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
  • 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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
• • 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
  • C11D3/16—Organic compounds
  • C11D3/18—Hydrocarbons
• • 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
  • C11D3/2093—Esters; Carbonates
• • 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
  • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
• • 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

Definitions

• the present invention relates to fabric softener compositions, in particular to fabric softener compositions comprising an aqueous phase and a hydrophobic phase.
• Fabric softeners for domestic use are primarily designed to give a pleasant feel to fabrics, to impart freshness or a pleasant smell, and to control the static electricity that impairs the comfort of handling and wearing clothes. They are generally aqueous dispersions containing a cationic softener as an active material.
• compositions according to the present invention are possessed of numerous advantages.
• the fragrance is separated from aggressive media such as the cationic softener and the acidic aqueous phase which at a pH ⁇ 4 may act to degrade the fragrance, and as such, its effect is much longer lasting compared with fragrances employed in aqueous dispersion systems.
• composition As the composition is provided as a two-phase system, it should be shaken prior to use to ensure good mixing of all the ingredients. However, because of the problem of fragrance degradation it is desirable that after use, the composition re-establishes its two-phase form as quickly as possible, and preferably separation into the distinct phases occurs within about 10 to about 40 minutes after agitation.
• Softeners for use in a composition according to the present invention may be selected from cationic softeners, more particular from the group of cationic quaternary ammonium salts; ester-linked quaternary ammonium compounds; imidazolinium salts; and amido amine salts. Particular examples of these cationic softeners are described in more details below.
• the softener referred to hereinabove permit phase-separation within an acceptable time period, nevertheless they are surfactants and it is in the nature of surfactants to resist, to a certain extent, phase-separation and as such it is preferred to use as little cationic softener as possible.
• the cationic softener is needed to impart softness to fabrics and so one has to strike a balance between the need for rapid phase separation and the competitive need for acceptable fabric softness. It is within the realm of routine experimentation for the skilled person to find an appropriate balance having regard to these competing factors.
• it is preferred to use in the composition according to the present invention about 1 % to about 18 % (w/w) of a cationic softener, preferably 2 % to 13 % (w/w).
• excipients optionally present in the aqueous phase are anti-foaming agents, thickeners, fluorescent whitening agents, optical brightening agents, anti-wrinkling agents, anti-shrinking agents, sunscreens, colour care agents, colorants, or ironing aids.
• oils are preferred wherein the HLB (hydrophilic-lipophilic balance) is below 5, more preferably between 4 and 1.
• the oil may be a hydrocarbon oil, for example a mixture of hydrocarbon oils obtained from petroleum, in particular petroleum jelly or for example Isopar® produced by Exxon, in particular Isopar® L, Isopar® M or Isopar® H.
• Other preferred oils are silicone oils such as dimethicone polysiloxane or Tegopren®; or ester oil such as isopropylmyristate. Mixtures of ester oil, hydrocarbon oil and silicone oil may also be used. Because of environmental reasons biodegradable oils are preferred.
• the fabric softener composition according to the present invention comprises 1 % to 50 % (w/w) of the hydrophobic phase, preferably 3 % to 20 % (w/w), and most preferred 5 % to 12 % (w/w).
