EP3390600B1 - Gewebepflegezusammensetzung - Google Patents

Gewebepflegezusammensetzung Download PDF

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Publication number
EP3390600B1
EP3390600B1 EP16801811.7A EP16801811A EP3390600B1 EP 3390600 B1 EP3390600 B1 EP 3390600B1 EP 16801811 A EP16801811 A EP 16801811A EP 3390600 B1 EP3390600 B1 EP 3390600B1
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Prior art keywords
polysaccharide
cationic
composition
fabric conditioning
fabric
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EP16801811.7A
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English (en)
French (fr)
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EP3390600A1 (de
Inventor
Elizabeth Ann Clowes
Robert Allan Hunter
Karl Gareth Kean Jones
Sebastian Emanuel Aputsiaq MJORNSTEDT
Janette Perry
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Unilever Global IP Ltd
Unilever IP Holdings BV
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Unilever PLC
Unilever NV
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/62—Quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/001—Softening compositions
    • C11D3/0015—Softening compositions liquid
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • C11D3/227—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin with nitrogen-containing groups
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3707—Polyethers, e.g. polyalkyleneoxides

Definitions

  • the present invention relates to fabric conditioner compositions having superior stability, comprising a fabric softening active, cationic polysaccharide, non-ionic polysaccharide and a block copolymer of polypropylene glycol and polyethylene glycol.
  • Fabric conditioners as a commercial product require a long 'shelf life'. There may be a significant period of time between the production of the product and the use of the product by the consumer. Over a period of time a fabric conditioner will become unstable and render the product unusable. Various attempts have been made to improve stability of fabric conditioner products.
  • WO 2015 107155 discloses a fabric conditioning composition, comprising at least a fabric conditioning compound, preferably, a biodegradable and cationic fabric conditioning compound, and a cationic polysaccharide.
  • the composition has excellent stability and long storage life, as well as, superior softening performance.
  • a fabric conditioning composition comprising:
  • a method for improving stability of a fabric conditioning composition by adding to the composition; 0.5 to 20 wt.% of a fabric softening active, which is a quaternary ammonium compound, 0.01 to 2 wt.% cationic polysaccharide, 0.01 to 2 wt.% non-ionic polysaccharide, 0.01 to 5 wt.% block copolymer of polypropylene glycol and polyethylene glycol and water.
  • a fabric softening active which is a quaternary ammonium compound
  • 0.01 to 2 wt.% cationic polysaccharide 0.01 to 2 wt.% non-ionic polysaccharide
  • 0.01 to 5 wt.% block copolymer of polypropylene glycol and polyethylene glycol and water 0.01 to 5 wt.% block copolymer of polypropylene glycol and polyethylene glycol and water.
  • cationic polysaccharide means a polysaccharide or a derivative thereof that has been chemically modified to provide the polysaccharide or the derivative thereof with a net positive charge in a pH neutral aqueous medium.
  • the cationic polysaccharide may also include those that are non-permanently charged, e.g. a derivative that can be cationic below a given pH and neutral above that pH.
  • Non-modified polysaccharides such as starch, cellulose, pectin, carageenan, guars, xanthans, dextrans, curdlans, chitosan, chitin, and the like, can be chemically modified to impart cationic charges thereon.
  • a common chemical modification incorporates quaternary ammonium substituents to the polysaccharide backbones.
  • suitable cationic substituents include primary, secondary or tertiary amino groups or quaternary sulfonium or phosphinium groups. Additional chemical modifications may include cross-linking, stabilization reactions (such as alkylation and esterification), phophorylations, hydrolyzations.
  • nonionic polysaccharide refers to a polysaccharide or a derivative thereof that has been chemically modified to provide the polysaccharide or the derivative thereof with a net neutral charge in a pH neutral aqueous medium; or a non-modified polysaccharide.
  • compositions of the present invention contain a fabric softening active.
  • the fabric conditioning compositions of the invention contain 0.5 to 20 wt%, preferably from 1 to 11 wt%, more preferably 2 to 8 wt% softening active.
  • the softening active for use in rinse conditioner compositions of the invention is a quaternary ammonium compound (QAC).
  • the preferred quaternary ammonium compounds for use in compositions of the present invention are the so called "ester quats" comprising an ester link.
  • Particularly preferred materials are the ester-linked triethanolamine (TEA) quaternary ammonium compounds comprising a mixture of mono-, di- and tri-ester linked components.
  • TAA triethanolamine
  • Most preferably the ester-linked quaternary ammonium compound is an ester-linked triethanolamine quaternary ammonium compound comprising unsaturated fatty chains.
  • TEA-based fabric softening actives comprise a mixture of mono, di- and tri-ester forms of the compound where the di-ester linked component comprises no more than 70 % by weight of the fabric softening compound, preferably no more than 60 %, e.g. 55 %, or 45 % of the fabric softening compound and at least 10 % of the monoester linked component, for example 11 % monoester.
  • a preferred hardened type of active has a typical mono:di:tri ester distribution of from 18 to 22 monoester: from 58 to 62 diester: from 18 to 22 triester; for example 20:60:20.
  • a soft TEA quat may have a typical mono:di:tri ester distribution of from 25 to 45 %, preferably from 30 to 40 % monoester: from 45 to 60 %, preferably from 50 to 55 % diester: and from 5 to 25 %, preferably from 10 to 15 % triester; for example 40:50:10.
  • a first group of quaternary ammonium compounds (QACs) suitable for use in the present invention is represented by formula (I): wherein each R is independently selected from a C 5-35 alkyl or alkenyl group; R 1 represents a C 1-4 alkyl, C 2-4 alkenyl or a C 1-4 hydroxyalkyl group; T is generally O-CO. (i.e. an ester group bound to R via its carbon atom), but may alternatively be CO-O (i.e.
