CA2020948A1 - Fabric softening composition - Google Patents
Fabric softening compositionInfo
- Publication number
- CA2020948A1 CA2020948A1 CA002020948A CA2020948A CA2020948A1 CA 2020948 A1 CA2020948 A1 CA 2020948A1 CA 002020948 A CA002020948 A CA 002020948A CA 2020948 A CA2020948 A CA 2020948A CA 2020948 A1 CA2020948 A1 CA 2020948A1
- Authority
- CA
- Canada
- Prior art keywords
- composition
- fabric softening
- amphoteric
- cellulose ether
- fabric
- 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
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
- C11D1/88—Ampholytes; Electroneutral 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/75—Amino oxides
-
- 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
- C11D1/88—Ampholytes; Electroneutral compounds
- C11D1/90—Betaines
-
- 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
- C11D3/225—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin etherified, e.g. CMC
Abstract
ABSTRACT
A fabric softening composition is provided which comprises:
(i) an amphoteric fabric softening material;
(ii) a nonionic cellulose ether having a gel point of less than 58°C, an HLB of between 3.1 and 4.3, said cellulose ether being substituted with C1-3 alkyl and/or hydroxyalkyl groups;
said composition preferably having a pH of between 1.5 and 6.0 at a concentration of 1 g/l of amphoteric softening material in water at 25°C.
A fabric softening composition is provided which comprises:
(i) an amphoteric fabric softening material;
(ii) a nonionic cellulose ether having a gel point of less than 58°C, an HLB of between 3.1 and 4.3, said cellulose ether being substituted with C1-3 alkyl and/or hydroxyalkyl groups;
said composition preferably having a pH of between 1.5 and 6.0 at a concentration of 1 g/l of amphoteric softening material in water at 25°C.
Description
i 2~3~8 FABRIC SOFTENING COMPOSITION
This invention relates to a fabric softening composition and a process for the preparation thereof. In particular it relates to a fabric softening composition, which comprises an amphoteric material as active ingredient and which is intended for addition to the rinse or drying step of a fabric laundering process, and a process for the preparation thereof.
British Patent Specification No. 1 260 584 (ARMOUR) discIoses a method of softening fabrics by the use of a composition containing a quaternary ammonium compound and a tertiary amine oxide. The use of the amine oxide in addition to the quaternary ammonium compound leads to a number ox advantages including improved performance on cotton in the presence of anionic surfactants, which can be carried~over from the wash step in a fabric laundering process, Despite these advantages on cotton fabric softening compositions known in the art generally suffer from the disadvantage that they do not perform particularly~well in the softening of fabrics which contain a substantial amount of wool.
This invention relates to a fabric softening composition and a process for the preparation thereof. In particular it relates to a fabric softening composition, which comprises an amphoteric material as active ingredient and which is intended for addition to the rinse or drying step of a fabric laundering process, and a process for the preparation thereof.
British Patent Specification No. 1 260 584 (ARMOUR) discIoses a method of softening fabrics by the use of a composition containing a quaternary ammonium compound and a tertiary amine oxide. The use of the amine oxide in addition to the quaternary ammonium compound leads to a number ox advantages including improved performance on cotton in the presence of anionic surfactants, which can be carried~over from the wash step in a fabric laundering process, Despite these advantages on cotton fabric softening compositions known in the art generally suffer from the disadvantage that they do not perform particularly~well in the softening of fabrics which contain a substantial amount of wool.
British Patent Specification GB 2 083 353 discloses certain detergent compositions for through the wish so~teniny which optionally comprise ionic cellulose ethers.
It is an object of the present invention to provide a fabric softening composition which i5 especially suitable for the softening ox wool in the rinse or trying step of a fabric laundering process It has been found that the softening performance on wool can markedly be improved, when specific cellulose ether compounds are used in combinakion with an amine oxide material. It has also been found that the combination of these specific cellulose ethers with other amphoteric materials provides similar softening benefits to wool. Fabric conditioning compositions according to the present invention preferably have a pH of bstween 1.5 and 6.0 at a concentration of 1 g/l of amphoteric softening material in water at 25C.
The specific cellulose sthers useful in compositions of the present invention are low gel point cellulose ethers having an HLB value of between 3.1 and 4.3, a gel point of less than 58C and are substituted with C1 3 alkyl andlor hydroxyalkyl groups.
Accordingly the present invention relates to a fabric softening composition comprising:
(i) an amphoteric fabric softening material;
(ii) a nonionic cellulose ether havinq a gel point of less than 58~C, an HUB of between 3.1 and 4.3, said cellulose other being substituted with C1 3 alkyl and/or hydroxyalkyl groups;
said composition preferably having a pi of between 1.5 and 6.0 at a concentration of 1 g/l of amphoteric softening material in water at 25C. Preferably compositions of the invention are liquids comprising an aqueous base.
The amphoteric fabric softening material for use in a composition according to the invention is preferably a fabric substantive amphoteric material. Suitable amphoteric materials form a particulate dispersion at a concentration of less than 1 g/l at at least one temperature between 0 and 100C. Preferably at at least one temperature between 10 and 90C, more preferred between 20 and 80C. For the purpose of this invention a fabric substantive amphoteric material is preferably an amphoteric or zwitterionic tertiary or quaternary ammonium compound having either one single long hydrocarbyl side chain or two long hydrocarbyl chains. From these compounds the use of amphoteric or zwitterionic ammonium compounds having two long hydrocarbyl chains is particularly preferred for many reasons including costs, ease of processing and better stability and performance.
When a jingle long chain material is used this single long hydrocarbyl chain contains preferably from 8-50 C-atoms, more preferred prom 12-40 C-atoms, particularly preferred from 12 to 30 C-atoms.
Preferably amphoteric or zwitterionic ammonium compounds for use in compositions according to the present invention have two long hydrocarbyl chains, each chain having 8-24 C-atoms, preferably 10-20 C-atom~, most preferxed around 16 C-atoms.
`: :
- - C718~
In this specification the expression hydrocarbyl chain refers to linear or branch0d alkyl or alkenyl chains optionally substituted or interrupted by functional groups such as -OH, -Ox, -CONH-, -COO-, etc.
Suitable amphoteric fabric substantive materials for use in a fabric treatment compositions according to the invention are for instance:
I) Ampholytes of the following formula:
Rl " ,N-R4X
~2 : II) Hydrocarbyl betaines of the following formula:
: R - N-R4X
R
:~: III) Hydrocarbylamido ~etaines of the following formula:
R
Rl-CONH.R4-N-R5X
: R3 IV) Gly inates or propionates of the following formula:
:`~
2~2~
or ~a3 I
V) tertiary amine oxides of the following formula I
wherein:
a) l and R2 are C8_25 hydrocarbyl chains, ~3 is an hydrocarbylgroup containing 1-4 carbon atoms or a group -(CH2CH20)nH~ R~ R5~ R6 are -(CH2)-which can be interrupted with -O-, -CONH-, -COO-I: etc, n is an integer from I-6, X, Y are So3 , so~2 or COO-; or b) R1 is a C8_50 hydrocarbyl chain, R~, R3 are hydrocarbyl groups containing 1-4 carbon atoms group (C~2CH20)nH~ R4, R5, R6 are -(CH2) -which can ba interrupted by -O-, -COHN-, -COO-etc, n is an integer from 1-6, X, y are so3 S042 or Coo-.
