US20170298202A1 - Methods for surface modification of materials - Google Patents
Methods for surface modification of materials Download PDFInfo
- Publication number
- US20170298202A1 US20170298202A1 US15/516,934 US201515516934A US2017298202A1 US 20170298202 A1 US20170298202 A1 US 20170298202A1 US 201515516934 A US201515516934 A US 201515516934A US 2017298202 A1 US2017298202 A1 US 2017298202A1
- Authority
- US
- United States
- Prior art keywords
- surface modifying
- modifying additive
- hydrophilic
- polymer
- hydrophobic
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 title claims abstract description 27
- 230000004048 modification Effects 0.000 title description 8
- 238000012986 modification Methods 0.000 title description 8
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- 230000000996 additive effect Effects 0.000 claims abstract description 77
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- 239000000155 melt Substances 0.000 claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims abstract description 5
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- 150000008064 anhydrides Chemical class 0.000 claims description 13
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 229920000098 polyolefin Polymers 0.000 claims description 9
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 7
- 238000003887 surface segregation Methods 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
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- QAEDZJGFFMLHHQ-UHFFFAOYSA-N trifluoroacetic anhydride Chemical compound FC(F)(F)C(=O)OC(=O)C(F)(F)F QAEDZJGFFMLHHQ-UHFFFAOYSA-N 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 description 41
- 239000002202 Polyethylene glycol Substances 0.000 description 21
- 229920001223 polyethylene glycol Polymers 0.000 description 21
- 239000003063 flame retardant Substances 0.000 description 15
- 125000000524 functional group Chemical group 0.000 description 15
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 11
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- 150000001412 amines Chemical class 0.000 description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 8
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
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- 239000004626 polylactic acid Substances 0.000 description 4
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- 235000000346 sugar Nutrition 0.000 description 4
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- 239000000126 substance Substances 0.000 description 3
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- 229920002554 vinyl polymer Polymers 0.000 description 3
- BSYJHYLAMMJNRC-UHFFFAOYSA-N 2,4,4-trimethylpentan-2-ol Chemical compound CC(C)(C)CC(C)(C)O BSYJHYLAMMJNRC-UHFFFAOYSA-N 0.000 description 2
- PVVTWNMXEHROIA-UHFFFAOYSA-N 2-(3-hydroxypropyl)-1h-quinazolin-4-one Chemical compound C1=CC=C2NC(CCCO)=NC(=O)C2=C1 PVVTWNMXEHROIA-UHFFFAOYSA-N 0.000 description 2
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 2
- 229920001634 Copolyester Polymers 0.000 description 2
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- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
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- 239000003125 aqueous solvent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000014633 carbohydrates Nutrition 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
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- 239000003795 chemical substances by application Substances 0.000 description 2
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 2
- VVTXSHLLIKXMPY-UHFFFAOYSA-L disodium;2-sulfobenzene-1,3-dicarboxylate Chemical compound [Na+].[Na+].OS(=O)(=O)C1=C(C([O-])=O)C=CC=C1C([O-])=O VVTXSHLLIKXMPY-UHFFFAOYSA-L 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 229920001600 hydrophobic polymer Polymers 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
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- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
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- VPKQPPJQTZJZDB-UHFFFAOYSA-N 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl prop-2-enoate Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)CCOC(=O)C=C VPKQPPJQTZJZDB-UHFFFAOYSA-N 0.000 description 1
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 description 1
- IYMAXBFPHPZYIK-BQBZGAKWSA-N Arg-Gly-Asp Chemical class NC(N)=NCCC[C@H](N)C(=O)NCC(=O)N[C@@H](CC(O)=O)C(O)=O IYMAXBFPHPZYIK-BQBZGAKWSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920003317 Fusabond® Polymers 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
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- 150000001336 alkenes Chemical class 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 108010072041 arginyl-glycyl-aspartic acid Proteins 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000001588 bifunctional effect Effects 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000007380 fibre production Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000010406 interfacial reaction Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
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- 239000002923 metal particle Substances 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- VGPBPWRBXBKGRE-UHFFFAOYSA-N n-(oxomethylidene)hydroxylamine Chemical compound ON=C=O VGPBPWRBXBKGRE-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000019612 pigmentation Effects 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 238000000710 polymer precipitation Methods 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
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- 238000011105 stabilization Methods 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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- 229910052718 tin Inorganic materials 0.000 description 1
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- 229910052721 tungsten Inorganic materials 0.000 description 1
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- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920003176 water-insoluble polymer Polymers 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
- C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C08G81/024—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G
- C08G81/025—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G containing polyether sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D153/00—Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D153/005—Modified block copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/06—Polyamides derived from polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
Definitions
- the present disclosure relates to methods providing surface modification of polymeric materials as well as compositions and articles having such modifications.