• the oil may coat the fragrance, such that when the composition is applied to a fabric it tends to promote prolonged release of fragrance and so increasing the substantivity of the fragrance on the fabric, for example preferred compositions according to the invention may impart fragrance to a fabric for up to 7 days after treatment. It was found that the rinse loss of the fragrance during the rinse cycle and/or the fragrance lost during the tumble drying process is much lower compared with aqueous dispersion fabric softeners. On dry fabrics a 3 - 5 time stronger fragrance, measured by headspace, can be achieved compared with conventional aqueous dispersion fabric softeners. The headspace analysis is described in the Journal of Agriculture and Food Chemistry, Vol. 19, No. 6 (1971), page 1049 - 1056.
• the composition according to the present invention may contain all kinds of fragrances of natural and/or synthetic origin, for example geraniol, citronellyl acetate and vanilline.
• the composition comprises one fragrance or a mixture of fragrances.
• water soluble fragrances for example phenylethylalcohol and diethylmalonate are preferably to be avoided.
• preferred fragrances have a clogP greater than 2, most preferred a clogP greater than 3.
• the composition according to the present invention comprises about 0.1 % to about 3 %(w/w) fragrance.
• fragrance compositions having at least 80 % (w/w) of fragrance with a clogP greater than 2.
• the hydrophobic phase may comprise a lipophilic dye, for example Puricolor® blue FBL5, Puricolor® blue FBL5 Puricolor® blue ABL9, Puricolor® green U3 or Puricolor® yellow AYE23 from Ciba.
• a lipophilic dye for example Puricolor® blue FBL5, Puricolor® blue FBL5 Puricolor® blue ABL9, Puricolor® green U3 or Puricolor® yellow AYE23 from Ciba.
• composition according to the present invention comprises from 2 % to 15 % (w/w) cationic softener; from 3 % to 20 % (w/w) ester oil; from 0.1 % to 3 % (w/w) fragrance; from 57 % to 92.9 % (w/w) water; and from 2 % to 5 % (w/w) other excipients.
• a fabric softening composition of the present invention (herein after named as "bi-phase fabric softener”) was formulated as follows: % w/w Part A Rewoquat® WE 18 (Goldschmidt) di-(tallow carboxyethyl) hydroxy-ethyl methylammonium methosulfate 10.00 Deionised Water 74.45 Calcium chloride 0.50 Myacide® BT330 (Boots) 2-bromo-2-nitrophropane-1,3-diol 0.05 Part B Isopropylmyristate 11.50 Isopar ® M (Exxon) 2.50 Fragrance 1.00 100.00
• the water and the Rewoquat® WE 18 was heated separately to 50°C. While stirring the preheated water, one half of the Rewoquat® WE 18 (preheated to 50°C) was added. Calcium chloride was added and then the remaining part of the Rewoquat® WE 18 while stirring the mixture. After cooling to room temperature under stirring, Myacide® BT330 was added. Finally, part B was added.
• the bi-phase fabric softener composition prepared according to example 1 was compared to a mono-phase fabric softener composition formulated as follows: % w/w Part A Deionised Water 81.75 MgCl 2 (saturated solution) 1.0 Part B Rewoquat® WE 18 di-(tallow carboxyethyl) 13.0 (Goldschmidt) hydroxy-ethyl methylammonium methosulfate GenapolO100 (Hoescht) Ethoxylated fatty alcohol C16 - C18 10EO 2.0 Antifoam 110A-EU (Dow Corning) silicone emulsion 1.0 Part C Dequest 2010 (Monsanto) Hydroxyethyliden 1,1 diphosphonic acid 0.2 Proxel GXL (ICI) Benzisothiazolinone sodium salt 0.02 Bronidox L (Cognis) 5 bromo-5nitro-1,3 Dioxane 0.03 Fragrance 1.0 100.00
• the bi-phase fabric softener delivered significantly more fragrance on the cotton terry towels.

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Citations (8)

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• 2001
  • 2001-07-27 EP EP01118341A patent/EP1279726A1/de not_active Withdrawn
• 2002
  • 2002-07-25 EP EP02745044A patent/EP1412467B1/de not_active Expired - Lifetime
  • 2002-07-25 WO PCT/CH2002/000420 patent/WO2003012022A1/en not_active Application Discontinuation
  • 2002-07-25 AT AT02745044T patent/ATE310798T1/de not_active IP Right Cessation
  • 2002-07-25 US US10/484,225 patent/US20050049173A1/en not_active Abandoned
  • 2002-07-25 ES ES02745044T patent/ES2252480T3/es not_active Expired - Lifetime
  • 2002-07-25 DE DE60207577T patent/DE60207577T2/de not_active Expired - Fee Related
  • 2002-07-25 KR KR10-2004-7001147A patent/KR20040018519A/ko not_active Application Discontinuation

Patent Citations (8)

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