating,
wherein steps b) and c) are performed at an ambient temperature of from 10° C. to 40° C., and wherein the maximum loss factor at 2nd order (100-150 Hz) of the sound deadening coating is 0.1 or greater when measured at a temperature from 0° C. to 60° C. according to DIN EN ISO 6721:1996 procedure A for a sound deadening coating thickness of three mm.

2 more elements

Dependencies are inferred from the claim text.

Two component polyurethane system for liquid applied sound deadener

Life of this patent

Two component polyurethane system for liquid applied sound deadener

Life of this patent

Abstract

Claims16