US20130115447A1 - Mat of polymer fibers containing a dihydrazide and use thereof - Google Patents

Mat of polymer fibers containing a dihydrazide and use thereof Download PDF

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Publication number
US20130115447A1
US20130115447A1 US13/699,914 US201113699914A US2013115447A1 US 20130115447 A1 US20130115447 A1 US 20130115447A1 US 201113699914 A US201113699914 A US 201113699914A US 2013115447 A1 US2013115447 A1 US 2013115447A1
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US
United States
Prior art keywords
mat
dihydrazide
polymer
fibers
weight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/699,914
Other languages
English (en)
Inventor
Benjamin Blanchard
Boris Jaffrennou
Katarzyna Chuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Adfors SAS
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Saint Gobain Adfors SAS
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Filing date
Publication date
Application filed by Saint Gobain Adfors SAS filed Critical Saint Gobain Adfors SAS
Assigned to SAINT-GOBAIN ADFORS reassignment SAINT-GOBAIN ADFORS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUDA, KATARZYNA, BLANCHARD, BENJAMIN, JAFFRENNOU, BORIS
Publication of US20130115447A1 publication Critical patent/US20130115447A1/en
Abandoned legal-status Critical Current

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Classifications

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    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • B27N7/005—Coating boards, e.g. with a finishing or decorating layer
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Definitions