  • TEA ester quats preparations which are rich in the di-esters of triethanolammonium methylsulfate, otherwise referred to as "TEA ester quats".
  • StepantexTM UL85 Ex Stepan, PrapagenTM TQL, ex Clariant, and TetranylTM AHT-1
  • Ex Kao both di-[hardened tallow ester] of triethanolammonium methylsulphate
  • AT-1 di-[tallow ester] of triethanolammonium methylsulphate
  • L5/90 di-[palm ester] of triethanolammonium methylsulphate
  • Ex Kao and RewoquatTM WE15 (a di-ester of triethanolammonium methylsulphate having fatty acyl residues deriving from C 10 -C 20 and C 16 -C 18 unsaturated fatty acids), ex Evonik.
  • soft quaternary ammonium actives such as Stepantex VK90, Stepantex VT90, SP88 (ex-Stepan), Ceca Noramine, Prapagen TQ (ex-Clariant), Dehyquart AU-57 (ex-Cognis), Rewoquat WE18 (ex-Degussa) and Tetranyl L190 P, Tetranyl L190 SP and Tetranyl L190 S (all ex-Kao).
  • a second group of QACs suitable for use in the invention is represented by formula (II): wherein each R 1 group is independently selected from C 1-4 alkyl, hydroxyalkyl or C 2-4 alkenyl groups; and wherein each R 2 group is independently selected from C 8-28 alkyl or alkenyl groups; and wherein n, T, and X - are as defined above.
  • Preferred materials of this second group include 1,2 bis [tallowoyloxy]-3-trimethylammonium propane chloride, 1,2 bis [hardened tallowoyloxy]-3-trimethylammonium propane chloride, 1,2- bis [oleoyloxy]-3-trimethylammonium propane chloride, and 1,2 bis [stearoyloxy]-3-trimethylammonium propane chloride.
  • Such materials are described in US 4,137,180 (Lever Brothers ).
  • these materials also comprise an amount of the corresponding mono-ester.
  • a third group of QACs suitable for use in the invention is represented by formula (III): (R 1 ) 2 -N + -[(CH 2 ) n -T-R 2 ] 2 X - (III) wherein each R 1 group is independently selected from C 1-4 alkyl, or C 2-4 alkenyl groups; and wherein each R 2 group is independently selected from C 8-28 alkyl or alkenyl groups; and n, T, and X - are as defined above.
  • Preferred materials of this third group include bis(2-tallowoyloxyethyl)dimethyl ammonium chloride and hardened versions thereof.
  • the iodine value of the quaternary ammonium fabric conditioning material is preferably from 0 to 80, more preferably from 0 to 60, and most preferably from 0 to 45.
  • the iodine value may be chosen as appropriate.
  • Essentially saturated material having an iodine value of from 0 to 5, preferably from 0 to 1 may be used in the compositions of the invention. Such materials are known as "hardened" quaternary ammonium compounds.
  • a further preferred range of iodine values is from 20 to 60, preferably 25 to 50, more preferably from 30 to 45.
  • a material of this type is a "soft" triethanolamine quaternary ammonium compound, preferably triethanolamine di-alkylester methylsulphate. Such ester-linked triethanolamine quaternary ammonium compounds comprise unsaturated fatty chains.
  • Iodine value refers to, the fatty acid used to produce the QAC, the measurement of the degree of unsaturation present in a material by a method of nmr spectroscopy as described in Anal. Chem., 34, 1136 (1962) Johnson and Shoolery .
  • a further type of softening compound may be a non-ester quaternary ammonium material represented by formula (IV): wherein each R 1 group is independently selected from C 1-4 alkyl, hydroxyalkyl or C 2-4 alkenyl groups; each R 2 group is independently selected from C 8-28 alkyl or alkenyl groups, and X - is as defined above.
  • compositions of the invention may optionally contain a non-cationic softening material, which is preferably an oily sugar derivative.
  • An oily sugar derivative is a liquid or soft solid derivative of a cyclic polyol (CPE) or of a reduced saccharide (RSE), said derivative resulting from 35 to 100 % of the hydroxyl groups in said polyol or in said saccharide being esterified or etherified.
  • the derivative has two or more ester or ether groups independently attached to a C 8 -C 22 alkyl or alkenyl chain.
  • the CPE or RSE does not have any substantial crystalline character at 20°C. Instead it is preferably in a liquid or soft solid state as herein defined at 20°C.
  • liquid or soft solid (as hereinafter defined) CPEs or RSEs suitable for use in the present invention result from 35 to 100% of the hydroxyl groups of the starting cyclic polyol or reduced saccharide being esterified or etherified with groups such that the CPEs or RSEs are in the required liquid or soft solid state.
  • These groups typically contain unsaturation, branching or mixed chain lengths.
  • the CPEs or RSEs have 3 or more ester or ether groups or mixtures thereof, for example 3 to 8, especially 3 to 5. It is preferred if two or more of the ester or ether groups of the CPE or RSE are independently of one another attached to a C 8 to C 22 alkyl or alkenyl chain.
  • the C 8 to C 22 alkyl or alkenyl groups may be branched or linear carbon chains.
  • the CPE or RSE contains at least 35 % tri or higher esters, e.g. at least 40 %.
  • the CPE or RSE has at least one of the chains independently attached to the ester or ether groups having at least one unsaturated bond. This provides a cost effective way of making the CPE or RSE a liquid or a soft solid. It is preferred if predominantly unsaturated fatty chains, derived from, for example, rape oil, cotton seed oil, soybean oil, oleic, tallow, palmitoleic, linoleic, erucic or other sources of unsaturated vegetable fatty acids, are attached to the ester/ether groups.
  • ester or ether chains of the CPE or RSE.
  • the ester or ether chains of the CPE or RSE are preferably predominantly unsaturated.