- polymeric substrates are hydrophobic and inert owing to their non-polar nature.
- polymers that are olefinic can show high hydrophobicity.
- Some applications may require that the surfaces of polymeric substrates instead be hydrophilic.
- surfaces used in microfluidics, surfaces of biological and medical devices, sensors, or other devices may need to be hydrophilic.
- tissue growth is encouraged on hydrophilic surfaces, which may or may not show biorecognizable moieties (such as RGD peptides, proteins, or other molecules or cells).
- battery separators made of olefins need to be wettable to efficiently fill the battery space with electrolyte.
- inert fibers may be desirable to modify the surfaces of inert fibers with functional chemistry.
- the surface of a polyolefin or other inert fibers may be treated with a flame retardant sheath that enables production of high mechanical strength fibers (i.e., no flame retardants in the core of the fiber) while the surface offers inhibitory action towards propagating flame.
- a flame retardant sheath that enables production of high mechanical strength fibers (i.e., no flame retardants in the core of the fiber) while the surface offers inhibitory action towards propagating flame.
- This could be desirable in cheap fabrics made of inexpensive polyolefins.
- this may render the fiber hydrophilic or hydrophobic.
- synthetic low cost fibers be surface modified to provide a better hand (“feel”), or the appearance of a natural fiber surface while the core is of a synthetic fiber.
- Hand is the quality of a fabric assessed by the reaction obtained from the sense of touch.
- Surface modification may be necessary to impart, for example, a certain hand of cotton to synthetic fibers. This could be accomplished by modifying the surfaces of synthetic fiber surfaces using a cellulosic derivative, which may render the fiber surfaces hydrophilic.
- melt additives that segregate to surfaces and surface coatings that bind to melt additives at interfaces may be desired.
- a surface polymer or material of another type be hydrophilic, such as rendering a surface to be able to attract and attach itself to protein
- the surface can be modified to exhibit such properties.
- Rendering surfaces hydrophilic or hydrophobic or otherwise modifying the surface of a material can present challenges during manufacturing. Previous methods have applied a topical coating or some other material after the article is made, but this may be removed during, for example, use, wearing, or washing. New durable methods to modify the surface of a material are needed in the art.
- the invention concerns, inter alia, anchor molecules that have chemically similar characteristics to a polymer matrix and a surface modifying additive are combined to change surface chemistry of a polymer. This may, for example, render an article, such as a fabric, hydrophilic or hydrophobic.
- the invention concerns methods for modifying a surface of a material comprising anchoring a surface modifying additive to a polymer matrix using an anchor molecule, wherein the surface modifying additive and the anchor molecule are both added to a melt phase of the polymer matrix.
- the surface modifying additive has both hydrophobic blocks and hydrophilic blocks. One can modify or adjust the ratio of the hydrophobic blocks and the hydrophilic blocks to enable surface segregation of the surface modifying additive.
- a surface modifying additive comprises polytetrafluoroethylene and ethylene oxide blocks.
- the ethylene oxide blocks can comprise, for example, polyethyelene glycol or polyethylene oxide.
- Some surface modifying additives comprise a fluorinated molecule, such as fluorinated polyetherdiol. In some embodiments this florinated polyetherdiol has ethylene oxide segments in a backbone and hydrophobic sidechains.
- the anchor molecule comprises maleated polypropylene.