  • the invention relates to a mat of polymer fibers which contains a dihydrazide as an agent capable of trapping formaldehyde.
  • Highly varied composite materials are used in the field of the construction and fitting out of dwellings and offices, and also of transportation vehicles.
  • Some of these materials such as sound and/or thermal insulators, wooden panels, furniture parts and decorative parts, use adhesives, paints and varnishes comprising formaldehyde-based resins.
  • the proportion of free formaldehyde in these materials is kept at a very low level owing to the incorporation of a small amount of agents capable of trapping formaldehyde.
  • the proposal has been made to include particles of photocatalytic titanium oxide in a paint or material made of plaster (US-A-2005/0226761), a paper or a textile, plastic or wooden material (EP-A-1 437 397).
  • the aim of the present invention is to reduce the amount of formaldehyde present inside buildings, in particular dwellings, and transportation vehicles.
  • the present invention provides a mat of polymer fibers which contains at least one dihydrazide.
  • Another subject of the invention relates to the use of the aforementioned mat, in particular as a surface covering for thermal and/or sound insulation products based on mineral wool.
  • the dihydrazide in accordance with the present invention corresponds to the following formula:
  • the dihydrazide is chosen from the dihydrazides for which the radical R is a C 1 -C 12 , preferably C 1 -C 8 alkylene radical.
  • the preferred dihydrazide is adipic acid dihydrazide.
  • the amount of dihydrazide represents 0.1 to 50%, advantageously 0.2 to 20% and better still 0.3 to 10% of the weight of the mat of polymer fibers.
  • the dihydrazide is used together with a surfactant, the purpose of which is to increase the affinity of the fibers for the dihydrazide. This results in a more homogeneous distribution of the dihydrazide in the mat.
  • the surfactant in accordance with the invention may be an anionic, cationic or nonionic surfactant.
  • Anionic surfactants are preferred and among these alkyl diphenyl oxide disulfonate.
  • the amount of surfactant generally represents less than 90%, preferably from 20 to 80%, and advantageously from 55 to 65% of the weight of the dihydrazide.
  • the mat in accordance with the invention is based on fibers preferably constituted of an organic polymer.
  • fibers of polyolefin for example of polyethylene, of polypropylene, of polyisobutylene and of polymethylpentene, of polyvinyl acetate (homopolymer or copolymer), for example of ethylene/vinyl acetate (EVA), of polyvinyl alcohol (homopolymer or copolymer), for example of ethylene/vinyl alcohol, of polylactic acid, of acrylonitrile, for example modacrylic (containing 35 to 85% of acrylonitrile units), of polyoxyalkylene, for example of polyoxyethylene, of polyoxyphenylene, of polyacrylic or of polyacrylate, for example of polymethyl methacrylate (PMMA), of polyester, especially of polyalkylene terephthalate, for example of polyethylene terephthalate and polybutylene terephthalate, of polyamide, of polyimide, of chlorinated and/or fluorinated polymer, for example of polyvinyl chloride, of poly
  • the preferred fibers are fibers of a thermoplastic polymer since they can be obtained easily by conventional processes that take place by spinning or cospinning of molten plastic, in particular of polyester, advantageously of polyethylene terephthalate.
  • the mat may be constituted of fibers constituted of a single polymer or of a mixture of fibers of different polymers.
  • the mat of polymer fibers may be composed of continuous filaments, or of discontinuous filaments having a length which may reach 1000 mm, preferably that varies from 5 to 500 mm and advantageously from 50 to 100 mm.
  • the linear density of the fibers may vary to a large extent, for example up to 30 dtex, preferably is at least equal to 0.9 dtex, advantageously varies from 2 to 20 dtex and better still from 3 to 10 dtex.
  • the invention relates more particularly to a mat of fibers of synthetic polymer, it also applies to fibers of a polymer of natural origin containing, in particular, polysaccharides and/or proteins, such as animal fibers (wool or silk) and plant fibers (cotton, flax, hemp, sisal, coir, bamboo, etc.).
  • polysaccharides and/or proteins such as animal fibers (wool or silk) and plant fibers (cotton, flax, hemp, sisal, coir, bamboo, etc.).
  • the mat in accordance with the invention may be constituted of the aforementioned synthetic or natural fibers or of a mixture of these fibers.
  • the mat of polymer fibers may also comprise reinforcing elements in the form of fibers having a diameter greater than the diameter of the polymer fibers that constitute the mat, or of strands composed of a plurality of filaments, that have or have not undergone twisting.
  • the reinforcing elements may be constituted of a polymer material identical to or different from that of the fibers constituting the mat, or of another material, for example of glass.
  • the proportion of the reinforcing elements in the mat of polymer fibers remains low and generally represents at most 10% of the weight of the polymer fibers.
  • the mat of polymer fibers in accordance with the present invention has a surface density that varies from 5 to 1000 g/m 2 , preferably 10 to 800 g/m 2 , advantageously from 15 to 300 g/m 2 and better still is at most equal to 100 g/m 2 .
  • the mat that can be used within the context of the present invention may be manufactured according to known processes that make it possible to obtain polymer fibers, in particular by dry processes that take place by carding or by aerodynamic defibering (airlaid processes), by molten processes that take place by direct spinning (spunlaid processes) or by extrusion (spun bonding or melt blowing processes), by wet processes that take place starting from a suspension of fibers in water, similar to that used for obtaining paper or by specific techniques, for example electrospinning and flash spinning.
  • the mat of polymer fibers may also contain a binder which binds said fibers and confers thereon mechanical properties suitable for the desired use, especially a sufficient stiffness in order to be able to be handled easily.
  • the binder generally comprises at least one polymer capable of binding the fibers, said polymer possibly being of the same nature or of a different nature from that constituting the fibers.
  • This polymer may be a thermoplastic polymer, for example styrene/acrylonitrile, acrylonitrile/butadiene/styrene, cellulose (tri)acetate, expanded polystyrene, a polyolefin such as polyethylene and polypropylene, a poly(meth)acrylate, a polyvinyl acetate or a polyoxymethylene; a thermosetting polymer, for example an unsaturated polyester, an epoxide, a phenolic resin such as a novolac or a resol, in particular having a content of free aldehyde(s) of less than 0.05%, a polyimide, a polyurethane, a phenoplast or a biopolymer, for example a polysaccharide or a protein; an elastomeric polymer, for example a fluoropolymer, in particular based on vinylidene fluoride, neoprene, a polyacryl
  • the binder generally represents 5 to 300%, preferably less than 100%, by weight of the mat of polymer fibers.
  • the treatment temperature depends on the polymer constituting the fibers of the mat and on the polymer incorporated into the composition of the binder: it must remain well below the decomposition temperature of the polymer of the fibers in order to prevent the destruction of the mat.
  • the application of the dihydrazide to the mat of polymer fibers may be carried out by any known means, for example by impregnation, coating or spraying a solution, dispersion or an emulsion of said dihydrazide.
  • the liquid phase that can be used for dissolving, dispersing or emulsifying the dihydrazide is generally water.
  • the liquid phase may also comprise a small proportion of a water-miscible co-solvent that increases the wettability of the polymer fibers.
  • the co-solvent is chosen from polar organic solvents such as alcohols, in particular ethanol or propanol, and ketones, in particular acetone.
  • the amount of co-solvent does not exceed 30% of the total weight of water and co-solvent, and preferably remains less than 20%.
  • the mat of polymer fibers in accordance with the present invention may be used in many applications, for example:
  • a mat of polyethylene terephthalate fibers (18 g/m 2 ) is immersed in the solution obtained, then it is withdrawn and dried in an oven at 110° C. for 1 minute.
  • the amount of adipic acid dihydrazide deposited on the mat is equal to 4 g/m 2 .
  • the mat (25 cm ⁇ 5 cm) is placed in a container containing a 0.4 g/l aqueous solution of formol. The mat is placed above the solution so that it is not in contact with it. The container is hermetically sealed, then it is placed in an oven at 50° C. for 16 hours.
  • the mat is withdrawn and washed with water in order to remove the formaldehyde that has not reacted with the adipic acid dihydrazide.
  • the mat is then cut into several pieces which are placed in a container containing 100 ml of distilled water, under stirring.
  • the container is heated at 60° C. for 24 hours.
  • the aqueous phase is recovered, it is filtered and the amount of formaldehyde that it contains is measured by spectrocolorimetry.
  • the capacity of the mat from Example 1 to trap formaldehyde is equal to 930.44 mg/m 2 .
  • a sample of the mat obtained under a) is placed in a device in accordance with the ISO 16000-9 standard, modified in that the specific ventilation flow rate is equal to 0.5 m 3 /(m 2 .h) and the load factor is equal to 1 m 2 /m 3 .
  • test chamber of the device is fed with a continuous stream of air containing 95 ⁇ g/m 3 of formaldehyde over 8 days.
  • the amount of formaldehyde in the air entering and exiting is measured over a period of 8 days, and the reduction in the amount of formaldehyde per unit volume of air is calculated.
  • the formaldehyde is measured by liquid chromatography (HPLC) under the conditions of the ISO 16000-3 standard.
  • the chamber is supplied with air that contains no formaldehyde for 7 days and the amount of formaldehyde present in the air exiting the chamber is measured.
  • the formaldehyde is measured under the same conditions as in paragraph 1.
  • the amount of formaldehyde emitted by the mat according to the example in accordance with the invention is equivalent to that which is measured when the chamber does not contain any mat. It can be concluded therefrom that the formaldehyde is bonded to the adipic acid dihydrazide in a strong and lasting manner.
  • Example 2 The conditions from Example 1 were implemented, but modified in that the polyester mat is immersed in a solution obtained by mixing 121.9 g of water, 5.1 g of adipic acid dihydrazide, 20 g of a solution of binding containing a thermosetting polymer (Aquaset® TF 150 sold by Rohm & Haas; solids content: 54%) and 3 g of alkyl diphenyl oxide disulfonate (Dowfax® sold by Dow Chemical) and in that the drying is carried out at 210° C.
  • a thermosetting polymer Aquaset® TF 150 sold by Rohm & Haas; solids content: 546%
  • 3 g of alkyl diphenyl oxide disulfonate Dow Chemical
  • the amount of adipic acid dihydrazide deposited on the mat is equal to 3 g/m 2 .
  • the capacity of the mat from Example 2 to trap formaldehyde under static conditions of b), is equal to 694.44 mg/m 2 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Electromagnetism (AREA)
  • Wood Science & Technology (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
US13/699,914 2010-05-25 2011-05-13 Mat of polymer fibers containing a dihydrazide and use thereof Abandoned US20130115447A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1054021A FR2960565B1 (fr) 2010-05-25 2010-05-25 Mat de fibres de polymere contenant un dihydrazide et utilisation.
FR1054021 2010-05-25
PCT/FR2011/051074 WO2011148076A1 (fr) 2010-05-25 2011-05-13 Mat de fibres de polymere contenant un dihydrazide, et son utilisation