  • Preferred CPEs or RSEs include sucrose tetratallowate, sucrose tetrarapeate, sucrose tetraoleate, sucrose tetraesters of soybean oil or cotton seed oil, cellobiose tetraoleate, sucrose trioleate, sucrose triapeate, sucrose pentaoleate, sucrose pentarapeate, sucrose hexaoleate, sucrose hexarapeate, sucrose triesters, pentaesters and hexaesters of soybean oil or cotton seed oil, glucose tiroleate, glucose tetraoleate, xylose trioleate, or sucrose tetra-,tri-, penta- or hexa- esters with any mixture of predominantly unsaturated fatty acid chains.
  • CPEs or RSEs are those with monounsaturated fatty acid chains, i.e. where any polyunsaturation has been removed by partial hydrogenation.
  • CPEs or RSEs based on polyunsaturated fatty acid chains e.g. sucrose tetralinoleate, may be used provided most of the polyunsaturation has been removed by partial hydrogenation.
  • liquid CPEs or RSEs are any of the above but where the polyunsaturation has been removed through partial hydrogenation.
  • Preferably 40 % or more of the fatty acid chains contain an unsaturated bond, more preferably 50 % or more, most preferably 60% or more. In most cases 65 % to 100 %, e.g. 65 % to 95 % contain an unsaturated bond.
  • CPEs are preferred for use with the present invention.
  • Inositol is a preferred example of a cyclic polyol. Inositol derivatives are especially preferred.
  • cyclic polyol encompasses all forms of saccharides. Indeed saccharides are especially preferred for use with this invention. Examples of preferred saccharides for the CPEs or RSEs to be derived from are monosaccharides and disaccharides.
  • Examples of monosaccharides include xylose, arabinose, galactose, fructose, sorbose and glucose. Glucose is especially preferred.
  • Examples of disaccharides include maltose, lactose, cellobiose and sucrose. Sucrose is especially preferred.
  • An example of a reduced saccharide is sorbitan.
  • the liquid or soft solid CPEs can be prepared by methods well known to those skilled in the art. These include acylation of the cyclic polyol or reduced saccharide with an acid chloride; trans-esterification of the cyclic polyol or reduced saccharide fatty acid esters using a variety of catalysts; acylation of the cyclic polyol or reduced saccharide with an acid anhydride and acylation of the cyclic polyol or reduced saccharide with a fatty acid. See for instance US 4 386 213 and AU 14416/88 (both P&G).
  • the CPE or RSE has 3 or more, preferably 4 or more ester or ether groups. If the CPE is a disaccharide it is preferred if the disaccharide has 3 or more ester or ether groups. Particularly preferred CPEs are esters with a degree of esterification of 3 to 5, for example, sucrose tri, tetra and penta esters.
  • each ring of the CPE has one ether or ester group, preferably at the C 1 position.
  • Suitable examples of such compounds include methyl glucose derivatives.
  • CPEs examples include esters of alkyl(poly)glucosides, in particular alkyl glucoside esters having a degree of polymerisation from 1 to 2.
  • the length of the unsaturated (and saturated if present) chains in the CPE or RSE is C 8 -C 22 , preferably C 12 -C 22 . It is possible to include one or more chains of C 1 -C 8 , however these are less preferred.
  • the liquid or soft solid CPEs or RSEs which are suitable for use in the present invention are characterised as materials having a solid:liquid ratio of between 50:50 and 0:100 at 20°C as determined by T 2 relaxation time NMR, preferably between 43:57 and 0:100, most preferably between 40:60 and 0:100, such as, 20:80 and 0:100.
  • the T 2 NMR relaxation time is commonly used for characterising solid:liquid ratios in soft solid products such as fats and margarines.
  • any component of the signal with a T 2 of less than 100 ⁇ s is considered to be a solid component and any component with T 2 ⁇ 100 ⁇ s is considered to be a liquid component.
  • the prefixes e.g. tetra and penta
  • the compounds exist as a mixture of materials ranging from the monoester to the fully esterified ester. It is the average degree of esterification which is used herein to define the CPEs and RSEs.
  • the HLB of the CPE or RSE is typically between 1 and 3.
  • the CPE or RSE is preferably present in the composition in an amount of 0.5-50% by weight, based upon the total weight of the composition, more preferably 1-30% by weight, such as 2-25%, e.g. 2-20%.
  • the CPEs and RSEs for use in the compositions of the invention include sucrose tetraoleate, sucrose pentaerucate, sucrose tetraerucate and sucrose pentaoleate.
  • the fabric conditioner composition comprises cationic polysaccharide and non-ionic polysaccharide. In one embodiment, these are pre-mixed prior to addition to the composition and in another embodiment these components are added separately. Preferably the cationic polysaccharide and non-ionic polysaccharide are mixed prior to addition to the fabric conditioner composition.
  • the cationic polysaccharide comprises at least one cationic polysaccharide.
  • the cationic polysaccharide can be obtained by chemically modifying polysaccharides, generally natural polysaccharides. By such modification, cationic side groups can be introduced into the polysaccharide backbone.
  • the cationic groups borne by the cationic polysaccharide according to the present invention are quaternary ammonium groups.
  • the cationic polysaccharides of the present invention include but are not limited to: cationic cellulose and derivatives thereof, cationic starch and derivatives thereof, cationic callose and derivatives thereof, cationic xylan and derivatives thereof, cationic mannan and derivatives thereof, cationic galactomannan and derivatives thereof, such as cationic guar and derivatives thereof.
  • Cationic celluloses suitable for the present invention include cellulose ethers comprising quaternary ammonium groups, cationic cellulose copolymers or celluloses grafted with a water-soluble quaternary ammonium monomer.
