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Flame-retardant mechanical foam

A foam and flame retardant technology, applied in coatings, textiles and papermaking, polyurea/polyurethane coatings, etc., to achieve good flame retardant performance

Pending Publication Date: 2022-08-02
STAKHL INT BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In AU 2017 / 213139, graphite is used within the coating and therefore only provides limited flame retardant properties

Method used

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  • Flame-retardant mechanical foam
  • Flame-retardant mechanical foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1: Aeronautical Test Method - Comparison with Paste Coatings

[0047] A mixture was prepared containing 50 parts Permutex RU-92-213 (polyurethane dispersion, available from StahlEurope BV), 50 parts Eagleban FRC-0387 (product containing uncoated diammonium hydrogen phosphate as flame retardant, available from StahlEurope BV) from Stahl Europe BV), 7 parts of a 30% aqueous solution of ammonium stearate and 1 part of Permutex XR-13-554 (polycarbodiimide crosslinker, available from Stahl Europe BV). The mixture was mechanically foamed and the resulting foam was applied to aerospace fabrics (hydroentanglement and fiber production). The foam was then dried at 80°C for 4 minutes, and then at 120°C for 2 minutes in order to speed up drying.

[0048] As a reference, a paste containing Eagleban FRC-0387, a product containing diammonium hydrogen phosphate as a flame retardant, available from Stahl Europe BV, was used. The reference was applied to aerospace fabrics (hydr...

Embodiment 2

[0054] Example 2: Upholstery Test Method - Comparison with Collapsible Foam

[0055] A mixture was prepared containing 50 parts Permutex RU-92-213 (a polyurethane dispersion available from Stahl Europe BV), 50 parts Eagleban FRC-0387 (a non-coated diammonium hydrogen phosphate containing as flame retardant (available from Stahl Europe BV) and 7 parts of a 30% aqueous solution of ammonium stearate. The mixture was mechanically foamed to a density of 200 g / L by mixing at high speed with a stirrer, and the resulting foam was coated on a 100% polyester based velour textile with a layer thickness of 100 g / m 2 amount of dry layer. The foam was then dried at 80°C for 4 minutes, and then at 110°C for 2 minutes in order to speed up drying. The solids content of Permutex RU-92-213 is 60%. Eagleban FRC-0387 has a solids content of 52.5%, of which 7.5% is polymer resin and 45% is from fillers, including flame retardant components. The mixture of 50 parts Permutex RU-92-213 and 50 part...

Embodiment 3

[0059]Example 3: Furniture Upholstery Test Method - Comparison with Collapsible Foam

[0060] 50 parts Permutex RU-92-213 (polyurethane dispersion, available from Stahl Europe BV), 50 parts Eagleban FRC-0387 (a product containing uncoated diammonium hydrogen phosphate as flame retardant, available from Stahl Europe BV) were prepared obtained), a mixture of 7 parts of a 30% aqueous solution of ammonium stearate and 1 part of Permutex XR-13-554 (polycarbodiimide crosslinker, available from Stahl Europe BV). The mixture was mechanically foamed to a density of 200 g / L and the resulting foam was coated with a blade on a 100% polyester based textile with a layer thickness of 0.95 mm. The foam was then dried at 80°C for 4 minutes, followed by 2 minutes at 120°C for faster drying. The solids content of Permutex RU-92-213 is 60%. The solids content of Permutex XR-13-554 is 100%. Eagleban FRC-0387 has a solids content of 52.5%, of which 7.5% is polymer resin and 45% is from fillers, ...

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Abstract

The present invention provides a method of producing a coating or layer on a substrate, comprising: mechanically foaming a mixture comprising one or more polyurethane dispersions, one or more flame retardants, one or more foam stabilizers, and optionally one or more cross-linking agents, where the flame retardants may be halogen-based or halogen-free; then coating the mixture as foam on a substrate; optionally subsequently adding flocked fibers; then drying; wherein the foam has flame retardant properties and remains present as a stable pressure resistant dry foam.

Description

technical field [0001] The present invention relates to a method for producing a coating or layer on a substrate, wherein a foam is applied which is foamed by mechanical action and has flame retardant properties. Background technique [0002] Several methods have been developed to obtain flame retardant surfaces by using halogen-containing or halogen-free systems. In addition to the chemical factors involved, the method by which the coating is applied to the substrate can also affect flame retardant performance, with the method of application having specific advantages and disadvantages. The present invention focuses on non-rigid substrates such as woven textiles, non-woven textiles and knitted fabrics which can be used as household and decorative textiles or technical textiles, such as curtains, furniture and carpets. [0003] One way to obtain a flame retardant surface is to use a paste coating, which generally has good efficiency and adhesion to the surface. However, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/18C08J9/35C09D175/04
CPCC09D5/18C09D175/04C08G2101/00C08G2110/0066C08J2375/04C08J2201/026C08J9/0038C08J9/30C08J9/0023D06N3/0047D06N3/0059D06N3/0061D06N3/14D06N2209/067C08J9/0085C08J9/0066C09D5/185D06M15/568D06M2200/30
Inventor 扬·马塞尔·毛里斯·特尔拉斯
Owner STAKHL INT BV
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