Preferably the amphoteric fabric substantive materials are water insoluble and haze a solubility in water at pH 2.5 at 20C of less than 10 y/l.
The HLB of the amphoteric fabric substantive material is preferably less than 10Ø
Examples of amphoteric materials of the above groups are the following:
Group i (1) R1 and R2 being tallow, R4 being -(CH2)2-, X being -COO-~2) R1 and R2 being hardened tallow, R3 being(CH2)2, X being -COo-(3) Rl and R2 being coco, R4 being -(CH2~3-, X
; being S03-(4) R1 and R2 being stearyl, R4 being -(CH2)3-X being S042 (5) Rl being C26 alkyl, R2 being ethyl, R4 being -(CH2)2-~ X being -COO-~6) R1, being C26 alkyl, R2 being methyl, R4 being -(CH2)3_, X being S03-Group ii (7) R1 and R2 being tallow, R3 being methyl, R4being -(CH2)2-, X being -COO-(8) R1 being C30 alkyl, R2, R3 being methyl, R4bein~ -(CH2)2, X being -COO-Group iii (9) Rl and R2 being tallow, R4 5 being -(CH~)2_, R3 being methyl, X being -COO-(10) R1 and R2 being coco, R4 5 being -(CH2)2 , : R3 being methyl, X being S03-(11) R1 being C26 alkyl, R2 3 bring methyl, R4 5 being -(CH2)2-, X being -COO-Group iv (12) R1 and R2 being hardened tallow, R5 being -(CH2)2-, X being S042-(13) Rl being C26 alkyl, R3 baing methyl, R5 6 being -~CH2)2_, X, Y being S03-Group v (14) Rl and R2 being hardened tallow, R3 beingmethyl (15) R1 and R2 being tallow, R3 being methyl ) R1 and R2 being stearyl, R3 being methyl (17) R1 and R2 being coco, R3 being methyl (1~3 R1 and R2 being CH3 (CEI2) 14 COO-, R3 being ethyl (19) Rl and R3 being CH3 (CH2) 12 COQ(CH23 2-~ R;~
being methyl (20) R1 being C26 alkyl, R3 being (CH2CH2O) 2H~
R2 being methyl : (21) l being C24 alkyl, R2 3 being methyl.
From the above listed materials, particularly the group V materials are preferred, especially those amine oxides containing two hydrocarbyl groups with at least 14C-atoms.
2~2~
The level of amphoteric fabric conditioning material in the composition is preferably at least 1% by weight of the composition, especially preferred prom 1-75% by weight, generally from 2-25% by weight/ especially preferred from 3-15% by weight ox the composition.
The cellulose ethers useful in the present invention are nonionic cellulose ethers, of which some or all of tha three hydroxyl sites per anhydroglucose rings of the polymer have been substituted with a nonionic substituent group.
Preferably the substituent groups are selected from the C2-C3 alkyl and C2-C3 mono- or polyhydric hydroxy alkyl groups, or combinations thereof. Especially the use of ~lkyl hydroxyalkyl cellulose ethers is preferred. Most preferred is the use of ethyl hydroxyethyl substituted cellulose ethers. The choice and percentage of substituent groups has a direct influence on the HUB value of the cellulose ether. A suitable method for determining the HLB value of cellulose ethers is the method as described or mulsifiers by J T Davies, 2nd Int Congress of Surface Activity 1957, I pp 426-439~ This method has been adopted to derive a relative HLB ranking for celIulose ethers by summation of Davies's HLB assignments for substituent groups at the three available hydroxyl sites on the anhydroglucose ring ox the polymer The ~LB
assignments for the substituents groups include the following:
Residual ~ydroxyl 1.9 Methyl 0.825 Ethyl 0.350 Hydroxy ethyl 1.63 Hydroxy propyl 1.15 2~2~
- g - C7188 Hydroxy butyl 0.67 : The cellulose ethers useful herein are polymers. The gel point of polymers can be measured in a number of ways.
In the present context the gel point is measured on a polymer solution prepared at 10 g/l concentration in deionised water by heating 50 ml solution placed in a beakex, with stirring, at a heating rat of approximately 5Clminute. The temperature at which the solution clouds is the gel point of the ellulose ether being tested and is measured using a Sybron/Brinkmann colorimeter at 80 transmission/450 nm.
: Provided that the HUB and gel point of the polymer fall within the required ranges, th2 degree of substitution (DS~ ox the anhydroglucose ring may be any value up to the theoretical maximum value ox 3, but is preferably from about 1.7-2.9, there being a maximum ox 3 hydroxyl groups on each anhydroglucose unit in cellulose.
The expression 'molar substitution' EMS) is sometimes also used in connection with these polymers and refers the number of hydroxylakyl substi~uents per anhydroglucose ; ring and may be more than 3 when the substituents themselvP~ carry further substituents.
The most highly preferred polymers have an average : number of anhydroglucose units in the cellulose polymer, or weight average degree of polymeriæation, from about 50 to about 1,200, For certain product worms, e.g. liquids, it may be desirable to include polymers of relatively low degree of polymeri ation to obtain a satisfactory product viscosity.
A number of cellulose ethers suitable for use in the present invention are commercially available, as follows:
DS /MS
Trade Name Gel C HLE~ alkyl/
Point (Davies hy~droxyalkyl BERMOCOLL CST035 35 3.40 ) 1.4 ethyl (ex Berol Nobel) ) 0.5 hydroxyethyl DVT 8~ 004 37 3 .11 ) 1. 5 ethyl (ex Berol Nobel) ) 1. O hydroxyethyl TYLOSE MHB 1000 54 3.52 ) 2.o methyl teX Hoechst) ) 0.1 hydroxyethyl A number of other cellulose ethers are known from the prior art, but have been found to be unsuitable for use in the present invention. Thus, British Specification No.
GB 2 038 353B (COLGATE-l?AI~qOLIVE) discloses TYLOSE MH 300 (ex Hoechst) which has a gel point of 58C and METHOCEL XD
8861 (ex Dow Chemical company, now coded METHOCEL HB12M) which çontains about O.l hydroxybutyl substituents per anhydroglucose ring, while Japanese Patent Specification No. 59-6293 (LION KX) discloses K~UCEL H (ex Hercules Chemical Corp) which has an ~LB of about 4.4, METHO OE L K4M
(ex Dow Chemical Company) which has a gel point of about 69C, and NA~ROSOL 250H (ex Hercules Chemical Corp) which has an HLB of about 6.9.
The amount of cellulose ether to be employed in compositions according to the invention is preferably from 0.05 to I%, morn preferably from 0.5 to 3% by weight ox the composition.