  • the cellulose ethers comprising quaternary ammonium groups are described in French patent 1,492,597 and in particular include the polymers sold under the names "JR” (JR 400, JR 125, JR 30M) or "LR” (LR 400, LR 30M) by the company Dow. These polymers are also defined in the CTFA dictionary as hydroxyethylcellulose quaternary ammoniums that have reacted with an epoxide substituted with a trimethylammonium group. Suitable cationic celluloses also include LR3000 KC from company Solvay.
  • cationic cellulose copolymers or the celluloses grafted with a water-soluble quaternary ammonium monomer are described especially in patent U.S. Pat. No. 4,131,576 , such as hydroxyalkylcelluloses, for instance hydroxymethyl-, hydroxyethyl- or hydroxypropylcelluloses grafted especially with a methacryloyl-ethyltrimethylammonium, methacrylamidopropyltrimethylammonium or dimethyl-diallylammonium salt.
  • the commercial products corresponding to this definition are more particularly the products sold under the names Celquat® L 200 and Celquat® H 100 by the company Akzo Nobel.
  • Cationic starches suitable for the present invention include the products sold under Polygelo® (cationic starches from Sigma), the products sold under Softgel®, Amylofax® and Solvitose® (cationic starches from Avebe), CATO from National Starch.
  • Suitable cationic galactomannans can be those derived from Fenugreek Gum, Konjac Gum, Tara Gum, Cassia Gum or Guar Gum.
  • the cationic polysaccharide is a cationic guar.
  • Guars are polysaccharides composed of the sugars galactose and mannose.
  • the backbone is a linear chain of ⁇ 1,4-linked mannose residues to which galactose residues are 1,6-linked at every second mannose in average, forming short side units.
  • the cationic guars are cationic derivatives of guars.
  • the cationic group may be a quaternary ammonium group bearing 3 radicals, which may be identical or different, preferably chosen from hydrogen, alkyl, hydroxyalkyl, epoxyalkyl, alkenyl, or aryl, preferably containing 1 to 22 carbon atoms, more particularly 1 to 14 and advantageously 1 to 3 carbon atoms.
  • the counterion is generally a halogen.
  • One example of the halogen is chlorine.
  • Examples of the quaternary ammonium group include : 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CHPTMAC), 2,3-epoxypropyl trimethyl ammonium chloride (EPTAC), diallyldimethyl ammonium chloride (DMDAAC), vinylbenzene trimethyl ammonium chloride, trimethylammonium ethyl metacrylate chloride, methacrylamidopropyltrimethyl ammonium chloride (MAPTAC), and tetraalkylammonium chloride.
  • CHPTMAC 3-chloro-2-hydroxypropyl trimethyl ammonium chloride
  • EPTAC 2,3-epoxypropyl trimethyl ammonium chloride
  • DMDAAC diallyldimethyl ammonium chloride
  • vinylbenzene trimethyl ammonium chloride trimethylammonium ethyl metacrylate chloride
  • METAC methacrylamidopropyltrimethyl ammonium chloride
  • cationic functional group in the cationic polysaccharides is trimethylamino(2-hydroxyl)propyl, with a counter ion.
  • Various counter ions can be utilized, including but not limited to halides, such as chloride, fluoride, bromide, and iodide, sulfate, notrate, methylsulfate, and mixtures thereof.
  • the cationic guars of the present invention may be chosen from the group consisting of: cationic hydroxyalkyl guars, such as cationic hydroxyethyl guar, cationic hydroxypropyl guar, cationic hydroxybutyl guar, and cationic carboxylalkyl guars including cationic carboxymethyl guar, cationic alkylcarboxy guars such as cationic carboxylpropyl guar and cationic carboxybutyl guar, cationic carboxymethylhydroxypropyl guar.
  • the cationic polysaccharide of the present invention is guar hydroxypropyltrimonium chloride or hydroxypropyl guar hydroxypropyltrimonium chloride.
  • the cationic polysaccharide, of the present invention may have an average Molecular Weight (Mw) of between 100,000 daltons and 3,500,000 daltons, preferably between 100,000 daltons and 1,500,000 daltons, more preferably between 100,000 daltons and 1,000,000 daltons.
  • Mw average Molecular Weight
  • the composition of the present invention comprises from 0.01 to 2 wt % of cationic polysaccharide based on the total weight of the composition. More preferably, 0.025 to 1 wt % of cationic polysaccharide based on the total weight of the composition. Most preferably, 0.04 to 0.8 wt % of cationic polysaccharide based on the total weight of the composition.
  • DS Degree of Substitution
  • cationic polysaccharides such as cationic guars
  • DS is the average number of hydroxyl groups substituted per sugar unit.
  • DS may notably represent the number of the carboxymethyl groups per sugar unit.
  • DS may be determined by titration.
  • the DS of the cationic polysaccharide is preferably in the range of 0.01 to 1, more preferably 0.05 to 1, most preferably 0.05 to 0.2.
  • CD Charge Density
  • CD of the cationic polysaccharide, such as the cationic guar is preferably in the range of 0.1 to 3 (meq/gm), more preferably 0.1 to 2 (meq/gm), most preferably 0.1 to 1 (meq/gm).
  • the non-ionic polysaccharide comprises at least one non-ionic polysaccharide.
  • the nonionic polysaccharide can be a modified nonionic polysaccharide or a non-modified nonionic polysaccharide.
  • the modified non-ionic polysaccharide may comprise hydroxyalkylation and/or esterification.
  • the level of modification of non-ionic polysaccharides can be characterized by Molar Substitution (MS), which means the average number of moles of substituents, such as hydroxypropyl groups, per mole of the monosaccharide unit.
  • MS can be determined by the Zeisel-GC method, notably based on the following literature reference: K. L. Hodges, W. E. Kester, D. L. Wiederrich, and J. A. Grover, "Determination of Alkoxyl Substitution in Cellulose Ethers by Zeisel-Gas Chromatography", Analytical Chemistry, Vol. 51, No. 13, November 1979 .
