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
  • 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
• • 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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/0034—Fixed on a solid conventional detergent ingredient
• • 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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
• • 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
  • C11D3/02—Inorganic compounds ; Elemental compounds
  • C11D3/12—Water-insoluble compounds
  • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
• • 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
  • C11D3/50—Perfumes
  • C11D3/502—Protected perfumes
  • C11D3/505—Protected perfumes encapsulated or adsorbed on a carrier, e.g. zeolite or clay

Definitions

• the present invention relates to perfume additives for use in combination with fabric-softening compositions.
• Fabric-softening compositions to be added in the rinse step of a laundry cycle are well known.
• compositions can be defined as the improvement of fabrics aesthetics/feel, after a wash cycle; this is why, in addition to softness, perfume delivery on fabrics from such compositions is an especially important aspect, and continuous efforts are made to improve such perfume delivery, so as to make it not only consumer-noticeable, but also long-lasting.
• EP-A-0 397 245 and EP-A-397 246 have been described perfume particles wherein perfume is dispersed within certain water-insoluble polymeric carrier materials, and the resulting particles are used in fabric cleaning or conditioning compositions. Not all perfume compositions, however, are compatible with said polymeric carrier materials.
• Such a carrier system consists of porous silica onto which a mixture, at specific ratios, of perfume and softening active is adsorbed.
• porous spheroidal silica per se as carrier for a wide range of material including perfumes, has been disclosed in EP-A-294 206, not relating to softening of fabrics nor any combination with softening active.
• the present invention relates to a perfume additive in granular form for use with fabric-softening compositions, containing :
• the present invention also encompasses the use of said additives as single doses during use of fabric softening compositions, or the preparation of ready-to-use fabric softening compositions out of concentrates.
• the porous silica useful herein is a precipitated spheroidal silica, having a particle size not exceeding 500 micrometers.
• the silica herein typically has a pore volume in the range 25 to 75%.
• This silica is further characterized by a BET surface area* superior to 50m2/g (DIN 66131) and a high absorption value.
• the absorption can be expressed as Dibutylphtalate (DBP) number, this DBP number should be above 100g/100g, preferably above 200g/100g (DIN 53601, ASTM D 2414). * measured according to the method developed by Brunauer, Emmet and Teller (BET), J. Amer. Chem. Soc. 60, 309 (1938).
• BET Brunauer, Emmet and Teller
• Porous silica corresponding to the above specifications is available under the trade name Sipernat R from Degussa.
• the additives herein contain from 20% to 70% of porous silica.
• the characterizing feature of the present invention is that perfume is mixed with a softening active before being adsorbed onto the porous silica.
• the ratio of perfume to softening active is from 1:10 to 5:1, preferably 1:5 to 3:1.
• Perfume in the sense of perfume components or compositions of perfume components, can be any odorifirous materials or any materials which act as a malodour counteractent.
• the perfume will most often be liquid at ambient temperatures, but also can be liquified solid such as the various camphoraceous perfumes known in the art.
• the perfume can be relatively simple in composition or can comprise highly sophisticated, compact mixtures of natural or synthetic chemical components, all chosen to provide any desired odour.
• perfumes are those odorous materials that deposit on fabrics during the laundry process and are detectable by people with normal olfactory sensitivity. Many of the perfume ingredients along with their odor character and their physical and chemical properties are given in "Perfume and Flavor chemicals (aroma chemicals)", Stephen Arctender, Vols. I and II, Aurthor, Montclair, H.J. and the Merck Index, 8th Edition, Merck & Co., Inc. Rahway, N.J. Perfume components and compositions can also be found in the art, e.g. US Patent Nos. 4,145,184, 4,152,272, 4,209,417 or 4,515,705.
