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
  • C11D3/395—Bleaching agents
  • C11D3/3951—Bleaching agents combined with specific additives
• • 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
  • C11D3/395—Bleaching agents
  • C11D3/3955—Organic bleaching agents

Definitions

• Trichlorocyanuric acid and dichlorocyanuric acid and mixtures of trichlorocyanuric acid and dichlorocyanuric acid which substances are meant by the term chlorinated cyanuric acid used herein, are Well known bleaching agents which have been incorporated in bleaching compositions of various kinds.
• alkaline or neutral salts such as sodium carbonate, sodium orthophosphate, pyrophosphate or tripolyphosphate, sodium silicates and sodium sulphate
• wetting or detergent agents such as sodium alkylbenzene sulphonates.
• compositions can be stabilised against a loss of active chlorine by the addition to them of certain unsaturated organic compounds.
• the invention provides a bleaching composition containing a chlorinated cyanuric acid, as here-inbefore defined, stabilised by a compound of the general formula R.CH:CH.X, where at least one of R and X is an electronreleasing group.
• Stabilisation of chlorinated cyanuric acid in accordance with the present invention can be effected in dry particulate compositions which give neutral, acidic or alkaline solutions in Water.
• At least one of the groups R and X is a phenyl group, a substituted phenyl group, a benzyl (C H .CH group or a benzyl group substituted in the aromatic nucleus (Y C H .CH).
• One of the groups R and X may be a hydrogen atom, a methyl group, an hydroxymethyl (HO.CH group or an ester or ether of an hydroxymethyl group.
• the groups R and X may be joined together to form a cyclic system.
• Compounds chosen to stabilise chlorinated cyanuric acids in accordance with the present invention should react with hypochlorous acid but should not have a very low vapour pressure nor yet be extremely volatile.
• Compounds of boiling point at atmospheric pressure outside the range C. to 360 C. are not contemplated as being normally useful within the scope of the present invention, although compounds boiling below 150 C. may be employed where sealed containers or volatility depressants such as mineral oil are employed.
• Compounds of boiling point at atmospheric pressure within the range 225 C. to 270 C. are especially preferred.
• Compounds suitable for the stabilisation of chlorinated cyanuric acids in accordance with the present invention include cinnamyl alcohol, cinnamyl cinnamate, anethole, stilbene, indene, methyl eugenol and methyl isoeugenol. Safrole, iso-safrole, eugenol and isoeugenol are especially preferred.
• the amount of stabilising compound to be used depends upon a number of factors, such as the physical form of the chlorinated cyanuric acid and the nature of the stabilising compound to be used, the nature and amount of the other ingredients of the composition and the conditions under which it may be stored. It is preferred to use a granulated chlorinated cyanuric acid. Appreciable increases in stability may be obtained with as little as 1%, by Weight of the chlorinated cyanuric acid, of stabilising compound according to the invention, while amounts of up to 50% are generally more than adequate to give substantially complete stability for normal compositions and times and conditions of storage. It is preferred to use from 2% to 20% of stabilising compound by weight of the chlorinated cyanuric acid.
• compositions of the invention care must be taken that the chlorinated cyanuric acid and the stabilising compound are not brought into contact with one another before at least one of them is, and preferably both are, diluted with or adsorbed on some of the other ingredients of the composition.
• a slight loss of available chlorine is generally found to have taken place during the process of mixing a chlorinated cyanuric acid with the other ingredients of a bleaching composition such as a bleaching scouring powder, and this mixing loss is often increased by the presence of organic compounds added for the purpose of stabilising the chlorinated cyanuric acid on storage. It is a further advantage of many of the compositions of the invention that this mixing loss is found to be relatively small.
• stabilising compositions of the invention are soluble or miscible with the perfume normally used in commercial bleaching or detergent compositions.
• a preferred method of incorporating the stabilising compounds in such cases is to form .a prefume-stabiliser mixture which is then sprayed onto the remainder of the bleaching composition.
• the procedure in making up the composition was as follows.
• the sodium dodecylbenzene sulphonate and the inorganic salts were lightly ground with about 1% of the silica.
• the triohlorocyanuric acid was mixed with a further small amount of the silica (about and the two mixes were then mixed thoroughly with the bulk of the remaining silica by rolling.
• the stabilising compound was added last as a mixture with the rest of the silica containing 1 to 6% of the compound.
• Example 11 and 12 were tested together, in comparison with a control which had no stabiliser added.
• Example 13 was tested against a control which had no stabiliser added.
• the control compositions are included for purposes of comparison only, and are not within the scope of the invention claimed.
• composition according to claim 1 in which the amount of the stabilizing agent is from about 2 to about 20% by Weight of the bleaching agent.
• composition according to claim 1 in which the stabilizing agent is safrole is safrole.

Landscapes

• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Detergent Compositions (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10248993

Family Applications (1)

Country Status (11)

Cited By (2)

Citations (6)

• 0
  • NL NL281281D patent/NL281281A/xx unknown
  • NL NL133582D patent/NL133582C/xx active
  • BE BE620566D patent/BE620566A/xx unknown
• 1961
  • 1961-07-24 GB GB26775/61A patent/GB1008312A/en not_active Expired
• 1962
  • 1962-07-16 US US210252A patent/US3278443A/en not_active Expired - Lifetime
  • 1962-07-20 FR FR904670A patent/FR1335198A/fr not_active Expired
  • 1962-07-20 CH CH876762A patent/CH417823A/de unknown
  • 1962-07-21 DE DEP1271A patent/DE1271289B/de active Pending
  • 1962-07-23 ES ES0279455A patent/ES279455A1/es not_active Expired
  • 1962-07-23 AU AU20259/62A patent/AU268744B2/en not_active Expired
  • 1962-07-24 AT AT597462A patent/AT241405B/de active
  • 1962-07-24 LU LU42114D patent/LU42114A1/xx unknown

Patent Citations (6)

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