- the invention is useful in a variety of polymer matrices.
- the polymer matrix comprises polyolefins.
- the surface of a surface of the material is rendered hydrophilic or hydrophobic depending on the composition of the surface modifying additive. Properties other than the hydrophilic or hydrophobic nature of a surface can be modified by the instant technology. For example, the lubricity of the surface of the material may be modified.
- the surface modifying additive is uniformly distributed over a surface of the material.
- Some aspects of the invention further concern (a) modifying metallic nanoparticles with the surface modifying additive; and (b) segregating the metallic nanoparticles to a surface of the material.
- the invention further concerns (a) modifying metallic nanoparticles with the surface modifying additive; (b) reacting the metallic nanoparticles with the anchor molecule; and (c) binding the metallic nanoparticles to the polymer matrix.
- the surface modifying additive and the anchor molecule are added separately to the polymer matrix.
- the invention concerns articles formed using a method which comprises at least one method described herein.
- the invention concerns surface modifying additives comprising (a) a polymer; (b) at least one hydrophilic block on the polymer; and (c) at least one hydrophobic block on the polymer; wherein the polymer is configured to render an article hydrophilic.
- the ratio of the at least one hydrophilic block to the at least one hydrophobic block is configured to enable surface segregation of the at least one hydrophilic block.
- the surface modifying additive has a ratio of the at least one hydrophilic block to the at least one hydrophobic block is configured to render the article hydrophilic.
- the at least one hydrophobic block is fluorinated.
- the at least one hydrophobic block is selected from the group consisting of polytetrafluoroethylene, a carboxy functionalized fluorinated compound, and an anhydride functionalized fluorinated compound.
- the at least one hydrophobic block comprises trifluoroacetic anhydride or dodecafluoroheptanoyl chloride.
- the at least one hydrophilic block comprises ethylene oxide.
- the surface modifying additive may have a fluorine content in a range of 15% to 46%. In certain embodiments, the surface modifying additive has a fluorine content in a range of 5% to 75%.
- the invention also concerns methods and articles where the polymer matrix is an island in sea composite fiber and the surface modifying additive is anchored to the island.
- the island in sea composite fiber comprises polypropylene and polyethylene glycol.
- the island in sea composite fiber further comprises a cellulosic molecule.
- One suitable cellulosic molecule is carboxymethylcellulose.
- the surface modifying additive and the anchor molecule may each comprise one of a maleated polypropylene molecule and a maleic anhydride reactive molecule.
- the maleic anhydride reactive molecule comprises one of an amine modified polyethylene glycol and a hydroxyl modified polyethylene glycol.
- the surface modifying additive and said anchor molecule each comprise one of an anhydride modified polypropylene molecule and a species selected from the group consisting of an aminated protein, a peptide, and a sugar.
- Some methods form articles by a process further comprising reacting the polymer matrix with a flame retardant molecule such as 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.
- a flame retardant molecule such as 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.
- the flame retardant molecule is the surface modifying additive in some compositions.
- the anchor molecule is chemically compatible with said polymer matrix and may have chemically similar characteristics to the polymer matrix.
- Methods, articles and compositions of the invention may optionally utilize one or more materials selected from flame retardants, dye, UV absorbent agents, heat stabilizers, and sheath forming agents. These materials, may in some embodiments, be the surface modifying material.
- Some surface modifying additives comprise a fluorinated molecule. Some surface modifying additives further comprise a hydroxyl group.
- the surface modifying additive and the anchor molecule are part of a single molecule.
- the surface modifying additive and the anchor molecule are attached in the single molecule using at least one of covalent, electrostatic, or van der Waals interactions.
- the anchor molecule comprises an oligomeric chain or a polymeric chain and the anchor molecule has a reactive functional group. Reactive functional groups include amine, epoxy, anhydride, isocyanate, hydroxyl, carboxyl, and acid chloride.
- Some anchor molecules comprise one or more of polyolefin, polyester, a polyamide, styrenic polymer, vinyl polymer, or a combination or copolymers thereof.