The ratio of amphoteric softening material to nonionic cellulose ether is preferably from 50:1 to 1:10 2 O ~?J
by weight, more preferably 20:1 to 1:5 most preferably 10:1 to 1:5.
Preferred cellulose ethers for use in compositions of the present invention have an HLB of between 3.3. and 3.8 and a gel point of between 30 and 55C. Especially preferred is the use of Bermocoll CST03~.
Compositions of the present invention have a pH of between 1.5 and 6.0 when adjusted to an amphoteric softener level of 1 g/l in water of 25Ct morn preferred between 2.3 and 5Ø Compositions having a pH value above 6.0 ox below 1.5 are less suitable for use in the rinse or drying step of a fabric washing process.
Fabric conditioning compositions according to the present invention may in addition to the amphoteric aoftener material and the cellulose ether also comprise other fabric softener materials such as nonionic or cationic fabric softening materials. In this respect the use of~cationic fabric softening materials is preferred, these materials tend to promote the degree of deposition of the amphoteric materials and the cellulose ether materials, therwith increasing the softening performance of the composition.
Preferably the cationic fabric softener material for optional use in a composition according to the present invention is a cationic material which is water-insoluble in that the material has a solubility in water at pH 2.5 and ~0C of less than 10 g/l. Highly preferred materials are cationic quaternary ammonium salts having two C12-24 hydrocarbyl chains.
:~
~2~
- 12 - C71~8 Well-known species of substantially water-insoluble quaternary ammonium compounds have the formula Rl \\ /R3 +
N X
wherein Rl and R2 represent hydrocarbyl groups from about .
12 to about 24 carbon atoms; R3 and R4 represent hydrocarbyl groups containing from 1 to about 4 carbon atoms; and X is an anion, preferably selected from halide, methyl sulfate and ethyl sulfate radicals.
Representative examples of these quaternary softeners include ditallow dimethyl ammonium chloride; ditallow dimethyl ammonium methyl sulfate; dihexadecyl dimethyl ammonium chloride; dithydrogenated *allow) dimethyl ammonium methyl sulfate; dihexadecyl diethyl ammonium chloride; di(~oconut) dimethyl ammonium chloride.
Ditallow dimethyl ammonium chloride, di(hydrogenated tallow) dimethyl ammonium chloride, di(coconut) dimethyl ammonium chloride and di(coconut) dimethyl ammonium methosuldate are preferred.
Suitable materials also include dialkyl ekhoxyl methyl ammonium methosulphate based on soft fatty acid, dialkyl ethoxyl methyl ammonium methosulphate based on hard fatty acid, and a material in which R3 and R4 represent methyl, Rl is C13 15~ R2 is CH2C~20COR, where R
is stearyl , and X i methosulphate. Ditallow dimethyl ammonium chloride, di(hydrogenated tallow alkyl) dimethyl ammonium chloride, di(coconut alkyl) dimethyl ammonium chloride and di(coconut alkyl) dimethyl ammonium methosulfate are preferred.
Other preferred cationic compounds include those materials as disclosed in EP 239, 910 (PUG), which is included herein by reference.
Other preferred materials are the materials ox formula Il R - C - o - CH -CH CH2-CH2-OH
\ +/
N
11 / \ CH3SO4 : R5 being tallow, which is available from Stepan under the tradename Stepantex VRH go and /
where ~8~ Rg and Rlo are each alkyl or hydroxyalkyl groups containing from 1 to 4 carbon atoms, or a benzyl group.
R6 and R7 are each an alkyl or alkenyl chain containing from 11 to 23 carbon atoms, and X is a water soluble 2~2~8 anion. These materials and their method of preparation are described in US 4 137 180 (LEVER BROTHERS).
Another class of preferred water-insoluble cationic material6 are the hydrocarbylimidazolinium salts believed to have the formula:
CH2~ CH2 O
N +N - C2H4 j - C R11 A-C \ R12 wherPin R13 is a hydrocarbyl group containing from 1 to 4, preferably 1 or 2 carbon atoms, R11 is a hydrocarbyl group containing from 8 to 25 carbon atoms, R14 is an hydrocarbyl group containing prom 8 to 25 carbon atoms and R12 is hydrogen or an hydrocarbyl containing from 1 to 4 carbon~atoms and A- is an anion, preferably a halide, methosulfate or ethosulfate.
Preferred imidazolinium salts include 1-methyl-1-~(tallowylamido-) ethyl -2-tallowyl- 4,5-dihydro ::: imidazolinium methosulfate and 1-methyl-1-tpalmitoylamido) ethyl ~2-octadecyl-4,5- dihydro-imidazolinium chloride. Other useful imidazolinium : :materials are s-heptadecyl-1-methyl-1- (2-stearylamido) -ethyl-i~idazolinium chloride and 2-lauryl-1-hydroxyethyl-l-oleyl-imidazolinium chloride. Also ;':
:
2~2~
suitable herein are the imidazolinium fabric softening components of US patent No. 4 127 489, incorporated by rPference.
Representative commPrcially available materials of the above classes axe the quaternary ammonium compounds : ~rquad 2HT (ex AKZO); Noramium M2SH (ex CEKA); Aliquat-2HT
(Trade Mark of General Mills Inc), Stepantex Q185 (ex Stepan); Stepantex VP85 (ex Stepan); Stepantex VRH90 (ex Stepan); Synprolam FS (ex ICI) and the imidazolinium compounds Varisoft 475 (Trade Mark of Sherex Company, Columbus Ohio) and Rewoquat W7500 (Trade Mark of REWO).
The compositions according to the invention may also possibly in addition to the cationic fabric softening agents, one or more amines.
The term "amine'7 as used herein can refer to I`
(i) amines of formula . R15 I
R16 1 (I) n R15, R16 and R17 are defined as below;
(ii) amines of formula I`:
:
I`
:
2~2~a8 - 16 - C71~8 r R19 N r (CH2)n N - - R
(II) R18, R20 and R21, m and n are defined as below.
(iii~imidazolines ox formula N N C2H4--N--C Rll I,: I
Rll, R}2 and R14 are defined as above ':
(iv) condensation products formed from the reaction of fatty acids with a polyamine selected from the group consisting of hydroxy alkylalkylenediamines and dialkylenetriamines and mixtures thereof. Suitable materials are disclosed in European Patent Application 199 382 (Procter and Gamble), incorporated herein by reference.
: When the amine is of the formula I above, R15 is a O
;` to C hydro5ar~yl yroup, R16 is a C1 C24 Y
group and R17 is a C1 to C10 hydrocarbyl group. Suitable ' amines include those materials from which the quaternary ammonium compounds disclosed above are derived, in whi.ch 15y us R1' R1S is R2 and R17 is R3- Preferably, the amine is such that both R15 and R16 are C6-C20 alkyl with C16-C18 being most preferred and with R17 as C1 3 alkyl, or R15 is an alkyl or alkenyl group with at least 22 carbon atoms and R16 and R12 are Cl 3 alkyl. Preferably these amines are protonated with hydrochloric acid, orthophosphoric acid (OPA), C1 5 carboxylic acids or any other similar acids, for use in the fabric conditioning compositions of the invention.
