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Reduction of voc emissions from low density cavity filling nvh polyurethane foams

A polyurethane foam, emission technology, applied in the field of reaction systems

Inactive Publication Date: 2010-01-06
BAYER MATERIALSCIENCE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it can be seen that there are concerns regarding exposure of workers in areas where such foams are applied (e.g., automotive assembly areas) to volatile organic compounds (VOCs) emitted from the raw materials of the foam system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0080] The following components were used in the working examples of the invention:

[0081] Isocyanate A : Polymethylene poly(phenyl isocyanate) with an NCO group content of about 31%, a functionality of about 3.1, a polymer content of about 68.5% by weight, and a monomer content of about 31.5% by weight, wherein the monomer consists of Composition of about 3% by weight of the 2,4'-isomer and about 28.5% by weight of the 4,4'-isomer.

[0082] Polyol A : A polymer polyol with a molecular weight of about 8330, a functionality of about 3, and a hydroxyl number of about 20, comprising about 43% by weight of SAN solids

[0083] Polyol B : Propoxylated polyether polyol starting from ethylenediamine, its molecular weight is about 3470, its functionality is about 3.7, and its OH value is about 60

[0084] Polyol C : Propoxylated polyether polyol starting from monoethanolamine, its molecular weight is about 240, its functionality is about 3, and its OH value is about 700

[0...

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Abstract

This invention relates to reactive systems for the production of low density, cavity filling polyurethane foams for NVH (noise vibration and harshness) application areas in which the system exhibits reduced VOC emissions. These foams comprises an isocyanate-reactive component having a viscosity of at least about 3,000 mPa.s, at 23 DEG C., and comprises at least one amine-initiated compound which contains isocyanate-reactive groups.

Description

Background of the invention [0001] The present invention relates to a reaction system used in the production of cavity filling low density polyurethane foams for NVH (noise vibration and harshness) applications, which system exhibits VOC (volatile non-volatile organic components) emissions are reduced. These foams contain isocyanate-reactive components, one or more of which preferably start with starters containing amine groups. [0002] Cavity-filling low-density polyurethane foams are suitable replacements for plug-in bulkheads that suppress the transmission of noise through vehicle body structures because of their cost and performance advantages. However, it can be seen that there are concerns regarding exposure of workers in areas where such foams are applied (eg, automotive assembly areas) to volatile organic compounds (VOCs) emitted from the raw materials of the foam system. VOC emissions, which are typically measured according to US EPA Method 24, can be reduced accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/50C08G18/66C08G18/76C08J9/00C08J9/08C08G101/00
CPCC08G2350/00C08G2101/005C08G18/632C08G2290/00C08G2101/0083C08G18/5024C08G18/4072C08G2110/005C08G2110/0083C08G18/66C08G18/76C08G2101/00C08J9/08
Inventor J·W·杰尼D·A·拉多维奇K·H·萨姆纳
Owner BAYER MATERIALSCIENCE AG
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