AU619168B2 - Creamy scouring compositions containing saturated terpene solvent - Google Patents

Description

r VW I i PHILLIPS ORMONDE AND FITZPATi Patent and Trade Mark Attorneys 367 Collins Street Melbourne, Australia

I

CK 25 NOV 1%97 Melbourne i P17/2/83

SI

7? 619168

AUSTRALIA

Patents Act COMPLETE SPECIFICATION

(ORIGINAL)

Class Application Number: Lodged: Int. Class o o 0 Complete Specification Lodged: Accepted: Published: Priority Related Art: APPLICANT'S REF.: CM-238 S Name(s) of Applicant(s): Address(cs) of Applicant(s); THE PROCTER GAMBLE COMPANY One Procter Gamble Plaza, Cincinnati, Ohio 45202, United States of America Actual Inventor(s): Stephen CULSHAW Address for Service is: PHILLIPS, ORMONDE AND FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne, Australia, 3000 Complete Specification for the invention entitled: "CREAMY SCOURING COMPOSITIONS CONTAINING A SATURATED TERPENE SOLVENT" The following statement is a full description of this invention, including the best method of performing it known to applicant(s): P19/3/84 P18/7/79 PHILLIPS ORMONDE FITZPATRICK Patent and Trade Mlark Attorneys 367 Collins Street Melbourne, Australia STUART TAYLOR I7 I UW MW CM- 2 3 8 -lA- 1*54 A A 4 OR A

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0 A 0005 600404 A A 0 AS O AR

OS

1 4 A 4 Al A 44 CREAMY SCOURING COMPOSITIONS CONTAINING SATURATED TERPENE SOLVENT Stephen Culshdw 004*44 4 4 004444 S I Technical Field The present invention relates to viscous abrasive-containing scouring compositions, which show excellent stability, exhibit very good cleaning and shine performance, and are not aggressive towards surl-ces to be cleansed therewith, and towards packaging mateti.Lals.

The compositions are substantially free of unsaturated terpene solvents, but contain a saturated terpene solvent.

1< I 2 Background It is well-known to formulate scouring compositions, in liquid or creamy form, containing solvents.

In particular, creamy scouring compositions containing an abrasive and a binary solvent system constituted of unsaturated terpenes and polar solvents have been disclosed in European Patent Application 0,126,545, published on o 00 0oo November 28, 1984. In these compositions, the terpenes both 00 'CO provide cleaning benefits and exhibit desirable 0 O0 10 emulsification properties during the making process thus 0000 enhancing product viscosity.

0 00 0 05 It has become desirable, however, to replace unsaturated terpenes by solvents which are fully compatible with all ,0 types of surfaces to be cleansed therewith, and packaging 0o materials, and at the same time exhibit good cleaning and 0 0 emulsification properties.

00 00 o. oo It has now been found that the use of saturated terpene solvents in replacement of the unsaturated counterparts, provides the desired compatibility with packaging material, o, 20 while maintaining very good cleaning, shine performance, and 0 00 product viscosity.

In addition, the use of saturated terpene solvents brings improvements in terms of product stability and odor quality.

U.S. Patent 4,576,738 discloses liquid hard-surface compositions containing 3aturated terpenes in combination with a water-soluble solvent.

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i. i i 3 The prior art, however, fails to disclose or suggest the formulation of viscous, abrasive-containing, scouring compositions containing saturated terpenes.

It is an object of the present invention to provide viscous creamy cleanser compositions which are fully compatible with surfaces to be cleansed therewith and with packaging materials. It is a further object of the present invention to provide a cleanser composition with excellent 0o cleaning and shine performance.

40 0 000 4 00 10 Summary of the Invention 00000 scouring compositions containing a surface-active agent n abrasive, and an organic solvent and if desired cony tional additives, characterized in that said cleanser 0 o' substantially free of unsaturated terpene s ents and that the organic solvent contains a saturate erpene hydrocarbon.

000000 0 0 0 0 Detailed Descri ion of the Invention 00 0 000 0 0 The surface-acti agents, the abrasives, the solvent and the optional ngredients are described in more detail hereinafter.

less indicated to the contrary, the %-indications tand for by weight".

p/LI^ 1 -3a- The present invention provides a viscous, creamy scouring cleanser containing a surface-active agent, an organic solvent, an abrasive, and if desired conventional additives, characterized in, that said cleanser is substantially free of unsaturated terpenes and that the organic solvent contains a saturated terpene, wherein the saturated terpene is present at levels of from 1% to 10% by weight.