When the amine is of formula II above, R18 is a C6 to C24 hydrocarbyl group, R19 is an alkoxylated group of formula (CH2CH20)Y, where y is within the range from O to 6, R20 is an alkoxylated group of formula -(CH2CH20)zH
where z is within the range from O to 6 and m is an integer within the range from O to 6, and is preferably 3.
When m is 0, it is preferred that R18 is a C16 to C22 alkyl and that the sum total of z and y is within the range from I to 6, more preferably 1 to 3. When m is 1, it is preferred that R18 is a C16 to C22 a y the sum total of x and y and z is within the range from 3 to 10.
Representative commercially available materials of this class include Ethomeen (ex Armour) and Ethoduomeen (ex Armour).
Preferably the amines of type (ii) or lit are also protonated or use in the fabric conditioning compositions of the invention.
When the amine is of type (iv) given above, a particularly preferred material is / N R23 N \
O / \ O
11/' \11 R2~ C--R 4 where R22 and R23 are divalent alkenyl chains having from 1 to 3 carbons atoms, and R24 is an acyclic aliphatic hydrocarbon chain having from 15 to 21 carbon atoms. A
commercially available material of this class is Ceranine HC39 Rex Sandoæ).
Especially preferred is a composition comprising in addition to the amphoteric softener material and the cellulose ether both a cationic fabric softening material and an amine. Such compositions preferably comprise an aqueous base and:
from 1 to 15% by weight of the amphoteric softening material;
from 1 to 15% by weight of cationic softening material; and from 1 to 15% by weight of an amine.
Compositions of the invention may take a variety of forms such as pastes, liquids, tablets, granules eventually attached to carrier substrates like tumble dryer sheets, preferably compositions ox the invention are liquids, comprising an aqueous base.
2~2~
Composition6 according to the present invention may be prepared by any well-known for the prepara$ion of fabric conditioning compositions. One suitable method for instance involves the premelting of thy active materials followed by the dispersing of the pre-melt in the aqueous base or vice versa. An especially useful method for the preparation of a fabric conditioning composition according to the present invention involves the pre-addition of the cellulose ether material to the aqueous phase, followed by the addition of the amphoteric fabric softening material to the aqueous phase. This final addition process may for instance involve the dispersing of a premelt including the amphoteric material plus eventual other active materials into the aqueous phase.
In use the fabric conditioning compositions according to the present invention will preferably be diluted with water to form an aqueous liquor preferably comprising from 10 to 1000 ppm active material, the liquor will be contacted with fabrics, preferably in the rinse stage of a fabric washing process.
The invention will be further illustrated by means of the following examples.
Example I
fabric softening composition of the following composition:
05% Arquad 2HT (di hardened tallow di methyl ammonium chloride) .25% Lilaminox M44 ~dihardened tallow methyl amine oxide ex Berol Nobel - 20 - C71~8 1.25% Ceranine HC39 was prepared by co-melting the active ingredients and adding the co-melt to demineralised water at 80C. The cellulose ether (Bermocoll CST 035) was added to this formulation at 75C. The pH of the composition was adjusted with orthophosphoric acid to a value of 3.15.
The performance of the composition was tested by rinsing 40g of pieces of woollen cloth in 1 litre of Wirral water (I0 deg FH) whereto 2 Al ox the composition was added, plus 0.01 g alkyl benzene sulphonate, and subsequently line drying the cloths. The dried woollen cloths were assessed for softness by a trained panel of four members. A piece of woollen cloth treated with the same composition was used as the control, a positive I` softening score indicates a better softness. The following xesults were obtained.
% Polymer in product softening score :~ o.o o.o 0 25 + 0.51 0 50 + 1.95 These results show an increase in softness on wool when adding a cellulose ether product as presently claimed to the fabric softener composition.
; Example II
he fabric softening compositions of example I were tested in a front loading washinq machine. The machine was loaded with 2.5 kg of towelli~g and polyester cotton cloth plus 10 monitors of woollen cloths, which were I: .
2~7,~8 - 2~ - ~71~8 washed in with 100 g NS Persil Auto (UK) at 50C in Wirral water (10 FH) and subsequently rinsed. 100 ml of the softening composition was added to the final rinse. The woollen cloths were line dried and assessed for softness as in example I; the hollowing results were obtained:
% polymer in product softening score 0 0.00 0.25 0.37 0.50 1.10 These results confirm that the use of selected cellulose ethers according to the invention improves the softening performance on wool.
EXAMPLE III
The followiny compositions were prepared by co-melting the amine oxide and the coactive, and adding a mixture of water and the cellulose ether at 80C to the co-melt under agitation, followed by cooling and adjusting the pH to 3.0 with orthophosphoric acid.
I:`
.
COMPOSITION
INGREDIENTS (% wt) A B C D
________ ____________________________________._________ Amine oxide *) 5.0 5.0 5,0 5.0 coactive **) 0.5 0.5 0.5 0.5 Bermocoll CST 035 -- 0.1 0.25 0.5 *) dihardened tallow methyl amine oxide **) a 3:7 mixture of TWEEN 20 and SPAN 20 (ex Atlas Chemical Industries) The softness scores were determined as in example I, the following results were obtained:
COMPOSITION SOFTENING SCORE
________ _____ ________________________________________ A 0.0 B 1.08 C 1.13 D 1.52 Again a good softening performance on wool was found in the presence of the specific cellulose ether.
.
`~
'I
It is an object of the present invention to provide a fabric softening composition which i5 especially suitable for the softening ox wool in the rinse or trying step of a fabric laundering process It has been found that the softening performance on wool can markedly be improved, when specific cellulose ether compounds are used in combinakion with an amine oxide material. It has also been found that the combination of these specific cellulose ethers with other amphoteric materials provides similar softening benefits to wool. Fabric conditioning compositions according to the present invention preferably have a pH of bstween 1.5 and 6.0 at a concentration of 1 g/l of amphoteric softening material in water at 25C.
The specific cellulose sthers useful in compositions of the present invention are low gel point cellulose ethers having an HLB value of between 3.1 and 4.3, a gel point of less than 58C and are substituted with C1 3 alkyl andlor hydroxyalkyl groups.
Accordingly the present invention relates to a fabric softening composition comprising:
(i) an amphoteric fabric softening material;
(ii) a nonionic cellulose ether havinq a gel point of less than 58~C, an HUB of between 3.1 and 4.3, said cellulose other being substituted with C1 3 alkyl and/or hydroxyalkyl groups;
said composition preferably having a pi of between 1.5 and 6.0 at a concentration of 1 g/l of amphoteric softening material in water at 25C. Preferably compositions of the invention are liquids comprising an aqueous base.
The amphoteric fabric softening material for use in a composition according to the invention is preferably a fabric substantive amphoteric material. Suitable amphoteric materials form a particulate dispersion at a concentration of less than 1 g/l at at least one temperature between 0 and 100C. Preferably at at least one temperature between 10 and 90C, more preferred between 20 and 80C. For the purpose of this invention a fabric substantive amphoteric material is preferably an amphoteric or zwitterionic tertiary or quaternary ammonium compound having either one single long hydrocarbyl side chain or two long hydrocarbyl chains. From these compounds the use of amphoteric or zwitterionic ammonium compounds having two long hydrocarbyl chains is particularly preferred for many reasons including costs, ease of processing and better stability and performance.