• perfume use includes materials such as aldehydes, ketones, esters and the like. More commonly, naturally occurring plant and animal oils and exudates comprising complex mixtures of various chemical components are known for use as perfume, and such materials can be used herein.
• Typical perfumes can comprise e.g. woody/earthy bases containing exotic materials such as sandalwood oil, civet and patchouli oil.
• the perfume also can be of a light floral fragrance e.g. rose or violet extract. Further the perfume can be formulated to provide desirable fruity odours e.g. lime, limon or orange.
• perfume components and compositions are anetole, benzaldehyde, benzyl acetate, benzyl alcohol, benzyl formate, iso-bornyl acetate, camphene, cis-citral (neral), citronellal, citronellol, citronellyl acetate, paracymene, decanal, dihydrolinalool, dihydromyrcenol, dimethyl phenyl carbinol, eucalyptol, geranial, geraniol, geranyl acetate, geranyl nitrile, cis-3-hexenyl acetate, hydroxycitronellal, d-limonene, linalool, linalool oxide, linalyl acetate, linalyl propionate, methyl anthranilate, alpha-methyl ionone, methyl nonyl acetaldehyde, methyl phen
• Di-long chain quaternary ammonium compounds are of the formula : wherein R1 and R2 are C1 ⁇ 4 saturated alkyl groups or hydroxyalkyl groups and R3 and R4 are acyclic aliphatic C8 ⁇ 30, preferably C12 ⁇ 23, more preferably C15 ⁇ 22 hydrocarbon groups which may be intempted by ester linkages, and A is an anion.
• Preferred compounds of the formula above for use herein include the well known ditallowdimethyl ammonium chloride (DTDMAC), ditallowdimethyl ammonium methyl sulfate, and di(hydrogetated tallow)dimethyl ammonium chloride.
• DTDMAC ditallowdimethyl ammonium chloride
• ditallowdimethyl ammonium methyl sulfate ditallowdimethyl ammonium methyl sulfate
• di(hydrogetated tallow)dimethyl ammonium chloride di(hydrogetated tallow)dimethyl ammonium chloride
• Examples of such mixtures are the alkyl radicals obtained from coconut oil, "soft” (non-hardened) tallow, and hardened tallow;
• X is wherein T is O or NR5, R5 being H or C1-C4 alkyl, preferably H, and R4 is a divalent C1-C3 alkylene group or (C2H4O) m , wherein m is a number of from 1 to 8; or X is R4.
• imidazoline actives of the formula above are of the following formulae : wherein R1 is a tallow group.
• Compounds of formula Ia are ditallowimidazolines, while compounds of formula Ib are ditallowimidazoline esters.
• Quaternized di-long chain imidazoline compounds are of the formula : or mixtures thereof, wherein R and R1 are, independently, C11-C21 hydrocarbyl groups, preferably tallow, R2 is a C1-C4 hydrocarbyl group, preferably methyl, A is an anion, m is an integer from 2 to 4, preferably 2 and X is wherein T is O or NR5, R5 being H or C1-C4 alkyl, preferably H, and R4 is a divalent C1-C3 alkylene group or (C2H4O) m , wherein m is a number of from 1 to 8; or X is R4.
• T is O and R4 is (CH2)2 (quaternized ditallow imidazoline ester).
• Mono long-chain alkyl amines useful herein include compounds of the formula wherein R1 is a C8 ⁇ 30 acyclic aliphatic , preferably C12 ⁇ 23 hydrocarbon group which may be intempted by ester linkages, R2 and R3 are C1 ⁇ 4 saturated alkyl groups or hydroxyalkyl groups of the formula (CH2CH2O) n H where n is an integer from 1 to 5.
• Mono alkyl quaternary ammonium compounds useful herein include compounds of the formula wherein R1 is an acyclic aliphatic C8 ⁇ 30, preferably C12 ⁇ 23 hydrocarbon group which may be interupted by ester linkages, R2, R3 and R4 are C1 ⁇ 4 saturated alkyl groups or hydroxyalkyl groups; and A is an anion.
• a preferred mono-alkyl ammonium compound for use herein is cetyl trimethylammonium bromide.
• Most preferred softening actives for use in the additives herein are ditallowdimethyl ammonium, ditallowimidazoline ester, quaternized ditallowimidazoline ester, and mixtures thereof.
• the present additives may contain additional ingredients, which can be pre-mixed with the perfume and softening active before they are adsorbed onto the porous silicate, or added, after the adsorption is completed, to the particles.