The present invention further provides a viscous creamy scouring cleanser containing from 3% to 5% by weight of organic surface-active agent; from 5% to 30% of an abrasive material having a Mohs hardness equal to or below 7; from 1.5 to 5% by weight of pinane; from 0.5 to 5% by weight of benzyl alcohol.

0 0 DETAILED DESCRIPTION OF THE INVENTION :4 0 0 The surface-active agents, the abrasives, the solvent o0 ^o and the optional ingredients are described in more detail hereinafter.

Unless indicated to the contrary, the %-indications stand for by weight".

O* I 0050 pi a i -4- Surface-actiue Aqents *Opp S o o e t0 0 0 000 o 44 00 0 0 0 B~o 0 00 o 4 4 4 4 0 4 0 00 0 4 0© 4 00 4 40 0 tt 0 oS a Water-soluble detersive surfactants useful herein include well-known synthetic anionic, nonionic, amphoteric and zwitternonic surfactants and mixtures thereof. Zp4yaf4-.

-e These\& the alkyl benzene sulfates and sulfonates, paraffin sulfonates, olefin sulfonates, alkoxylated (especially ethoxylated) alcohols and alkyl phenols, amine oxides, sulfonates of fatty acids and of fatty acid esters, and the like, which are well-known in the detergency art.

10 In general, such detersive surfactants contain an alkyl group in the C10-C18 range; the anionic detersiue surfactants are most commonly used in the form of their sodium, potassium or triethanolammonium salts. The nonionics generally contain from 3 to 17 ethylene oxide groups per mole of hydrophobic moeity. Especially preferred in the compositions of the present invention are: C12-C16 alkyl benzene sulfonates, C 12-C18 paraffin-sulfonates and the ethoxylated alcohols of the formula RO(CH 2

CH

2 0) n, with R being a C 12 20 alkyl chain and n being a number from 6 to Anionic surfactants are frequently present at levels from 0.3 to preferably 2 to of the composition.

Nonionic surfactants, are used at leuels between 0.1% to 6% by weight of the composition. Mixtures of the like surfactants can also be used. The total level of surface-active agents is preferably from 3% to Abrasive The abrasive types employed herein are selected from water-insoluble, non-gritty materials well-known in the literature for their relatively mild abrasive properties.

It is highly preferred that the abrasives used herein not be undesirably "scratchy". Abrasive materials having a Mohs o oo 0 0.s'0 5, 0.C 4 0 0 4 O 40 j~J.

i hardness in the range of about 7, or below, areyic used; abrasives having a'Mohs hardness of 3, or below, can be used to avoid scratches on aluminum or stainless steel finishes. Suitable abrasives herein include inorganic materials, especially such materials as calcium carbonate and diatomaceous earth, as well as materials such as Fuller's earth, magnesium carbonate, China clay, attapulgite, calcium hydroxyapatite, calcium orthophosphate, dolomite and the like. The aforesaid inorganic materials °o 10I can be qualified as "strong abrasives". Synthetic organic abrasives such as urea-formaldehyde, methyl methacrylate o'9o melamine-formaldehyde resins, polyethylene spheres and polyuinylchloride can be advantageously used in order to 0 0 avoid scratching on certain surfaces, especially plastic surfaces. When such "soft abrasives" are used, strong builders can be incorporated in the composition.

o 0 S.Typa~b=ally abrasives have a particle size range of 10-200 microns and are used at concentrations of 5% to in the compositions. Thickeners are frequently added to o o a 20 suspend the abrasives.

The organic solvent The organic solvent to be used in the o present composition contains saturated terpene hydrocarbons.

Saturated terpenes for use herein include the hydrogenated species corresponding to well-known mono- or sesquiterpenes, which can be acyclic or cyclic.

Preferred materials for use herein are the hydrogenated mono- and bicyclic monoterpenes, selected from hydrogenated terpinenes, terpinolenes, limonenes, and pinenes.

A highly preferred material is hydrogenated pinene, also

:_II.

6 known as pinane or 2,6,6-trimethyl bicyclo heptane.

The saturated terpene hydrocarbon herein is used at levels of from 1% to 10% by weight of the composition, preferably 1.5% to 5% by weight.

The solvent system can optionally contain polar solvents in combination with the saturated terpene component, in order to further improve cleaning performance. This includes polar solvents with low water solubility, like benzyl alcohol, and diols such as 2-ethyl-1,3-hexanediol and S 10 2,2,4-trimethyl-1,3-pentanediol, and solvents with high water-solubility, like water-soluble CARBITOL solvents or

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water-soluble CELLOSOLUE solvents. Water-soluble CARBITOL solvents are compounds of the 2-(2-alkoxyethoxy)ethanol class wherein the alkoxy group is derived from ethyl, propyl or butyl; a preferred water-soluble carbitol is 2-(2-butoxyethoxy)ethanol also known as butyl carbitol. Water-soluble CELLOSOLUER solvents are compound of the 2-alkoxyethoxy ethanol class, with 2-butoxyethoxyethanol being preferred.

Preferred for use herein is benzyl alcohol.

The above-described polar solvents can be used in levels ranging from 0.5 to 10% of the composition, preferably to the weiqht ratio of saturated terpene to polar solvent- bigFin the range from 5:1 to 1:5,\preferably 2:1 to 1:2.

The compositions herein are substantially free of unsaturated terpene-solvents. Inasmuch as solvents are generally used at levels exceeding about unsaturated terpenes cannot be incorporated in the claimed compositions

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:LI O I 7 -7 in such proportions. It is understood, however, that relatively minor sub-additive levels of unsaturated terpenes. below about 0.6% (calculated on the total cleanser composition), can be present originating from conventional ingredients such as perfumes.

Optional Ingredients In addition to the essential ingredients listed hereinbefore, the present composition can contain additional components, which can be highly desirable.

For example, the compositions herein can contain a detergent builder and/or metal ion sequestrant. Compounds classifiable and well-known in the art as detergent builders include the nitrilotriacetates, (NTA), ethylene diamine tetracetate (EDTA), amino-polyphosphonates (DEQUEST), water-soluble phosphates such as tri-polyphosphate and sodium ortho- and pyro-phosphates, silicates, and mixtures thereof. These builders are preferably not used in combination with strong abrasives like calcium carbonate, but are recommended in combination with soft organic abrasives like polyvinylchloride or soft inorganic abrasives like talc.

Metal ion sequestrants of lower metal sequestration constant can advantageously be used in combination with strong or soft abrasives. Those metal ion sequestrants include polycarboxylates and citrates. Preferred builders/sequestrants for use in the present invention are NTA, EDTA, citrates and mixtures thereof. The builders/sequestrant will be present at levels of from 1% to It is highly preferred, to include soaps in the compositions of the invention. Soaps prepared from coconut oil fatty acids are preferred.

-8- Soaps are used in amounts ranging from 0.05% to 3% by weight of the composition.

Thickeners should preferably be included in the compositions of the invention, in order to suspend the abrasive. However the level will be kept under 2%, preferably from 0.2% to Common thickeners such as the polyacrylates, xanthan gums, carboxymethyl celluloses, swellable smectite clays, and the like, can be used herein.

Optional components are also represented by ingredients preferably used in commercial products to provide aesthetic or additional product performance benefits. Preferred ingredients include pH regulants, perfumes, dyes, optical brighteners, bleaches, soil suspending agents, detersive enzymes, gel-control agents, ooos freeze-thaw stabilizers, bactericides, preservatives, and the like.

0a o e Another optional ingredient for use herein is 0 *a represented by conventional detergent hydrotropes. Examples a. of suitable hydrotropes are urea, monoethanolamine, 0 dietharolamine, triethanolamine and the sodium, potassium, ammonium and alkanol ammonium salts of xylene-, toluene-, ethylbenzene- and isopropyl-benzene sulfonates. It is a particular feature of the present invention, however, that stable formulations can be prepared without the need for 00.. hydrotropic materials of this kind.

The compositions herein preferably contain up to about 90% water as a carrier. By way of example the water-level can vary in the range from e.g. 50% to 80%. Water-alcohol ethanol, isopropanol, butanol, etc.) mixtures can also be used. Alkylated polysaccharides can be used to increase the stability and performance characteristics of the compositions.

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9 The compositions herein are preferably formulated in the alkaline pH range, generally in the range of pH 8-11, preferably about 10-10.8. Caustics such as sodium hydroxide and sodium carbonate can be used to adjust and buffer the pH as desired.

The following examples are given by way of illustrating the compositions herein, but are not intended to be limiting of the scope of the invention.

Abbreviations NaPS

LAS

LAB

Lutensol) A07 Dobanol 45/7 HC FA n

NTA

EDTA

CaCO SokolanPHC 25

ETHD

TMPD

PUC

Sodium C13 to C 16 paraffin sulfonate Sodium salt of linear C 11 -C8 alkyl benzene sulfonate Linear C10- 22 alkyl benzene Condensate of 1 mole C 12

-C

14 fatty alcohol with 7 moles of ethylene oxide C 14-C1 oxoalcohol with 7 moles of ethylene oxide per mole of alcohol Narrow cut, hardened, coconut fatty acid Sodium nitrilotriacetate Ethylene diamine tetraacetate Calcium carbonate Crosslinked polyacrylate thickener 2-Ethyl-1,3-hexanediol 2,2,4-trimethyl-1-3-pentanediol Polyvinylchloride I -il 10 A creamy cleanser was prepared by mixing the listed ingredients in the stated proportions by weight).

Ingredients Ex. I 0000 o OIC 0 0q 00 o Oop o 0~Q 0 CC 0 0,0, gC0,40~ 0 0 A 00 00 0 op 0 0 0 000 o 00 0 0 On 0 00 00 nO Ct 0 0 000000 CC 0 o on 00 0 000 0 p0 0 0 CC 0 o no

LAS

Na PS Lu tensol407 Na 2CO3 HC FA n Benzyl alcohol 10 Pinane CaCO 3 SokolanOPHC25 Water minors 0.3 0.2 30.0 up to 100 The above composition showed a good product stability and a satisfactory compatibility with polyethylene-packaging material.

11 In addition, the following compositions are prepared: 0*0'.

0 00 00 10 09 0 041 0 09 00 0 0..00 000000 0 0 O 00 00 0 0 00 00 0 0 t 000 0 00 00 0 0 00 000009 0 2'0 ~009 0'.

0 0 0 0* 00 0 000 0 00 1 0 0 0 0 01 Ingredients

LAS

maps Lutensol R 07 Waco 3 I4CnFA Benzyl alcohol Butyl carbitol

ETHO

TMPO

Pi nane Paramntan

STPP

NTA

EDTA

Citrate CaCD 3

PVC

Sokolan RPHC25 Water minors Ex. I1I 4.0 3.0 1.2 1.0 Ex. III Ex. IV 4.0 0.5 3.0 0.3 3.0 1.2 1.2 Ex. V Ex. VT 3.0 0.5 1.0 3.0 0.2 3.0 1.5 1.5 Ex. VII 3.0 1.2 Ex. VIII !0 2.0 .0 4.0 2.0 .0 1.0 30 3.0 .0 30.0 10.0 .5 0.4 0.5 u P 3.0 30.0 10.0 0.4 0.4 10.0 0.4 t o 10.0 0.4 10 0 Paramenthan =hydrogenated limonene

Claims (9)

1. A viscous creamy scouring cleanser containing a surface-active agent, an organic solvent, an abrasive, and if desired conventional additives, characterized in, that said cleanser is substantially free of unsaturated terpenes and that the organic solvent contains a saturated terpene, wherein the saturated terpene is present at levels of from 1% to 10% by weight.

2. A composition as claimed in claim 1 wherein the saturated terpene is selected from the group of hydrogenated monocyclic and bicyclic monoterpenes.

3. A composition as claimed in claim 1 wherein the saturated terpene is 2,6,6-trimethyl bicyclo(3,1,1)heptane. S°

4. A composition as claimed in claims 1-3, wherein the Soo organic solvent contains, in addition to the saturated a terpene, a polar solvent having a water solubility at 25 C oooo of at least 0 eo

5. A composition as claimed in claim 4 wherein said polar solvent is present at levels of from 0.5 to 10% by weight.

6. A composition as claimed in claim 4 or claim 5 wherein said polar solvent is benzyl alcohol. S

7. A viscous creamy scouring cleanser containing ^oo from 3% to 5% by weight of organic surface-active agent; from 5% to 30% of an abrasive material having a Mohs S hardness equal to or below 7; from 1.5 to 5% by weight of pinane; o" from 0.5 to 5% by weight of benzyl alcohol. o o

8. A composition as claimed in claim 1 substantially as hereinbefore described with reference to any one of the Examples. -13-

9. A composition as claimed in claim 7 substantially as hereinbefore described with reference to any one of the Examples. DATED: 4 November, 1991 PHILLIPS ORMONDE FITZPATRICK Attorneys for: THE PROCTER GAMBLE COMPANY 0 0 Q gO 00 a o 00 a CIO