When a jingle long chain material is used this single long hydrocarbyl chain contains preferably from 8-50 C-atoms, more preferred prom 12-40 C-atoms, particularly preferred from 12 to 30 C-atoms.
Preferably amphoteric or zwitterionic ammonium compounds for use in compositions according to the present invention have two long hydrocarbyl chains, each chain having 8-24 C-atoms, preferably 10-20 C-atom~, most preferxed around 16 C-atoms.
`: :
- - C718~
In this specification the expression hydrocarbyl chain refers to linear or branch0d alkyl or alkenyl chains optionally substituted or interrupted by functional groups such as -OH, -Ox, -CONH-, -COO-, etc.
Suitable amphoteric fabric substantive materials for use in a fabric treatment compositions according to the invention are for instance:
I) Ampholytes of the following formula:
Rl " ,N-R4X
~2 : II) Hydrocarbyl betaines of the following formula:
: R - N-R4X
R
:~: III) Hydrocarbylamido ~etaines of the following formula:
R
Rl-CONH.R4-N-R5X
: R3 IV) Gly inates or propionates of the following formula:
:`~
2~2~
or ~a3 I
V) tertiary amine oxides of the following formula I
wherein:
a) l and R2 are C8_25 hydrocarbyl chains, ~3 is an hydrocarbylgroup containing 1-4 carbon atoms or a group -(CH2CH20)nH~ R~ R5~ R6 are -(CH2)-which can be interrupted with -O-, -CONH-, -COO-I: etc, n is an integer from I-6, X, Y are So3 , so~2 or COO-; or b) R1 is a C8_50 hydrocarbyl chain, R~, R3 are hydrocarbyl groups containing 1-4 carbon atoms group (C~2CH20)nH~ R4, R5, R6 are -(CH2) -which can ba interrupted by -O-, -COHN-, -COO-etc, n is an integer from 1-6, X, y are so3 S042 or Coo-.
Preferably the amphoteric fabric substantive materials are water insoluble and haze a solubility in water at pH 2.5 at 20C of less than 10 y/l.
The HLB of the amphoteric fabric substantive material is preferably less than 10Ø
Examples of amphoteric materials of the above groups are the following:
Group i (1) R1 and R2 being tallow, R4 being -(CH2)2-, X being -COO-~2) R1 and R2 being hardened tallow, R3 being(CH2)2, X being -COo-(3) Rl and R2 being coco, R4 being -(CH2~3-, X
; being S03-(4) R1 and R2 being stearyl, R4 being -(CH2)3-X being S042 (5) Rl being C26 alkyl, R2 being ethyl, R4 being -(CH2)2-~ X being -COO-~6) R1, being C26 alkyl, R2 being methyl, R4 being -(CH2)3_, X being S03-Group ii (7) R1 and R2 being tallow, R3 being methyl, R4being -(CH2)2-, X being -COO-(8) R1 being C30 alkyl, R2, R3 being methyl, R4bein~ -(CH2)2, X being -COO-Group iii (9) Rl and R2 being tallow, R4 5 being -(CH~)2_, R3 being methyl, X being -COO-(10) R1 and R2 being coco, R4 5 being -(CH2)2 , : R3 being methyl, X being S03-(11) R1 being C26 alkyl, R2 3 bring methyl, R4 5 being -(CH2)2-, X being -COO-Group iv (12) R1 and R2 being hardened tallow, R5 being -(CH2)2-, X being S042-(13) Rl being C26 alkyl, R3 baing methyl, R5 6 being -~CH2)2_, X, Y being S03-Group v (14) Rl and R2 being hardened tallow, R3 beingmethyl (15) R1 and R2 being tallow, R3 being methyl ) R1 and R2 being stearyl, R3 being methyl (17) R1 and R2 being coco, R3 being methyl (1~3 R1 and R2 being CH3 (CEI2) 14 COO-, R3 being ethyl (19) Rl and R3 being CH3 (CH2) 12 COQ(CH23 2-~ R;~
being methyl (20) R1 being C26 alkyl, R3 being (CH2CH2O) 2H~
R2 being methyl : (21) l being C24 alkyl, R2 3 being methyl.
From the above listed materials, particularly the group V materials are preferred, especially those amine oxides containing two hydrocarbyl groups with at least 14C-atoms.
2~2~
The level of amphoteric fabric conditioning material in the composition is preferably at least 1% by weight of the composition, especially preferred prom 1-75% by weight, generally from 2-25% by weight/ especially preferred from 3-15% by weight ox the composition.
The cellulose ethers useful in the present invention are nonionic cellulose ethers, of which some or all of tha three hydroxyl sites per anhydroglucose rings of the polymer have been substituted with a nonionic substituent group.
Preferably the substituent groups are selected from the C2-C3 alkyl and C2-C3 mono- or polyhydric hydroxy alkyl groups, or combinations thereof. Especially the use of ~lkyl hydroxyalkyl cellulose ethers is preferred. Most preferred is the use of ethyl hydroxyethyl substituted cellulose ethers. The choice and percentage of substituent groups has a direct influence on the HUB value of the cellulose ether. A suitable method for determining the HLB value of cellulose ethers is the method as described or mulsifiers by J T Davies, 2nd Int Congress of Surface Activity 1957, I pp 426-439~ This method has been adopted to derive a relative HLB ranking for celIulose ethers by summation of Davies's HLB assignments for substituent groups at the three available hydroxyl sites on the anhydroglucose ring ox the polymer The ~LB
assignments for the substituents groups include the following:
Residual ~ydroxyl 1.9 Methyl 0.825 Ethyl 0.350 Hydroxy ethyl 1.63 Hydroxy propyl 1.15 2~2~
- g - C7188 Hydroxy butyl 0.67 : The cellulose ethers useful herein are polymers. The gel point of polymers can be measured in a number of ways.
In the present context the gel point is measured on a polymer solution prepared at 10 g/l concentration in deionised water by heating 50 ml solution placed in a beakex, with stirring, at a heating rat of approximately 5Clminute. The temperature at which the solution clouds is the gel point of the ellulose ether being tested and is measured using a Sybron/Brinkmann colorimeter at 80 transmission/450 nm.
: Provided that the HUB and gel point of the polymer fall within the required ranges, th2 degree of substitution (DS~ ox the anhydroglucose ring may be any value up to the theoretical maximum value ox 3, but is preferably from about 1.7-2.9, there being a maximum ox 3 hydroxyl groups on each anhydroglucose unit in cellulose.
The expression 'molar substitution' EMS) is sometimes also used in connection with these polymers and refers the number of hydroxylakyl substi~uents per anhydroglucose ; ring and may be more than 3 when the substituents themselvP~ carry further substituents.
