# US 8,739,837 B2 · Insulating molded part

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,739,837 B2
- Document ID: US8739837B2
- Status: Granted
- Kind: B2
- Application number: 13/274,320
- Filed: 2011-10-15
- Published: 2012-05-03
- Granted: 2014-06-03
- Earliest claimed: 2010-10-20
- Assignees: Isolite GmbH
- Applicants: Matthias Kroll; Armin Buchsteiner
- Inventors: Matthias Kroll; Armin Buchsteiner
- Web page: https://patentgrep.com/patent/US8739837B2

## CPC

- F01N 13/16: Selection of particular materials
- F16L 59/026: {Mattresses, mats, blankets or the like}
- Y10T 428/249924: Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An insulating molded part for a hot gas conducting component, in particular an exhaust system of an internal combustion engine, is described, which exhibits increased mechanical strength by using an insulating fibrous tissue.

## Claims

### Claim 1

An insulating molded part for use in an exhaust system of an internal combustion engine comprising:
a conduit;
an insulated molded part formed around said conduit, said insulated molded part made of an insulating fibrous tissue;
a binder, said binder solidifying the insulating fibrous tissue;
a heat absorbing color pigment admixed to said binder;
a heat reflecting color pigment admixed to said binder; and
a cover covering said insulated molded part,
whereby temperature increases during warm-up time reducing NOx values and CO2 emissions.

### Claim 2 (depends on 1)

An insulating molded part for use in an exhaust system of an internal combustion engine as in claim 1 wherein:
said heat absorbing color pigment comprise black color pigments; and
said heat reflecting color pigment comprise yellow color pigments.

### Claim 3 (depends on 2)

An insulating molded part for use in an exhaust system of an internal combustion engine as in claim 2 wherein:
the black color pigments comprise a copper chromite black spinell; and
the yellow color pigments comprise a buff rutile on the basis of chrome, antimony and titanium.