- Certain surface modifying additives are a derivative of polyethyleneoxide with a functional group that is also present on the anchor molecule.
- the polymer matrix is an island in sea composite fiber and said surface modifying additive is anchored to said island.
- the island in sea composite fiber may comprise polypropylene and polyethylene glycol.
- the island in sea composite fiber further comprises a cellulosic molecule.
- One preferred cellulosic molecule comprises carboxymethyl cellulose.
- the surface modifying additive and said anchor molecule each comprise one of a maleated polypropylene molecule and a maleic anhydride reactive molecule.
- the maleic anhydride reactive molecule may comprise an amine modified polyethylene glycol or a hydroxyl modified polyethylene glycol.
- the surface modifying additive and said anchor molecule each comprise one of an anhydride modified polypropylene molecule and a species selected from the group consisting of an aminated protein, a peptide, and a sugar.
- the present disclosure describes use of in-situ surface chemistry involving surface segregating or interfacially segregated reactive molecules that are capable of anchoring desired molecules at the interface or surface and, in turn, are anchored to a polymer matrix of an article or finished product, and may be stably and uniformly distributed at the surface/interface, though other distributions are possible.
- This interlocking or anchoring of the surface modification entity only at the surface can help offset the loss in mechanical properties of the finished polymer product wherein the core of the product is unadulterated by any incompatible surface segregating additive.
- Anchored surface modifying molecules can be added to the melt during manufacturing to yield a surface-modified article.
- This surface-modified article may be fabricated using injection molding, extrusion, casting, fiber spinning, or other methods known to those skilled in the art.
- a polymeric articles can be surface modified via melt phase addition of a surface-modifying entity and stabilization of the surface-modifying entity at the interface. This may prevent wash-off (in the case of fabrics), evaporation, sloughing off, or other removal.
- the surface segregating or interfacially segregated reactive molecules could be one single molecule that contains two components attached to each other via either covalent, electrostatic or van der Waals interactions prior to addition into the polymer matrix.
- One part of the additive is an anchor molecule (or anchor) that has chemically similar characteristic as the polymer matrix while the other part is the surface modifying additive, such as a fluorinated molecule.
- the anchor and surface modifying additive can also be separate molecules.
- the surface modifying additive may be reacted or bound to an anchor during the process of adding the surface modifying additive to the polymer article. In these embodiments, both the anchor and the surface modifying additive may be separately added during processing of the polymer into a final article.
- the anchors may be tuned to the chemical environment of the polymer article.
- the anchors may have a substantially similar chemical structure as that of the polymer matrix and/or be compatible with the polymer.
- the anchor and the surface modifying additive combination conjugate may be a separate entity from the polymer allowing the final product to be easily recycled. This also allows a new product produced from the recycled product to maintain the surface modifying additive and possess the surface modifying additive properties of the original article.
- the anchor molecules may be polymeric or oligomeric molecules which have reactive functional groups. These may be water insoluble polymers such as polyethylene with functional groups such as, for example, amines, epoxy, anhydride, isocyanate, hydroxyl, carboxyl, or acid chloride.
- the anchor molecule also could be polyolefins, polyesters, polyamides, styrenics, vinyl polymers, or copolymers of these entities functionalized with any of the above functional groups or other functional groups.
- the surface modifying additives may be derivatives of water soluble polymers such as polyethyleneoxide which contain functional groups that are reactive groups present on the anchor group.
- Such pairings include but are not limited to epoxy-amine, epoxy-anhydride, anhydride-hydroxyl, anhydride-amine, amine-isocyanate, hydroxyl-isocyanate, or acid chloride-amine.
- the anchor may be made of the same chemical structure as the matrix while the surface modifying entity may be chemically different from the matrix.
- the surface modified fabrics may be used for clothing, protective gear, biological devices, medical devices, or other applications.
- the “Islands in Sea” type composite fibers comprise a sea part containing an easily-soluble polymer and multitudes of island parts containing an insoluble or sparingly soluble polymer (i.e., the island parts are less soluble than the sea part).