The most highly preferred polymers have an average : number of anhydroglucose units in the cellulose polymer, or weight average degree of polymeriæation, from about 50 to about 1,200, For certain product worms, e.g. liquids, it may be desirable to include polymers of relatively low degree of polymeri ation to obtain a satisfactory product viscosity.
A number of cellulose ethers suitable for use in the present invention are commercially available, as follows:
DS /MS
Trade Name Gel C HLE~ alkyl/
Point (Davies hy~droxyalkyl BERMOCOLL CST035 35 3.40 ) 1.4 ethyl (ex Berol Nobel) ) 0.5 hydroxyethyl DVT 8~ 004 37 3 .11 ) 1. 5 ethyl (ex Berol Nobel) ) 1. O hydroxyethyl TYLOSE MHB 1000 54 3.52 ) 2.o methyl teX Hoechst) ) 0.1 hydroxyethyl A number of other cellulose ethers are known from the prior art, but have been found to be unsuitable for use in the present invention. Thus, British Specification No.
GB 2 038 353B (COLGATE-l?AI~qOLIVE) discloses TYLOSE MH 300 (ex Hoechst) which has a gel point of 58C and METHOCEL XD
8861 (ex Dow Chemical company, now coded METHOCEL HB12M) which çontains about O.l hydroxybutyl substituents per anhydroglucose ring, while Japanese Patent Specification No. 59-6293 (LION KX) discloses K~UCEL H (ex Hercules Chemical Corp) which has an ~LB of about 4.4, METHO OE L K4M
(ex Dow Chemical Company) which has a gel point of about 69C, and NA~ROSOL 250H (ex Hercules Chemical Corp) which has an HLB of about 6.9.
The amount of cellulose ether to be employed in compositions according to the invention is preferably from 0.05 to I%, morn preferably from 0.5 to 3% by weight ox the composition.
The ratio of amphoteric softening material to nonionic cellulose ether is preferably from 50:1 to 1:10 2 O ~?J
by weight, more preferably 20:1 to 1:5 most preferably 10:1 to 1:5.
Preferred cellulose ethers for use in compositions of the present invention have an HLB of between 3.3. and 3.8 and a gel point of between 30 and 55C. Especially preferred is the use of Bermocoll CST03~.
Compositions of the present invention have a pH of between 1.5 and 6.0 when adjusted to an amphoteric softener level of 1 g/l in water of 25Ct morn preferred between 2.3 and 5Ø Compositions having a pH value above 6.0 ox below 1.5 are less suitable for use in the rinse or drying step of a fabric washing process.
Fabric conditioning compositions according to the present invention may in addition to the amphoteric aoftener material and the cellulose ether also comprise other fabric softener materials such as nonionic or cationic fabric softening materials. In this respect the use of~cationic fabric softening materials is preferred, these materials tend to promote the degree of deposition of the amphoteric materials and the cellulose ether materials, therwith increasing the softening performance of the composition.
Preferably the cationic fabric softener material for optional use in a composition according to the present invention is a cationic material which is water-insoluble in that the material has a solubility in water at pH 2.5 and ~0C of less than 10 g/l. Highly preferred materials are cationic quaternary ammonium salts having two C12-24 hydrocarbyl chains.
:~
~2~
- 12 - C71~8 Well-known species of substantially water-insoluble quaternary ammonium compounds have the formula Rl \\ /R3 +
N X
wherein Rl and R2 represent hydrocarbyl groups from about .
12 to about 24 carbon atoms; R3 and R4 represent hydrocarbyl groups containing from 1 to about 4 carbon atoms; and X is an anion, preferably selected from halide, methyl sulfate and ethyl sulfate radicals.
Representative examples of these quaternary softeners include ditallow dimethyl ammonium chloride; ditallow dimethyl ammonium methyl sulfate; dihexadecyl dimethyl ammonium chloride; dithydrogenated *allow) dimethyl ammonium methyl sulfate; dihexadecyl diethyl ammonium chloride; di(~oconut) dimethyl ammonium chloride.
Ditallow dimethyl ammonium chloride, di(hydrogenated tallow) dimethyl ammonium chloride, di(coconut) dimethyl ammonium chloride and di(coconut) dimethyl ammonium methosuldate are preferred.
Suitable materials also include dialkyl ekhoxyl methyl ammonium methosulphate based on soft fatty acid, dialkyl ethoxyl methyl ammonium methosulphate based on hard fatty acid, and a material in which R3 and R4 represent methyl, Rl is C13 15~ R2 is CH2C~20COR, where R
is stearyl , and X i methosulphate. Ditallow dimethyl ammonium chloride, di(hydrogenated tallow alkyl) dimethyl ammonium chloride, di(coconut alkyl) dimethyl ammonium chloride and di(coconut alkyl) dimethyl ammonium methosulfate are preferred.
Other preferred cationic compounds include those materials as disclosed in EP 239, 910 (PUG), which is included herein by reference.
Other preferred materials are the materials ox formula Il R - C - o - CH -CH CH2-CH2-OH
\ +/
N
11 / \ CH3SO4 : R5 being tallow, which is available from Stepan under the tradename Stepantex VRH go and /
where ~8~ Rg and Rlo are each alkyl or hydroxyalkyl groups containing from 1 to 4 carbon atoms, or a benzyl group.
R6 and R7 are each an alkyl or alkenyl chain containing from 11 to 23 carbon atoms, and X is a water soluble 2~2~8 anion. These materials and their method of preparation are described in US 4 137 180 (LEVER BROTHERS).
Another class of preferred water-insoluble cationic material6 are the hydrocarbylimidazolinium salts believed to have the formula:
CH2~ CH2 O
N +N - C2H4 j - C R11 A-C \ R12 wherPin R13 is a hydrocarbyl group containing from 1 to 4, preferably 1 or 2 carbon atoms, R11 is a hydrocarbyl group containing from 8 to 25 carbon atoms, R14 is an hydrocarbyl group containing prom 8 to 25 carbon atoms and R12 is hydrogen or an hydrocarbyl containing from 1 to 4 carbon~atoms and A- is an anion, preferably a halide, methosulfate or ethosulfate.
Preferred imidazolinium salts include 1-methyl-1-~(tallowylamido-) ethyl -2-tallowyl- 4,5-dihydro ::: imidazolinium methosulfate and 1-methyl-1-tpalmitoylamido) ethyl ~2-octadecyl-4,5- dihydro-imidazolinium chloride. Other useful imidazolinium : :materials are s-heptadecyl-1-methyl-1- (2-stearylamido) -ethyl-i~idazolinium chloride and 2-lauryl-1-hydroxyethyl-l-oleyl-imidazolinium chloride. Also ;':
:
2~2~
suitable herein are the imidazolinium fabric softening components of US patent No. 4 127 489, incorporated by rPference.
