Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D9/00—Chemical paint or ink removers
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D9/00—Chemical paint or ink removers
  • C09D9/005—Chemical paint or ink removers containing organic solvents
• • 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
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/50—Solvents
  • C11D7/5004—Organic solvents
  • C11D7/5022—Organic solvents containing oxygen
• • 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
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/22—Organic compounds
  • C11D7/26—Organic compounds containing oxygen
  • C11D7/263—Ethers
• • 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
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/22—Organic compounds
  • C11D7/26—Organic compounds containing oxygen
  • C11D7/265—Carboxylic acids or salts thereof
• • 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
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/22—Organic compounds
  • C11D7/26—Organic compounds containing oxygen
  • C11D7/266—Esters or carbonates

Definitions

• the present invention relates to a composition making it possible both to strip coatings, for example based on paint, and to clean objects soiled with oils or greases.
• the first stripping and degreasing compositions of the above type were based on methylene chloride and or on trichloro-1, 1, 1 ethane (T.1.1.1.) (See for example US.-A. 2.507.983 and DE-A. 2.524.752). Such compositions have the advantage of being effective and inexpensive.
• compositions can cause damage to the environment and more particularly to the ozone layer (Montreal protocol aimed at stopping the use of T.1.1.1 normally at the end of 1995).
• compositions are not always suitable for the stripping of coatings of different nature such as water paints, oil paints, lacquers, varnishes and plastic resins, and above all are not effective for both stripping coatings and cleaning of various objects to remove oils and greases.
• the object of the present invention is to provide a composition which is precisely effective both for pickling and for cleaning. It also aims to propose a composition of the above type which
• .a variant may be free of solvents.
• a stripping and / or cleaning composition comprising by volume: a) 1 to 90% of at least one C1-C4 dialkyl ester of at least a C4-C6 aliphatic diacid. b) 99 to 1% of at least one ether chosen from ethers having:
• composition according to the invention therefore contains at least 1 to 90% by volume, preferably 10 to 80% of a C1-C4 dialkyl ester of at least one C4-C6 aliphatic diacid.
• the mixture of diacid esters are esters derived essentially from glutaric and succinic adipic acids, the alkyl groups of the ester part being especially chosen from methyl and ethyl groups, but which can also be propyl, isopropyl, butyl, n-butyl and isobutyl.
• the C4 to Ce diacids above are in fact the by-products of the preparation of adipic acid which is one of the main monomers of polyamides, and the dialkyl esters are obtained by esterification of this by-product which generally contains by weight from 15 to 30% of succinic acid, from 50 to 75% of glutaric acid and from 5 to 25% of adipic acid.
• Diacid esters are commercially available products. As commercial products, there may be mentioned more particularly Rhodiasolv RPDE® marketed by the company Rhône-Poulenc and "Du Pont Dibasic Esters®” marketed by the Company Du Pont de Nemours.
• the composition according to the invention also contains in volume from 99 to 1%, preferably from 90 to 20% by weight of at least one ether chosen from ethers having: - a flash point higher than 5 ° C at least one group methoxy per molecule a molar mass of less than 200.
• ether which can be used in the compositions according to the invention, there may be mentioned: 1-ter-butoxy-2-methoxyethane, anisole, 1,4-dimethoxybenzè ⁇ e, ethylene glycoldimethyl ether, 1,2-dimethoxybenzene , 2-methoxy-1, 3-dioxolane, diethylene glycoldimethyl ether, 1, 2,3-trimethoxybenzene,
• compositions according to the invention may also contain at least one of the products below.
• compositions according to the invention can be used ISOPAR® from Exxon, SOLTROL® from Shell and HI-SOL® solvents from Ashland. It is recommended to use 10 to 100 volumes, preferably 30 to 60 volumes of c) per 100 volumes of a) + b). Mention may also be made of the compounds having an aliphatic hydrocarbon chain, saturated or comprising at least one unsaturation, substituted by at least one radical of the alkyl, aryl or alkylaryl type.
• the aliphatic chain comprises 3 to 12 carbon atoms, and preferably 4 to 10 carbon atoms, these values are given taking into account the longest hydrocarbon chain of the molecule, substituents excepted.
• the aliphatic hydrocarbon chain is substituted by two aryl and / or alkylaryl groups.
• the aryl radical has 6 carbon atoms
• the alkylaryl radical corresponds to an aromatic ring substituted by at least one alkyl group, preferably C - C4.
• the bond between the alkylaryl substituent and the aliphatic hydrocarbon chain of the compound can take place via one of the carbon atoms of the alkyl part of this compound, or, preferably directly through one of the atoms of aromatic nucleus.
• the aliphatic hydrocarbon chain of the compound may also comprise at least one alkyl radical, more particularly comprising 1 to 4 carbon atoms, the methyl group being preferred.
• At least one nonionic surfactant preferably chosen from ethoxylated or ethoxy-propoxylated alkylphenols and ethoxylated or ethoxy-propoxylated fatty alcohols, at a content which may for example be between 0.1 and 10%, of preferably 0.5 and 5% by weight relative to the total weight of the composition.
• surfactants facilitate rinsing with water of the compositions on the substrate to be pickled or cleaned and, in certain cases, to accelerate the pickling and / or cleaning action.
• ethoxylated or ethoxy-propoxylated triglycerides ethoxylated or ethoxy-propoxylated fatty acids, ethoxylated or ethoxy-propoxylated sorbitan esters, fatty ethoxylated or ethoxy-propoxylated amines, di (phenyl -1 ethyl) ethoxylated or ethoxy-propoxylated phenols, tri (1-phenyl ethyl) ethoxylated or ethoxy-propoxylated phenols.
• the number of oxyethylene (OE) and / or oxypropylene (OP) units of these nonionic surfactants usually varies from 2 to 100 depending on the HLB (hydrophilic / lipophilic balance) desired.
• the number of OE and / or OP units is between 2 and 50.
• the ethoxylated or ethoxy-propoxylated fatty alcohols generally have from 6 to 22 carbon atoms, the OE and OP units being excluded from these numbers, and are of preferably ethoxylated.
• the ethoxylated or ethoxy-propoxylated triglycerides can be triglycerides of plant or animal origin (such as lard, tallow, peanut oil, butter oil, cottonseed oil, oil flaxseed, olive oil, palm oil, grape seed oil, fish oil, soybean oil, castor oil, colr.a oil, coconut oil, coconut oil), and are preferably ethoxylated.
• the ethoxylated or ethoxy-propoxylated fatty acids are esters of fatty acids (such as for example oleic acid, steanic aid) and are preferably ethoxylated.
• the ethoxylated or ethoxy-propoxylated sorbitan esters are cyclized sorbitol esters of fatty acids from C 10 to C 2 o such as launque acid, steanic acid or oleic acid, and are preferably ethoxylated.
• ethoxylated triglyceride is intended in the present invention, both the products obtained by ethoxylation of a triglyceride with ethylene oxide as those obtained by transesterification of a triglyceride with a polyethylene glycol.
• ethoxylated fatty acid includes both the products obtained by ethoxylation of a fatty acid with ethylene oxide and those obtained by esterification of a fatty acid with a polyethylene glycol.
• Ethoxylated or ethoxy-proproxylated fatty souls generally have from 10 to 22 carbon atoms, the OE and OP units being excluded from these numbers, and are preferably ethoxylated.
• the ethoxylated or ethoxy-propoxylated alkylphenols generally have 1 or 2 alkyl groups, linear or branched, having 4 to 12 carbon atoms, in particular octyl, nonyl or dodecyl.
• nonionic surfactants from the group of ethoxy or ethoxy-propoxylated alkylphenols, di (1-phenyl ethy-ethoxylated phenols and tr ⁇ (1-phenyl ethy-phenyl ethoxy or ethoxy-propoxylated) there may be mentioned: d ⁇ (1-phenyl ethyphenol ethoxylated with 5 EO units, d ⁇ (1-phenyl ethyDphenol ethoxylated with 10 EO units, • tr ⁇ (1-phenyl ethyphenol ethoxylated with 16 EO units, t ⁇ (1-phenyl ethyphenol ethoxylated with 20 EO units) , t ⁇ (1-phenyl ethyDphenol ethoxylated with 25 EO units, t ⁇ (1-phenyl ethyDphenol ethoxylated with 40 EO units, the tri (1-phenyl eth
• thickening agents can be used such as, for example, cellulose derivatives (ethylcellutose, hydroxypropycellulose), xanthan, guar, locust bean gums, alginates, polyacrylates, starches, modified starches and modified clays.
• At least one polar aprotic co-solvent such as for example lactams or lactones such as N-methyl-2 pyrrolido ⁇ e or gamma-butyrolactone, alkylene glycol ethers, acetonitrile, dimethylformamide, dimethyl sulfoxide and N- methylmorpholine.
• Abrasive particles chosen from aluminum oxide, silica, silicon carbide, tungsten carbide and silicon carbonitride.
• compositions according to the invention allow the cleaning of oils and greases and the stripping of paints and plastic resins.
• the substrates to be cleaned or pickled can be very varied in nature.
• wood, metals and their alloys such as steel, stainless steel, aluminum, copper, plastics and mineral glasses.
• the cleaning and or pickling process is as follows: a) bringing the object to be cleaned into contact with the formulation of the present invention by immersion (with or without stirring) or spraying.
• the contacting temperature is between 5 ° C and 50 ° C.
• the contact time is between 1 min and 60 min.
• the composition of the present invention allows the total or partial solubilization of the oils to be removed.
• the composition of the present invention allows the detachment of the resins to be removed, b) Rinsing with water of the cleaning formulation of the present invention.
• the substrate used is a pre-cleaned steel plate (Q-panel type R). To be greased, the plate is immersed for two minutes in the oil, then stored for 6 hours.
• the greased plate is then immersed in the cleaning composition, cited above, for a time tn, at room temperature.
• the plate is rinsed under a stream of running water for 5 to 10 seconds on each side (flow rate: 2 l / min, temperature 17 ° C).
• the cleanliness of the plate is evaluated by means of the water film test (Water Break test, ASTM F22-65,1992).
• the immersion time, t n required is 15 seconds.
• composition C2 having the following composition: - 68% RPDE - 30% Solvexo 200 (hydrocarbon cut sold by Exxon and point flash 98 ° C
• the necessary immersion time is 30 s for this composition which, by the absence of anisole, is not part of the invention and is 2 times less effective.
• Plastic resins are polycarbonates of the "bis allyl carbonate diethyiene glycol" type and
• bisphenol A bis allyl carbonate The stripping composition is as follows:
• the glass supports soiled by the two resins are immersed in the composition, cited above, at 50 ° C., without stirring. After 30 minutes, the two crosslinked plastic resins are completely detached from the glass supports.

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

Applications Claiming Priority (3)

Publications (1)

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• 1995
  • 1995-03-24 FR FR9503467A patent/FR2732034B1/fr not_active Expired - Fee Related
• 1996
  • 1996-03-22 EP EP96908173A patent/EP0815178A1/de not_active Withdrawn
  • 1996-03-22 JP JP8528992A patent/JPH11502558A/ja not_active Abandoned
  • 1996-03-22 BR BR9607880A patent/BR9607880A/pt not_active IP Right Cessation
  • 1996-03-22 US US08/913,802 patent/US5916860A/en not_active Expired - Fee Related
  • 1996-03-22 TR TR97/01016T patent/TR199701016T1/xx unknown
  • 1996-03-22 KR KR1019970706674A patent/KR19980703270A/ko not_active Application Discontinuation
  • 1996-03-22 AU AU51509/96A patent/AU5150996A/en not_active Abandoned
  • 1996-03-22 WO PCT/FR1996/000434 patent/WO1996030453A1/fr not_active Application Discontinuation
  • 1996-03-22 CA CA002214388A patent/CA2214388A1/fr not_active Abandoned
  • 1996-03-25 ZA ZA962363A patent/ZA962363B/xx unknown
• 1997
  • 1997-09-23 NO NO974388A patent/NO974388D0/no unknown

Non-Patent Citations (1)

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