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CN (1) CN103167939B (ru)
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US20190030860A1 (en) * 2016-01-13 2019-01-31 Saint-Gobain Placo Acoustic plasterboard
US10450437B2 (en) * 2016-10-10 2019-10-22 Heedae Park Resin for thermoplastic polyurethane yarn using nanosilica and method for-manufacturing thermoplastic polyurethane yarn using the same
US11268213B2 (en) 2016-10-10 2022-03-08 Heedae Park Core-free thermoplastic polyurethane yarn with added nanosilica

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EP2657203A1 (en) 2012-04-27 2013-10-30 URSA Insulation, S.A. Process for the production of a phenol-formaldehyde resin having low free-formaldehyde content, the phenol-formaldehyde resin resulting from this process, and its use as a binder for mineral wool insulation products
EP2657266A1 (en) 2012-04-27 2013-10-30 URSA Insulation, S.A. Process for the preparation of a phenol-formaldehyde resin having a low amount of free formaldehyde, a phenol-formaldehyde resin resulting from this process, and the use of this resin as a binder for mineral wool insulation products
ES2687106T3 (es) 2013-10-25 2018-10-23 Ursa Insulation, S.A. Método para la fabricación de productos aislantes de lana mineral con emisiones bajas de formaldehído
US11433645B2 (en) 2013-12-30 2022-09-06 Saint-Gobain Placo Sas Building boards with increased surface strength
FR3089244B1 (fr) 2018-11-30 2021-04-30 Saint Gobain système pour la purification d’air
EP4004079A1 (de) * 2019-07-24 2022-06-01 Evonik Operations GmbH Herstellung von polyurethansystemen

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JPH1146965A (ja) * 1997-08-07 1999-02-23 Otsuka Chem Co Ltd カーペット
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Publication number Priority date Publication date Assignee Title
US20190030860A1 (en) * 2016-01-13 2019-01-31 Saint-Gobain Placo Acoustic plasterboard
US10450437B2 (en) * 2016-10-10 2019-10-22 Heedae Park Resin for thermoplastic polyurethane yarn using nanosilica and method for-manufacturing thermoplastic polyurethane yarn using the same
US11268213B2 (en) 2016-10-10 2022-03-08 Heedae Park Core-free thermoplastic polyurethane yarn with added nanosilica

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FR2960565B1 (fr) 2012-07-27
RU2570040C2 (ru) 2015-12-10
EP2576166B1 (fr) 2017-11-15
WO2011148076A1 (fr) 2011-12-01
FR2960565A1 (fr) 2011-12-02
CA2800505A1 (fr) 2011-12-01
EP2576166A1 (fr) 2013-04-10
RU2012156219A (ru) 2014-06-27
CN103167939A (zh) 2013-06-19

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