  • the MS of the modified nonionic polysaccharide is in the range of 0 to 3, more preferably 0.1 to 3 and most preferably 0.1 to 2.
  • the nonionic polysaccharide of the present invention may be especially chosen from glucans, modified or non-modified starches (such as those derived, for example, from cereals, for instance wheat, corn or rice, from vegetables, for instance yellow pea, and tubers, for instance potato or cassava), amylose, amylopectin, glycogen, dextrans, celluloses and derivatives thereof (methylcelluloses, hydroxyalkylcelluloses, ethylhydroxyethylcelluloses), mannans, xylans, lignins, arabans, galactans, galacturonans, chitin, chitosans, glucuronoxylans, arabinoxylans, xyloglucans, glucomannans, pectic acids and pectins, arabinogalactans, carrageenans, agars, gum arabics, gum tragacanths, ghatti gums, karaya gums, carob gums,
  • celluloses that are especially used are hydroxyethylcelluloses and hydroxypropylcelluloses. Mention may be made of the products sold under the names Klucel® EF, Klucel® H, Klucel® LHF, Klucel® MF and Klucel® G by the company Aqualon, and Cellosize® Polymer PCG-10 by the company Amerchol, and HEC, HPMC K200, HPMC K35M by the company Ashland.
  • the nonionic polysaccharide is a nonionic guar.
  • the nonionic guar can be modified or non-modified.
  • the non-modified nonionic guars include the products sold under the name Vidogum® GH 175 by the company Unipectine and under the names Meypro®-Guar 50 and Jaguar® C by the company Solvay.
  • the modified nonionic guars are especially modified with C1-C6 hydroxyalkyl groups.
  • the hydroxyalkyl groups that may be mentioned, for example, are hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups.
  • guars are well known in the prior art and can be prepared, for example, by reacting the corresponding alkene oxides such as, for example, propylene oxides, with the guar so as to obtain a guar modified with hydroxypropyl groups.
  • the nonionic polysaccharide, such as the nonionic guar, of the present invention may have an average Molecular Weight (Mw) of between 100,000 daltons and 3,500,000 daltons, preerably between 500,000 daltons and 3,500,000 daltons.
  • Mw average Molecular Weight
  • the composition of the present invention comprises from 0.01 to 2 wt % of non-ionic polysaccharide based on the total weight of the composition. More preferably, 0.025 to 1 wt % of non-ionic polysaccharide based on the total weight of the composition. Most preferably, 0.04 to 0.8 wt % of non-ionic polysaccharide based on the total weight of the composition.
  • the fabric conditioning composition comprises combined weight of the cationic polysaccharide and non-ionic polysaccharide of 0.02 to 4 wt. %, more preferably 0.05 to 2 wt. % and most preferably 0.08 to 1.6 wt. %.
  • the ratio of the weight of the cationic polysaccharide in the composition and the weight of the nonionic polysaccharide in the composition is between 1:10 and 10:1, more preferably, between 1:3 and 3:1.
  • the cationic polysaccharide and non-ionic polysaccharide are mixed prior to addition to the fabric conditioner composition.
  • the mix is prepared as a suspension in water.
  • the ratio of the weight of the quaternary ammonium compound in the composition and the total weight of the cationic polysaccharide and the nonionic polysaccharide in the composition is between 100:1 and 2:1, more preferably, between 30:1 and 5:1.
  • the block copolymer of the current invention comprises a combination of polypropylene glycol and polyethylene glycol.
  • the block copolymer of the present invention is preferably a poloxamer polymer.
  • Poloxamer polymers are nonionic triblock copolymers comprising a central hydrophobic chain of polypropylene glycol flanked by two hydrophilic chains of polyethylene glycol.
  • the block co-polymer preferably comprises a polypropylene glycol block having a molar mass of 1400 to 4000 g/mol and 30 to 80 % polyethyleneglycol by weight of the final molecule.
  • the molar mass of the polypropylene glycol block is 1400 to 2200 g/mol and the percentage of polyethyleneglycol is 30 to 80 % by weight of the final molecule.
  • the molar mass of the polypropylene glycol block is 1400 to 2200 g/mol and the percentage of polyethyleneglycol is 65 to 85 % by weight of the final molecule.
  • block copolymers suitable for the present invention are available under the trade name Synperonic from Croda and Pluronic® from BASF for example; Pluronic® PE 6800 ex. BASF and Synperonic PE/L64 ex. Croda.
  • the fabric conditioning composition comprises 0.01 to 5 wt. % of the block co-polymer, more preferably 0.025 to 2 wt. % of the block co-polymer, most preferably 0.05 to 1 wt. %.
  • compositions of the present invention may further comprise a thickening polymer.
  • Thickening polymers particularly useful in the compositions of the invention include those described in WO2010/078959 (SNF S.A.S.). These are crosslinked water swellable cationic copolymers of at least one cationic monomer and optionally other non-ionic and/or anionic monomers.
  • Preferred polymers of this type are copolymers of acrylamide and methacrylate. Most preferred are copolymers of acrylamide and trimethylaminoethylacrylate chloride.
  • the composition may comprise one crosslinked water swellable cationic copolymer. In one embodiment of the invention it may be preferred that the composition comprises at least two different crosslinked water swellable cationic copolymers.
  • Preferred polymers comprise less than 25 % of water soluble polymers by weight of the total polymer, preferably less than 20 %, and most preferably less than 15 %, and a cross-linking agent concentration of from 500 ppm to 5000 ppm by weight relative to the polymer, preferably from 750 ppm to 5000 ppm by weight, more preferably from 1000 to 4500 ppm by weight as determined by a suitable metering method such as the following method described on page 4 of patent EP 2373773 B1 .
  • This method is based on the separation of cross linked polymer microgels from a solution of polymer by centrifugation.