- the island fibers are separated from the sea by dissolving away the sea. These fibers are made, for example, using a melt spinning technique such as with a spinneret. Polypropylene and polyethylene glycol (PEG) form one suitable pair to produce island in sea fibers, though other pairs are possible.
- the sea parts may be a polymer that is easily soluble in aqueous alkali solutions such as polylactic acid, polyalkyleneoxide-based polymers and co-polymers (which may have high molecular weights), copolymerized polyesters, and copolymerized polyesters of polyethylene glycol compounds with 5-sodium sulfoisophthalic acid.
- the island parts may be, for example, a water dissolvable polymer or aqueous solution dissolvable polymer such as polyolefins, polyesters, polyamides, acrylics, styrenics, their copolymers, acetals, or other hydrophobic polymers.
- the surface of the island fibers can be modified by the interfacial reaction of an additive system.
- a reactive anchor molecule may be added to the island polymer and a corresponding molecule (i.e., the surface modifying additive) capable of reacting with the anchor is added to the sea polymer such that the two meet at the interface between the island and the sea polymers and initiate reaction.
- the anchor locks the surface modifying additive to the surface of the fiber and upon washing the sea away, the additive system is locked to the surface of the fiber.
- polypropylene and PEG are used to produce island in sea fibers.
- Polypropylene forms the island or insoluble phase while the PEG forms the soluble phase.
- a maleated (maleic anhydride modified) polypropylene molecule can be added in small proportion to the polypropylene polymer matrix while a maleic anhydride reactive molecule such as amine modified or hydroxyl modified PEG can be added to the PEG sea matrix.
- the maleated molecule is the anchor and the PEG-amine molecule is the surface modifying additive.
- the maleated polypropylene owing to the polar maleic anhydride group, orients itself to face the PEG sea during fiber formation.
- the maleic anhydride has a high chance of encountering an aminated or hydroxylated.
- PEG molecule The anhydrous melt conditions provide a suitable environment for the reaction between maleated polypropylene and aminated (or hydroxylated) PEG molecule thus locking the PEG molecule to the interface of the fiber and the surrounding polymer.
- the resulting polypropylene fibers are modified with a bound layer of PEG which is more difficult to wash off.
- anchor and surface modifying additives could include a reaction of an anhydride modified polypropylene molecule with aminated proteins, peptides, sugars, or other molecules or compounds to provide a hydrophilic surface with a biorecognizable interface.
- Other surface modifying additives could be hydrophobic molecules such as fluorinated molecules with functional groups that can react with anchor functional group.
- the surface modifying additives also may be flame retardants, dyes, UV absorbent agents, heat stabilizers, or sheath forming agents that impart properties such as lubricity (increasing or reducing friction) or stain resistance.
- Reactive anhydride or epoxy modified polypropylene surfaces can be reacted with cellulose to provide a cellulose-like or cotton-like surface for synthetic fibers.
- a maleated polypropylene molecule such as Fusabond® series from DuPont
- CMC carboxymethylcellulose
- Cellulosic molecules may be, for example, carbohydrates or sugar molecules.
- the carbohydrate may be insoluble in water, such as cellulose or hemicellulose.
- the interfacially segregated anhydride group of the maleated-polypropylene reacts with the hydroxyl groups on the cellulosic molecule thus locking it to the fiber surface and providing a cotton-like natural surface to a synthetic fiber.
- the anchor may be, for example, polyester, polylactic acid, polyamides, polystyrene, polyethylene, polyvinyl alcohol, or another species that is readily soluble.
- copolyester is readily soluble in hot water or aqueous solvents, polylactic acid and polyvinyl alcohol. Copolyester was co-polymerized with polyethylene glycol and sodium sulfoisophthalate. From the viewpoint of spinning, polylactic acid and polyester dissolve easily in an aqueous solvent of low concentration. Further, from the viewpoint of the open superfine fiber removal properties and sea occurs, polyesters sodium sulfoisophthalate copolymerized alone may be beneficial.
- the anchor/surface modifying additive reactive system could be used to surface modify synthetic polymer surfaces with a hydrophobic group. This would be an advantageous system for producing stain and water repellant fabrics.
- the additive could be made by pre-reacting an anchor and a surface modifying additive in an extruder and then adding the conjugate at a small proportion to the matrix of the polymer to be surface modified.
- a fluorinated molecule containing hydroxyls was pre-reacted with a maleated polypropylene molecule resulting in an ester linkage between the two. This additive was then melt compounded with the polypropylene matrix. The fluorinated molecule tends to surface segregate due to its low surface energy while being bound by the polypropylene anchor which is entangled in the polypropylene matrix.
- a reactive anhydride modified polypropylene surface can also be reacted with flame retardant (FR) molecules, such as, for example, an epoxy-modified molecule such as 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) or other molecules, to provide a covalently immobilized FR sheathing around the fibers.
- FR flame retardant
- DOPO 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide
- compositions may include one or more surface modifying molecules reacted with one or more anchors, such as, oligomeric or polymeric chains having a reactive functional group, such as an epoxy functional group, a hydroxyl functional group, or anhydride.
- a reactive functional group such as an epoxy functional group, a hydroxyl functional group, or anhydride.
- the surface modifying additive may be incorporated into a polymer matrix and used to impart hydrophilic, hydrophobic, biocompatible or biorecognizable properties to a final products, such as paints, textiles, coatings, and other articles.
- the anchors allow for increased dispersion of the surface modifying molecule within the polymer matrix of the article, and also enable high loadings while minimizing adverse impacts to the mechanical properties of the article due to entanglement of the anchor or tail with the polymer matrix of the article.
- Hydrophilic surfaces also can be created on an article using surface modifying additives that have both hydrophilic and hydrophobic blocks.
- the hydrophobic blocks have affinity to the air-polymer interface (i.e., tend to surface segregate).
- hydrophilic blocks owing to their high surface energy, tend to be buried below the air-polymer interface and are typically unavailable to surface modify the polymeric substrate, article, or polymer matrix to which they are added to.
- Hydrophobic blocks tend to surface segregate and hydrophilic blocks tend to remain buried due to surface energy differences. Thermodynamically, any surface wants to minimize surface energy. So when two dissimilar materials (in terms of surface energy or surface tension) are mixed together, the material with the least surface tension (or surface energy), such as the hydrophobic blocks, tends to populate the interface with air. This results in the higher energy component, such as the hydrophilic blocks, being pushed into the interior of the article.
- hydrophobic blocks and hydrophilic blocks By combining hydrophobic blocks and hydrophilic blocks into a surface modifying additive, enough driving force can be generated by the hydrophobic blocks to cause surface segregation of the surface modifying additive such that the attached hydrophilic blocks are brought to the interface as well.
- hydrophobic fluorinated groups such as those present in polytetrafluoroethylene (PTFE)
- PTFE polytetrafluoroethylene
- hydrophilic ethylene oxide blocks such as the blocks present in polyethyelene glycol or highly water soluble polyethylene oxide.
- This process works with molecules that have fluorine content in the range of approximately 15% to 46%. This process also may work with molecules containing fluorinated species with % F in a range of approximately 5% to 75%. The higher % F containing molecules would be less hydrophilic than the molecules containing lower % F.
- the fluorine content or % F is measured in weight/weight (w/w).
- fluorinated polyetherdiols such as PolyFox® from Omnova
- These polymers are made of hydrophilic backbones consisting of ethylene oxide segments and hydrophobic sidechains.
- the polymer intermediates have end hydroxyl groups which can be reacted with suitable anchors.
- a maleated polypropylene molecule such as GR204 Amplify from Dow
- the polypropylene anchor is chemically compatible with the polyolefin backbone while the PolyFox additive is capable of surface segregation.
- reactive polyethers such as Jeffamine® molecules (Huntsman) can be reacted with carboxy or anhydride functionalized fluorinated compounds such as trifluoroacetic anhydride or dodecafluoroheptanoyl chloride to yield fluorinated polyether molecules.
- Such molecules have the ability to surface segregate in a polymeric matrix due to the presence of fluorinated species while providing hydrophilic character due to the polyether blocks.