Representative commPrcially available materials of the above classes axe the quaternary ammonium compounds : ~rquad 2HT (ex AKZO); Noramium M2SH (ex CEKA); Aliquat-2HT
(Trade Mark of General Mills Inc), Stepantex Q185 (ex Stepan); Stepantex VP85 (ex Stepan); Stepantex VRH90 (ex Stepan); Synprolam FS (ex ICI) and the imidazolinium compounds Varisoft 475 (Trade Mark of Sherex Company, Columbus Ohio) and Rewoquat W7500 (Trade Mark of REWO).
The compositions according to the invention may also possibly in addition to the cationic fabric softening agents, one or more amines.
The term "amine'7 as used herein can refer to I`
(i) amines of formula . R15 I
R16 1 (I) n R15, R16 and R17 are defined as below;
(ii) amines of formula I`:
:
I`
:
2~2~a8 - 16 - C71~8 r R19 N r (CH2)n N - - R
(II) R18, R20 and R21, m and n are defined as below.
(iii~imidazolines ox formula N N C2H4--N--C Rll I,: I
Rll, R}2 and R14 are defined as above ':
(iv) condensation products formed from the reaction of fatty acids with a polyamine selected from the group consisting of hydroxy alkylalkylenediamines and dialkylenetriamines and mixtures thereof. Suitable materials are disclosed in European Patent Application 199 382 (Procter and Gamble), incorporated herein by reference.
: When the amine is of the formula I above, R15 is a O
;` to C hydro5ar~yl yroup, R16 is a C1 C24 Y
group and R17 is a C1 to C10 hydrocarbyl group. Suitable ' amines include those materials from which the quaternary ammonium compounds disclosed above are derived, in whi.ch 15y us R1' R1S is R2 and R17 is R3- Preferably, the amine is such that both R15 and R16 are C6-C20 alkyl with C16-C18 being most preferred and with R17 as C1 3 alkyl, or R15 is an alkyl or alkenyl group with at least 22 carbon atoms and R16 and R12 are Cl 3 alkyl. Preferably these amines are protonated with hydrochloric acid, orthophosphoric acid (OPA), C1 5 carboxylic acids or any other similar acids, for use in the fabric conditioning compositions of the invention.
When the amine is of formula II above, R18 is a C6 to C24 hydrocarbyl group, R19 is an alkoxylated group of formula (CH2CH20)Y, where y is within the range from O to 6, R20 is an alkoxylated group of formula -(CH2CH20)zH
where z is within the range from O to 6 and m is an integer within the range from O to 6, and is preferably 3.
When m is 0, it is preferred that R18 is a C16 to C22 alkyl and that the sum total of z and y is within the range from I to 6, more preferably 1 to 3. When m is 1, it is preferred that R18 is a C16 to C22 a y the sum total of x and y and z is within the range from 3 to 10.
Representative commercially available materials of this class include Ethomeen (ex Armour) and Ethoduomeen (ex Armour).
Preferably the amines of type (ii) or lit are also protonated or use in the fabric conditioning compositions of the invention.
When the amine is of type (iv) given above, a particularly preferred material is / N R23 N \
O / \ O
11/' \11 R2~ C--R 4 where R22 and R23 are divalent alkenyl chains having from 1 to 3 carbons atoms, and R24 is an acyclic aliphatic hydrocarbon chain having from 15 to 21 carbon atoms. A
commercially available material of this class is Ceranine HC39 Rex Sandoæ).
Especially preferred is a composition comprising in addition to the amphoteric softener material and the cellulose ether both a cationic fabric softening material and an amine. Such compositions preferably comprise an aqueous base and:
from 1 to 15% by weight of the amphoteric softening material;
from 1 to 15% by weight of cationic softening material; and from 1 to 15% by weight of an amine.
Compositions of the invention may take a variety of forms such as pastes, liquids, tablets, granules eventually attached to carrier substrates like tumble dryer sheets, preferably compositions ox the invention are liquids, comprising an aqueous base.
2~2~
Composition6 according to the present invention may be prepared by any well-known for the prepara$ion of fabric conditioning compositions. One suitable method for instance involves the premelting of thy active materials followed by the dispersing of the pre-melt in the aqueous base or vice versa. An especially useful method for the preparation of a fabric conditioning composition according to the present invention involves the pre-addition of the cellulose ether material to the aqueous phase, followed by the addition of the amphoteric fabric softening material to the aqueous phase. This final addition process may for instance involve the dispersing of a premelt including the amphoteric material plus eventual other active materials into the aqueous phase.
In use the fabric conditioning compositions according to the present invention will preferably be diluted with water to form an aqueous liquor preferably comprising from 10 to 1000 ppm active material, the liquor will be contacted with fabrics, preferably in the rinse stage of a fabric washing process.
The invention will be further illustrated by means of the following examples.
Example I
fabric softening composition of the following composition:
05% Arquad 2HT (di hardened tallow di methyl ammonium chloride) .25% Lilaminox M44 ~dihardened tallow methyl amine oxide ex Berol Nobel - 20 - C71~8 1.25% Ceranine HC39 was prepared by co-melting the active ingredients and adding the co-melt to demineralised water at 80C. The cellulose ether (Bermocoll CST 035) was added to this formulation at 75C. The pH of the composition was adjusted with orthophosphoric acid to a value of 3.15.
The performance of the composition was tested by rinsing 40g of pieces of woollen cloth in 1 litre of Wirral water (I0 deg FH) whereto 2 Al ox the composition was added, plus 0.01 g alkyl benzene sulphonate, and subsequently line drying the cloths. The dried woollen cloths were assessed for softness by a trained panel of four members. A piece of woollen cloth treated with the same composition was used as the control, a positive I` softening score indicates a better softness. The following xesults were obtained.
% Polymer in product softening score :~ o.o o.o 0 25 + 0.51 0 50 + 1.95 These results show an increase in softness on wool when adding a cellulose ether product as presently claimed to the fabric softener composition.
; Example II
he fabric softening compositions of example I were tested in a front loading washinq machine. The machine was loaded with 2.5 kg of towelli~g and polyester cotton cloth plus 10 monitors of woollen cloths, which were I: .
2~7,~8 - 2~ - ~71~8 washed in with 100 g NS Persil Auto (UK) at 50C in Wirral water (10 FH) and subsequently rinsed. 100 ml of the softening composition was added to the final rinse. The woollen cloths were line dried and assessed for softness as in example I; the hollowing results were obtained:
% polymer in product softening score 0 0.00 0.25 0.37 0.50 1.10 These results confirm that the use of selected cellulose ethers according to the invention improves the softening performance on wool.
EXAMPLE III
The followiny compositions were prepared by co-melting the amine oxide and the coactive, and adding a mixture of water and the cellulose ether at 80C to the co-melt under agitation, followed by cooling and adjusting the pH to 3.0 with orthophosphoric acid.
I:`
.
COMPOSITION
INGREDIENTS (% wt) A B C D
________ ____________________________________._________ Amine oxide *) 5.0 5.0 5,0 5.0 coactive **) 0.5 0.5 0.5 0.5 Bermocoll CST 035 -- 0.1 0.25 0.5 *) dihardened tallow methyl amine oxide **) a 3:7 mixture of TWEEN 20 and SPAN 20 (ex Atlas Chemical Industries) The softness scores were determined as in example I, the following results were obtained:
COMPOSITION SOFTENING SCORE
________ _____ ________________________________________ A 0.0 B 1.08 C 1.13 D 1.52 Again a good softening performance on wool was found in the presence of the specific cellulose ether.