  • the polymer content before and after centrifugation is determined by colloid titration, based on the stoichiometric precipitation of charged colloidal particles by titration with oppositely charged polymer using a visual indicator.
  • Enough of this dispersion is added to deionised water with stirring to produce about 200g viscous paste containing 0.5% by weight polymer. This is stirred at about 500 rpm for 45 minute using 3 blades impeller.
  • Nalgene centrifuge tubes are filled and balanced by weighing with the polymer solution (using about 40ml) and centrifuged for 1.5 hours (15300 rpm). The top 5 g of supernatant polymer solution are carefully pipetted off. The supernatant polymer solution and a sample of the entire aqueous composition prior to centrifugation are subjected to colloid titration to determine the amount of soluble polymer in the supernatant liquor after centrifuging. Thus it gives a value for the percentage of soluble polymer in the initial polymer.
  • the colloid titration is performed as follows:
  • Titration is run on polymer solution acidified with chlorhydric acid (pH about 4) and coloured with 2-3 droplet of blue indicator. PVSK is added slowly until the colour turns from blue to violet.
  • % of solubles is then determined according to volume of PVSK measured at equilibrium, polymer weight, corresponding dilution and reagents molarity.
  • the cross-linking agent concentration must be higher than about 500 ppm by weight relative to the polymer and preferably higher than about 750 ppm by weight when the crosslinking agent used is the methylene bisacrylamide, or other cross-linking agents at concentrations that lead to equivalent cross-linking levels of from 10 to 10,000 ppm by weight.
  • Suitable cationic monomers are selected from the group consisting of the following monomers and derivatives and their quaternary or acid salts: dimethylaminopropylmethacrylamide, dimethylaminopropylacrylamide, diallylamine, methyldiallylamine, dialkylaminoalkyl-acrylates and methacrylates, dialkylaminoalkyl-acrylamides or -methacrylamides.
  • the monomers may also contain hydrophobic groups.
  • cross-linking agents methylene bisacrylamide (MBA), ethylene glycol diacrylate, polyethylene glycol dimethacrylate, diacrylamide, triallylamine, cyanomethylacrylate, vinyl oxyethylacrylate or methacrylate and formaldehyde, glyoxal, compounds of the glycidyl ether type such as ethyleneglycol diglycidyl ether,or the epoxydes or any other means familiar to the expert permitting cross-linking.
  • MBA methylene bisacrylamide
  • ethylene glycol diacrylate polyethylene glycol dimethacrylate
  • diacrylamide diacrylamide
  • triallylamine cyanomethylacrylate
  • vinyl oxyethylacrylate or methacrylate and formaldehyde glyoxal
  • compounds of the glycidyl ether type such as ethyleneglycol diglycidyl ether
  • epoxydes or any other means familiar to the expert permitting cross-linking.
  • the cross-linking rate preferably ranges from 800 to 5000 ppm (on the basis of methylene bisacrylamide) by weight relative to the polymer or equivalent cross-linking with a cross-linking agent of different efficiency.
  • the degree of nonlinearity can additionally be controlled by the inclusion of chain transfer agents (such as isopropyl alcohol, sodium hypophosphite, mercaptoethanol) in the polymerisation mixture in order to control the polymeric chain's length and the cross-linking density.
  • chain transfer agents such as isopropyl alcohol, sodium hypophosphite, mercaptoethanol
  • the amount of polymer used in the compositions of the invention is suitably from 0.001 to 0.5 wt %, preferably from 0.005 to 0.4 wt %, more preferably from 0.05 to 0.35 wt % and most preferably from 0.1 to 0.25 wt %, by weight of the total composition.
  • An example of a preferred polymer is Flosoft 270LS ex SNF and Flosoft 222 ex SNF.
  • compositions of the invention may further contain a silicone based fabric softening agent.
  • a silicone based fabric softening agent Preferably the fabric softening silicone is a polydimethylsiloxane.
  • the fabric softening silicones include but are not limited to 1) non-functionalized silicones such as polydimethylsiloxane (PDMS) or alkyl (or alkoxy) functional silicones 2) functionalized silicones or copolymers with one or more different types of functional groups such as amino, phenyl, polyether, acrylate, siliconhydride, carboxylic acid, quaternized nitrogen, etc.
  • PDMS polydimethylsiloxane
  • alkyl (or alkoxy) functional silicones 2) functionalized silicones or copolymers with one or more different types of functional groups such as amino, phenyl, polyether, acrylate, siliconhydride, carboxylic acid, quaternized nitrogen, etc.
  • Suitable silicones may be selected from polydialkylsiloxanes, preferably polydimethylsiloxane more preferably amino functionalised silicones; anionic silicones and carboxyl functionalised silicone.
  • An amino silicone that may also be used, for example, Arristan 64, ex CHT or Wacker CT45E, ex Wacker.
  • the particle size can be in the range from about 1 nm to 100 microns and preferably from about 10 nm to about 10 microns including microemulsions ( ⁇ 150 nm), standard emulsions (about 200 nm to about 500 nm) and macroemulsions (about 1 micron to about 20 microns).
  • Polyalkyl wax emulsions for example polyethylene wax may also be used as softening agents in the composition of the invention.
  • Co-softeners may be used. When employed, they are typically present at from 0.1 to 20% and particularly at from 0.3 to 10%, based on the total weight of the composition.
  • Preferred co-softeners include fatty esters, and fatty N-oxides.
  • Fatty esters that may be employed include fatty monoesters, such as glycerol monostearate, fatty sugar esters, such as those disclosed WO 01/46361 (Unilever).
  • compositions of the present invention may comprise a fatty complexing agent.
  • Suitable fatty complexing agents include fatty alcohols and fatty acids. Of these, fatty alcohols are most preferred.
  • the fatty complexing material improves the viscosity profile of the composition by complexing with mono-ester component of the fabric conditioner material thereby providing a composition which has relatively higher levels of di-ester and tri-ester linked components.
  • the di-ester and tri-ester linked components are more stable and do not affect initial viscosity as detrimentally as the mono-ester component.
  • compositions comprising quaternary ammonium materials based on TEA may destabilise the composition through depletion flocculation.
  • depletion flocculation is significantly reduced.
  • the fatty complexing agent at the increased levels as required by the present invention, "neutralises” the mono-ester linked component of the quaternary ammonium material. This in situ di-ester generation from mono-ester and fatty alcohol also improves the softening of the composition.
  • Preferred fatty acids include hardened tallow fatty acid (available under the trade name PristereneTM, ex Croda).
  • Preferred fatty alcohols include hardened tallow alcohol (available under the trade names StenolTM and HydrenolTM, ex BASF and LaurexTM CS, ex Huntsman).
  • the fatty complexing agent may be preferably present in an amount greater than 0.3 to 5% by weight based on the total weight of the composition. More preferably, the fatty component may be present in an amount of from 0.4 to 4%.
  • the weight ratio of the mono-ester component of the quaternary ammonium fabric softening material to the fatty complexing agent is preferably from 5:1 to 1:5, more preferably 4:1 to 1:4, most preferably 3:1 to 1:3, e.g. 2:1 to 1:2.
  • compositions may further comprise a nonionic surfactant.
  • a nonionic surfactant typically these can be included for the purpose of stabilising the compositions.
  • Suitable nonionic surfactants include addition products of ethylene oxide with fatty alcohols, fatty acids and fatty amines. Any of the alkoxylated materials of the particular type described hereinafter can be used as the nonionic surfactant.
  • Suitable surfactants are substantially water soluble surfactants of the general formula (V): R-Y-(C 2 H 4 O) z -CH 2 -CH 2 -OH (V) where R is selected from the group consisting of primary, secondary and branched chain alkyl and/or acyl hydrocarbyl groups; primary, secondary and branched chain alkenyl hydrocarbyl groups; and primary, secondary and branched chain alkenyl-substituted phenolic hydrocarbyl groups; the hydrocarbyl groups having a chain length of from 8 to about 25, preferably 10 to 20, e.g. 14 to 18 carbon atoms.
  • Y is typically: -O-, -C(O)O-, -C(O)N(R)- or -C(O)N(R)R- in which R has the meaning given above for formula (V), or can be hydrogen; and Z is at least about 8, preferably at least about 10 or 11.
  • the nonionic surfactant has an HLB of from about 7 to about 20, more preferably from 10 to 18, e.g. 12 to 16.
  • GenapolTM C200 (Clariant) based on coco chain and 20 EO groups is an example of a suitable nonionic surfactant.
  • the nonionic surfactant is present in an amount from 0.01 to 10%, more preferably 0.1 to 5 by weight, based on the total weight of the composition.
  • a class of preferred non-ionic surfactants include addition products of ethylene oxide and/or propylene oxide with fatty alcohols, fatty acids and fatty amines. These are preferably selected from addition products of (a) an alkoxide selected from ethylene oxide, propylene oxide and mixtures thereof with (b) a fatty material selected from fatty alcohols, fatty acids and fatty amines.
  • Y is typically: -O-, -C(O)O-, -C(O)N(R)- or -C(O)N(R)R- in which R has the meaning given above for formula (VI), or can be hydrogen; and Z is at least about 6, preferably at least about 10 or 11.
  • LutensolTM AT25 (BASF) based on coco chain and 25 EO groups is an example of a suitable non-ionic surfactant.
  • suitable surfactants include Renex 36 (Trideceth-6), ex Croda; Tergitol 15-S3, ex Dow Chemical Co.; Dihydrol LT7, ex Thai Ethoxylate ltd; Cremophor CO40, ex BASF and Neodol 91-8, ex Shell.
  • compositions may comprise other ingredients of fabric conditioner liquids as will be known to the person skilled in the art.
  • antifoams perfumes and fragrances (both free oil and encapsulated material), insect repellents, shading or hueing dyes, preservatives (e.g. bactericides), pH buffering agents, perfume carriers, hydrotropes, anti-redeposition agents, soil-release agents, polyelectrolytes, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, dyes, colorants, sunscreens, anti-corrosion agents, drape imparting agents, anti-static agents, sequestrants and ironing aids.
  • the products of the invention may contain pearlisers and/or opacifiers.
  • a preferred sequestrant is HEDP, an abbreviation for Etidronic acid or 1-hydroxyethane 1,1-diphosphonic acid.
  • the products of the current invention comprise water.
  • compositions are rinse-added softening compositions suitable for use in a laundry process.
  • the compositions are pourable liquids.
  • the liquid compositions have a pH ranging from about 2.0 to 7, preferably from about 2.5 to 5.5, most preferably about 3.5 to 4.5.
  • the compositions of the invention may also contain pH modifiers preferably hydrochloric acid, lactic acid or sodium hydroxide.
  • the composition is preferably a ready-to-use liquid comprising an aqueous phase.
  • the aqueous phase may comprise water-soluble species, such as mineral salts or short chain (C 1-4 ) alcohols.
  • the composition is preferably for use in the rinse cycle of a home textile laundering operation, where, it may be added directly in an undiluted state to a washing machine, e.g. through a dispenser drawer or, for a top-loading washing machine, directly into the drum.
  • the compositions may also be used in a domestic hand-washing laundry operation.
  • the current invention provides a method for improving stability of a fabric conditioning composition, by adding to the composition: 0.5 to 20 wt.% of a fabric softening active, which is a quaternary ammonium compound, 0.01 to 2 wt.% cationic polysaccharide, 0.01 to 2 wt.% non-ionic polysaccharide, 0.01 to 5 wt.% block copolymer of polypropylene glycol and polyethylene glycol and water.