- hydrophilic monomers such as hydroxypropylmethacrylate are copolymerized with vinyl monomers containing fluorinated groups such as 2-(perfluorohexyl)ethyl acrylate to result in polymers with both hydrophobic and hydrophilic domains.
- the anchor/surface modifying additive reactive system could be used to surface modify synthetic polymer surfaces with a metallic nanoparticles.
- Synthetic fibers may need to be plated in a secondary operation to obtain metallic surfaces for synthetic polymer articles.
- a melt additive that can prepare such metallic layers on synthetic polymer surfaces. This can be accomplished by modifying metallic nanoparticles with a surface modifying additive.
- metallic nanoparticles can be reacted with a fluorinated polymer or oligomer and be added to the melt of a polyester. When fibers are spun, the metallic particle is dragged to the surface due to the fluorinated molecule surface segregating due to its lower surface energy.
- the metallic nanoparticle could be modified with functional groups that are reactive with anchor molecules.
- the metallic nanoparticles could be added to the sea phase such that it reacts with the functional groups of the anchor molecule at the interface.
- the metal particles are found bound to the polymer surface anchored to the matrix.
- metallic nanoparticles with additional functionality include: Fe-based and/or Co-based and/or Ni-based nanoparticles (which may be used for magnetic applications), copper-based nanoparticles (which may be used for conductivity-based applications), silver-based nanoparticles (which may be used for antimicrobial, conductivity, or heat transfer applications), titanium-based nanoparticles (which may be used for pigmentation or UV protection), or ZnO-based nanoparticles (which may be used for UV protection).
- the metallic nanoparticles also may be Sn, Pb, W, or Ta based, which may be used as a lithium binding site for electrode applications.
- the metallic nanoparticles also may be Si, Ge, or GaAs based, which may be used in semiconductor, light-emitting diodes, or solar applications.
- the metallic nanoparticles also may be InGaAs, InP, GaP, GaN, ZnS, CdSe, FeS based, which may be used for quantum dots and flourescene based applications.
- the metallic nanoparticles also may be other materials known to those skilled in the art.
- the metallic nanoparticles may have dimensions from a few nanometers to a few hundred microns. In one example, the metallic nanoparticles range in dimension from approximately 10 nm to approximately 10 microns.
- crosslinking of a reactive component added to the fiber spinning melt is encouraged to form an interpenetrating network with the nylon matrix.
- the cross-linking enhances the viscosity of the material when aflame, potentially reducing the melt drips.
- Elvamide® nylon multipolymers from DuPont are added as an additive to the nylon melt during fiber spinning
- An epoxy crosslinker such as diglycidyl ether of polyethyleneoxide is used to crosslink the Elvamide® molecules.
- epoxy modified DOPO flame retardant molecules from Struktol can be used to modify some of the amines thereby imparting further flame retardancy and an ability for char formation.
- the DOPO may be a surface modifying additive used with an anchor. This embodiment is not limited to nylons but can also be applied to other thermoplastic fibers such as PET by selecting appropriate reactive molecules.
- multifunctional crosslinkers that may contain at least two functional groups
- epoxy, anhydride, amine, isocyanate, or hydroxyl can be used to create crosslinked networks.
- Other groups or species also may be contained in the crosslinker and the crosslinkers are not limited merely to those examples herein.
- crosslinking can be brought about between merging melt fronts such as those encountered in bicomponent fibers. These fibers are made by mixing two dissimilar materials in the spinneret head to create fibers with two different materials joined together in many different shapes. This technique can be exploited to create cross-linked fibers.
- two streams of Nylon polymer melts, one containing an Elvamide® nylon resin and the other containing a bifunctional crosslinker such as diglycidyl ether of PEG are brought together a bicomponent fiber, both made of PET.
- the reactive molecules react with one another forming crosslinks where the melt fronts meet resulting in enhanced resistance to melt dripping in the case of a fire.
- the anchor molecules may be chemically similar to the polymer matrix.