• Ingredients which can be pre-mixed with the perfume and softening active are selected from the group of
• Preferred ingredients to be pre-mixed are the esters of C8-20 alcohols, in particular glyceryl monostearate.
• the water-soluble coating/agglomerating materials can be selected from the group of polyvinyl alcohol, polyethylene glycol, sugars, polyacrylamides, polysaccharides and similar natural and synthetic polymers.
• Dyes are typically used and can be added to the mix before adsorption onto silica, or sprayed on the formed particles as a last step.
• a co-melt of the softening active and the perfume is typically made, possibly including an optional ingredient such as listed above.
• the co-melt is adsorbed on porous silica, keeping the temperature, needed to keep the co-melt liquid, typically at 50°C; Adsorption can be achieved by adding the co-melt in portions to the pre-heated porous silica under agitation, or by spraying it on pre-heated porous silica in a "Nauta" type mixer.
• the resulting free-flowing powder is cooled to a temperature ranging from 3°C to ambient, and sieved on an appropriate sieve (e.g. Mesh 22); the powder is then agglomerated in an agglomeration unit, such as a Plough Share Lödige, possibly with the addition of a coating/agglomeration material; the agglomerate is cooled and sieved over an appropriate sieve (e.g. Mesh 22).
• an agglomeration unit such as a Plough Share Lödige
• the perfume additives herein can either be used as single-dose additives for fabric softening compositions, during use, or as additives in the preparation of fabric-softening compositions out of concentrates, before use.
• the present additives are used as single-dose additives to unperfumed fabric softening compositions during use; i.e. a dose of additive sufficient for a typical washing machine load is added to unperfumed fabric softening composition, prior to the rinse cycle of the laundry process.
• Such an addition can conveniently be made in the dispenser of automatic washing machines; i.e. before starting the laundry cycle, an amount of fabric softening composition in liquid form is first poured into the dispenser of the washing machine, and the specific dose of perfume additive in granular form is added to said fabric softening composition sitting in the dispenser, and is dispersed therein.
• the resulting mixture is then brought into contact with the fabrics, during the rinse cycle and the perfume is released onto the fabrics.
• perfume additives herein is not limited to liquid fabric softening compositions since their granular form would render them quite suitable for use in combination with fabric-softening compositions in particulate form; such fabric-softening compositions can be used as is, or diluted with water before use.
• the present additives can conveniently be packaged into single-dose sachets containing the powdered additive, such sachets being made available to the consumer in the form of boxes containing several of them, said sachets containing either the same perfume, or different perfumes so as to allow the consumer to choose the perfume to be left on the laundered fabrics, for each laundry cycle.
• Dye is sprayed onto the above granulates; the formed granulates are used as perfume additives for fabric softening compositions.

Priority Applications (7)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8207791

Family Applications (1)

Country Status (7)

Cited By (26)

Families Citing this family (2)

Citations (4)

Family Cites Families (5)

• 1991
  • 1991-07-18 EP EP91201887A patent/EP0523287A1/fr not_active Withdrawn
• 1992
  • 1992-07-10 JP JP5502838A patent/JPH06509611A/ja active Pending
  • 1992-07-10 CA CA 2113613 patent/CA2113613C/fr not_active Expired - Fee Related
  • 1992-07-10 WO PCT/US1992/005686 patent/WO1993001794A1/fr active Application Filing
  • 1992-07-17 MX MX9204224A patent/MX9204224A/es not_active IP Right Cessation
  • 1992-07-17 PT PT10070692A patent/PT100706A/pt not_active Application Discontinuation
  • 1992-07-17 IE IE922340A patent/IE922340A1/en not_active Application Discontinuation

Patent Citations (4)

Also Published As

Similar Documents

Legal Events