  • a fabric softening active which is a quaternary ammonium compound
  • 0.01 to 2 wt.% cationic polysaccharide 0.01 to 2 wt.% non-ionic polysaccharide
  • 0.01 to 5 wt.% block copolymer of polypropylene glycol and polyethylene glycol and water 0.01 to 5 wt.% block copolymer of polypropylene glycol and polyethylene glycol and water.
  • the block co-polymer is added to the main composition in a premix with the fabric softening active.
  • the block co-polymer is added to the main composition after the fabric softening active.
  • Table 1 A composition according to the current invention; w.t. % TEA Quat 1 4 Free perfume 0.92 Encapsulate Perfume 2 0.86 Cationic polysaccharide 3 0.2 Non-ionic poly saccharide 4 0.2 Pluronic PE 6800 5 0.5 Dyes 0.005 Minors 0.031 Water To 100 TEA Quat 1 - partially hardened tallow TEA quat in IPA, Ex. Stepan Encapsulate Perfume 2 - melamine formaldehyde perfume microcapsule, weight of encapsulated perfume as received ex.
  • compositions were made according to Example 1, Preparation 1 and tested for stability. Stability was assessed visually by looking for phase separation.
  • Composition A is a comparative example.
  • Table 2 Test compositions Composition A (w.t.%) Composition 1 (w.t.%) TEA Quat 1 4 4 Free perfume 1.17 0.92 Encapsulate Perfume 2 1.429 (slurry weight) 1.07 (slurry weight) Cationic polysaccharide 3 0.4 0.2 Non-ionic poly saccharide 4 - 0.2 Pluronic PE 6800 5 - 0.5 Dyes 0.005 0.005 Minors 0.031 0.031 Water To 100 To 100
  • Table 3 Stability results Weeks to Failure 40°C 37°C 33°C 20°C Composition A ⁇ 1 ⁇ 1 ⁇ 1 ⁇ 1 Composition 1 15 19 26 60
  • composition 1 is significantly more stable than the compositions with only a cationic polysaccharide with the fabric softening active.

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Claims (12)

  1. Textilpflegezusammensetzung, umfassend:
    a. 0,5 bis 20 Gew.-% eines Textilweichmachers, der eine quaternäre Ammoniumverbindung darstellt;
    b. 0,01 bis 2 Gew.-% kationisches Polysaccharid;
    c. 0,01 bis 2 Gew.-% nicht-ionisches Polysaccharid;
    d. 0,01 bis 5 Gew.-% eines Blockcopolymers von Polypropylenglycol und Polyethylenglycol; und
    e. Wasser.
  2. Textilpflegezusammensetzung nach Anspruch 1, wobei das Blockcopolymer ein Poloxamer-Polymer ist.
  3. Textilpflegezusammensetzung nach irgendeinem vorhergehenden Anspruch, wobei das Blockcopolymer einen Polypropylenglycol-Block mit einer Molmasse von 1400 bis 4000 g/mol und 30 bis 80% Polyethylenglycol, bezogen auf das Gewicht des finalen Moleküls, umfasst.
  4. Textilpflegezusammensetzung nach irgendeinem vorhergehenden Anspruch, wobei das kationische Polysaccharid kationisches Guar ist.
  5. Textilpflegezusammensetzung nach irgendeinem vorhergehenden Anspruch, wobei das nicht-ionische Polysaccharid nicht-ionisches Guar ist.
  6. Textilpflegezusammensetzung nach irgendeinem vorhergehenden Anspruch, wobei das Gewichtsverhältnis des kationischen Polysaccharids in der Zusammensetzung zu dem nicht-ionischen Polysaccharid in der Zusammensetzung 1:10 bis 10:1 beträgt.
  7. Textilpflegezusammensetzung nach irgendeinem vorhergehenden Anspruch, wobei das kombinierte Gewicht des kationischen Polysaccharids und des nicht-ionischen Polysaccharids in der Zusammensetzung 0,02 bis 4 Gew.-% der gesamten Zusammensetzung beträgt.
  8. Textilpflegezusammensetzung nach irgendeinem vorhergehenden Anspruch, wobei das kationische Polysaccharid und das nicht-ionische Polysaccharid vor der Zugabe zu der Textilpflegezusammensetzung gemischt werden.
  9. Textilpflegezusammensetzung nach irgendeinem vorhergehenden Anspruch, wobei die quaternäre Ammoniumverbindung eine Ester-verknüpfte quaternäre Ammoniumverbindung ist.
  10. Textilpflegezusammensetzung nach irgendeinem vorhergehenden Anspruch, wobei das Gewichtsverhältnis der quaternären Ammoniumverbindung in der Zusammensetzung zu dem Gesamtgewicht des kationischen Polysaccharids und des nicht-ionischen Polysaccharids in der Zusammensetzung zwischen 2:1 und 100:1 liegt.
  11. Verfahren zum Verbessern der Stabilität einer Textilpflegezusammensetzung, indem 0,5 bis 20 Gew.-% eines Textilweichmachers, der eine quaternäre Ammoniumverbindung darstellt, 0,01 bis 2 Gew.-% kationisches Polysaccharid, 0,01 bis 2 Gew.-% nicht-ionisches Polysaccharid, 0,01 bis 5 Gew.-% Blockcopolymer von Polypropylenglycol und Polyethylenglycol und Wasser zu der Zusammensetzung gegeben werden.
  12. Verfahren nach Anspruch 11, wobei das Blockcopolymer von Polypropylenglycol und Polyethylenglycol mit oder nach dem Textilweichmacher in die Zusammensetzung gegeben werden.
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JP6632016B1 (ja) * 2019-07-05 2020-01-15 竹本油脂株式会社 炭素繊維前駆体用処理剤、及び炭素繊維前駆体

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