- the Elvamide molecules are chemically similar to polyamide matrix molecules (such as nylon) but they possess functionality that defines them as anchor molecules.
- the Elvamide molecules are crosslinked with a simple crosslinker or a more importantly a flame retardant crosslinker (such as epoxy modified DOPO) that provides an anti-drip functionality to the polyamide matrix material.
- Any flame retardant that can be functionalized with groups capable of crosslinking anchor molecules would be suitable in the examples disclosed herein.
- DOPO is merely an example.
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US15/516,934 US20170298202A1 (en) | 2014-10-07 | 2015-03-23 | Methods for surface modification of materials |
PCT/US2015/021980 WO2016057072A1 (fr) | 2014-10-07 | 2015-03-23 | Procédés de modification de la surface de matériaux |
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US10125218B2 (en) * | 2016-07-26 | 2018-11-13 | Xerox Corporation | Intermediate transfer members |
US11008458B2 (en) | 2016-03-17 | 2021-05-18 | Qed Labs Inc. | Articles with improved flame retardancy and/or melt dripping properties |
US11104799B2 (en) | 2016-11-28 | 2021-08-31 | Qed Labs, Inc. | Meltable intumescent flame retardant compositions |
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US10385479B2 (en) | 2015-02-09 | 2019-08-20 | Brookwood Companies Incorporated | Fire retardant nylon fibers and methods for making them |
MX2018013023A (es) | 2016-04-24 | 2019-01-31 | Qed Labs Inc | Composiciones de polimeros con propiedades pirorresistentes y/o goteo fundido mejoradas. |
US20230142258A1 (en) * | 2016-11-21 | 2023-05-11 | Qed Labs, Inc. | Staple fibers containing releasable surface modifying molecules |
BR112019010263A2 (pt) * | 2016-11-21 | 2019-09-10 | Qed Labs Inc | fibras de grampo, tecido e método |
WO2024186866A1 (fr) | 2023-03-07 | 2024-09-12 | Ascend Performance Materials Operations Llc | Fibres et tissus contenant des additifs azotés |
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US4079084A (en) * | 1972-03-15 | 1978-03-14 | Imperial Chemical Industries Limited | Fluorocarbon surfactants |
CA1323378C (fr) * | 1987-06-29 | 1993-10-19 | Masahide Tanaka | Mono-ou polyalkyleneglycol fluore, et methode pour sa production |
US6855775B2 (en) * | 2001-12-13 | 2005-02-15 | Omnova Solutions Inc. | Polymeric blocks of an oxetane oligomer, polymer or copolymer, containing ether side chains terminated by fluorinated aliphatic groups, and hydrocarbon polymers or copolymers |
US7026014B2 (en) * | 2003-02-07 | 2006-04-11 | Clemson University | Surface modification of substrates |
WO2005047358A1 (fr) * | 2003-11-11 | 2005-05-26 | Omnova Solutions Inc. | Compositions aqueuses de revetement hydrophobe et oleophobe, procedes et utilisations |
CN102304204B (zh) * | 2011-05-20 | 2014-09-10 | 中科院广州化学有限公司 | 一种含氟双功能性微球及其应用 |
US9346961B2 (en) * | 2012-03-30 | 2016-05-24 | Fujifilm Corporation | Polymerizable composition and antireflective film, polarizing plate and image display device using the same |
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Cited By (4)
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US11008458B2 (en) | 2016-03-17 | 2021-05-18 | Qed Labs Inc. | Articles with improved flame retardancy and/or melt dripping properties |
US10125218B2 (en) * | 2016-07-26 | 2018-11-13 | Xerox Corporation | Intermediate transfer members |
US11104799B2 (en) | 2016-11-28 | 2021-08-31 | Qed Labs, Inc. | Meltable intumescent flame retardant compositions |
US11932765B2 (en) | 2016-11-28 | 2024-03-19 | Qed Labs, Inc. | Meltable intumescent flame retardant compositions |
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US20170267815A1 (en) | 2017-09-21 |
US10131757B2 (en) | 2018-11-20 |
WO2016057072A1 (fr) | 2016-04-14 |
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