.
`~
'I
Claims (11)
1. A fabric softening composition comprising (i) an amphoteric fabric softening material and (ii) a nonionic cellulose ether having a gel point of less than 58°C, an HLB of between 3.1 and 4.3, said cellulose ether being substituted with C1-3 alkyl and/or hydroxyalkyl groups.
2. A fabric softening composition as claimed in claim 1 having a pB of between 1.5 and 6.0 at a concentration of 1 g/l of amphoteric softening material in water at 25°C.
3. A composition as claimed in claim 1 or claim 2 wherein the amphoteric softener contains two hydrocarbyl groups with at least 14 C-atoms.
4. A composition as claimed in any preceding claim wherein the cellulose ether has an HLB of between 3.3 and 3.8.
5. A composition as claimed in any preceding claim wherein the cellulose ether has a gel point of between 30 and 55°C.
6. A composition as claimed in any preceding claim wherein the cellulose ether is substituted with C2-3 hydroxy alkyl groups.
7. A composition as claimed to any preceding claim the cellulose ether is an ethyl hydroxyethyl cellulose ether.
8. A composition as claimed in any preceding claim which also comprises a cationic fabric softening material.
9. A fabric softening composition as claimed in any preceding claim which also comprises an amine fabric softening material.
10. A composition as claimed in any preceding claim comprising an aqueous base.
11. The fabric softening composition as claimed in claim 1 and substantially as described here.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8915848.9 | 1989-07-11 | ||
| GB898915848A GB8915848D0 (en) | 1989-07-11 | 1989-07-11 | Fabric softening composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2020948A1 true CA2020948A1 (en) | 1991-01-12 |
Family
ID=10659856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002020948A Abandoned CA2020948A1 (en) | 1989-07-11 | 1990-07-11 | Fabric softening composition |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0408279B1 (en) |
| JP (1) | JPH0369671A (en) |
| AU (1) | AU637117B2 (en) |
| BR (1) | BR9003307A (en) |
| CA (1) | CA2020948A1 (en) |
| DE (1) | DE69026430T2 (en) |
| ES (1) | ES2085892T3 (en) |
| GB (1) | GB8915848D0 (en) |
| ZA (1) | ZA905428B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10351324A1 (en) * | 2003-02-10 | 2004-08-26 | Henkel Kgaa | Enhancing the cleaning performance of detergents with cellulose derivative and hygroscopic polymer |
| WO2014154234A1 (en) * | 2013-03-25 | 2014-10-02 | Rhodia Operations | Fabric softener |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE415031B (en) * | 1974-05-20 | 1980-09-01 | Modokemi Ab | DETAILS WITH SOFTYING AND / OR ANTISTATIC EFFECT |
| DE2913049A1 (en) * | 1979-03-31 | 1980-10-16 | Henkel Kgaa | LIQUID DETERGENT |
| US4790856A (en) * | 1984-10-17 | 1988-12-13 | Colgate-Palmolive Company | Softening and anti-static nonionic detergent composition with sulfosuccinamate detergent |
| US4661267A (en) * | 1985-10-18 | 1987-04-28 | The Procter & Gamble Company | Fabric softener composition |
| US4876034A (en) * | 1986-11-18 | 1989-10-24 | Kao Corporation | Secondary amidoamino acid based detergent composition |
| ES2018605B3 (en) * | 1987-01-29 | 1991-04-16 | Unilever Plc | FABRIC CONDITIONING COMPOSITION. |
| GB8728958D0 (en) * | 1987-12-11 | 1988-01-27 | Unilever Plc | Fabric softening additive for detergent compositions |
| DE68919236T2 (en) * | 1988-01-28 | 1995-04-06 | Unilever Nv | Textile treatment preparation and its manufacture. |
-
1989
- 1989-07-11 GB GB898915848A patent/GB8915848D0/en active Pending
-
1990
- 1990-07-09 EP EP90307461A patent/EP0408279B1/en not_active Expired - Lifetime
- 1990-07-09 DE DE69026430T patent/DE69026430T2/en not_active Expired - Fee Related
- 1990-07-09 ES ES90307461T patent/ES2085892T3/en not_active Expired - Lifetime
- 1990-07-10 AU AU58824/90A patent/AU637117B2/en not_active Ceased
- 1990-07-10 BR BR909003307A patent/BR9003307A/en not_active IP Right Cessation
- 1990-07-11 JP JP2183855A patent/JPH0369671A/en active Pending
- 1990-07-11 CA CA002020948A patent/CA2020948A1/en not_active Abandoned
- 1990-07-11 ZA ZA905428A patent/ZA905428B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0408279A3 (en) | 1991-10-23 |
| ZA905428B (en) | 1992-03-25 |
| GB8915848D0 (en) | 1989-08-31 |
| AU5882490A (en) | 1991-01-17 |
| DE69026430D1 (en) | 1996-05-15 |
| DE69026430T2 (en) | 1996-08-14 |
| BR9003307A (en) | 1991-08-27 |
| ES2085892T3 (en) | 1996-06-16 |
| EP0408279A2 (en) | 1991-01-16 |
| AU637117B2 (en) | 1993-05-20 |
| JPH0369671A (en) | 1991-03-26 |
| EP0408279B1 (en) | 1996-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4954270A (en) | Fabric softening composition: fabric softener and hydrophobically modified nonionic cellulose ether | |
| USRE34062E (en) | Fabric softening composition contains water-insoluble surfactant and aliphatic mono-carboxylic acid | |
| JP2562843B2 (en) | Fabric softener | |
| CA1313675C (en) | Mono-esters as fiber and fabric treatment compositions | |
| GB1601360A (en) | Textile treatment composition | |
| JPS6335699A (en) | Detergent composition having clothing softening property | |
| JPH0390677A (en) | Composition for softening textile product | |
| EP2007860B1 (en) | Rinse-added fabric treatment composition | |
| EP0276999B1 (en) | Fabric conditioning composition | |
| CA1341483C (en) | Fabric conditioning composition | |
| JPH10504609A (en) | Rinse-added fabric softener composition containing antioxidant for protection against sunlight fading for fabric | |
| EP0392764B1 (en) | Fabric conditioning article | |
| WO2007028495A1 (en) | Fabric conditioning composition | |
| GB1604030A (en) | Textile conditioning compositions | |
| JP2757892B2 (en) | Composition for softening liquid textile products | |
| JP2566177B2 (en) | Textile softening composition and method for producing the same | |
| CA2020948A1 (en) | Fabric softening composition | |
| GB2266100A (en) | Fabric softening compositions | |
| IE860831L (en) | Fabric conditioner | |
| WO2022152548A1 (en) | Fabric conditioner | |
| AU613792B2 (en) | Fabric treatment composition | |
| JP2551479C (en) | ||
| JPH0213065B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |