JPH02147695A - Creamy polishing composition - Google Patents

Abstract

PURPOSE: To provide the subject stable and consistent composition excellent in cleaning property, rinsing property, and brightening performance which substantially contains no thickener by including a surface active agent, a specified solvent, an electrolyte and an abrasive.

CONSTITUTION: This composition contains 2-10 wt.% of a surface active agent preferably containing an ethoxylated cationic surface active agent (e.g.: 12-14 C alkyl ethoxylated sulfate), 1-10 wt.% of a solvent having a solubility in water at 25°C of 0-5 wt.%, preferably, less than 1 wt.%, and more preferably selected from hexylcarbitol, n-butoxypropoxypropanol and 2-ethyl-1,3-hexadiol, 0.5-8 wt.% of an electrolyte (e.g.: Na₂CO₃), less than 2 wt.% of a thickener (e.g.: polyacrylate) used as occasion demands, and an abrasive (e.g.: CaCO₃).

COPYRIGHT: (C)1990,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD This invention relates to stable, viscous, abrasive-containing polishing compositions that exhibit excellent leaning, rinseability, and brightening performance.

These compositions are substantially free of thickeners.

Background The formulation of creamy abrasive-containing polishing compositions is well known.

Such compositions are described, for example, in EPA Application No. 0.126.
, 545, EPA Application No. 0.216,416, U.S. Patent No. 4.676.920, and Canadian Patent No. 1.194.381.

In such conventional polishing creams, it has always been necessary to incorporate thickeners to properly suspend the abrasive particles and provide a viscosity to the finished product.

However, thickener materials have been found to have drawbacks, particularly with respect to rinseability performance. In modern formulations, the amount of thickeners has been reduced, but still remains non-negligible.

It has now been discovered that abrasive-containing cream polishing compositions can be formulated that are substantially free of thickeners.

In fact, 141 consists of a surfactant, a nonpolar solvent, and an electrolyte.
It has been found that the combination can provide the desired viscosity and suspend a large amount of abrasive particles.

The above combination also provides very good lean, rinseability, and shine performance.

SUMMARY OF THE INVENTION The present invention contains an abrasive in a suspension and a thickening agent.
The invention relates to a viscous, ream-like polishing composition containing a surfactant, a combination of a solvent and an electrolyte having a solubility in water of 5% or less.

DETAILED DESCRIPTION OF THE INVENTION Surfactants Water-soluble surfactants useful in the present invention include synthetic anionic surfactants, nonionic surfactants, amphoteric surfactants,
Mention may be made of zwitterionic surfactants and mixtures thereof.

The anionic surfactants used in the present invention include C alkylbenzene sulfates and 8-18 sulfonates, paraffin sulfonates, olefin sulfonates, and ethoxylated products such as C alkyl polyethoxy sulfates 8-18 sulfonates, and sulfosfucine-1.

Preferred anionic surfactants include 01□-14 alkylbenze]/sulfonates, and C 1 -14 kyl ethoxylated sulfates having 1 to 10 ethylene oxide units.

3 times ethoxylated C ethoxylated anion 12-1
4-on surfactant is sold by AKZO under the trade name ELFAN o.

Anionic detergent surfactants are most commonly used in the form of sodium, potassium or triethanolammonium salts. Nonionic surfactants include alkoxylated (especially ethoxylated) alcohols, alkylphenols, and amine oxides. The formula RO(CH
2CH20).

(wherein R is a C12-C15 alkyl chain and n is 6
10) are preferred nonionic surfactants.

The anionic surfactants of the present invention are present in an amount of 0.3% to 8%, preferably 3% to 8%.

Mixtures of non-ethoxylated anionic surfactants and ethoxylated anionic surfactants in a ratio of 1/1 to 4/1 are preferred.

Particularly preferred are mixtures of alkylbenzene sulfonates and alkyl ethoxylated sulfates.

If present, the nonionic surfactant accounts for 0.0% of the composition.
It is used in amounts of 1 to 6% by weight.

The total amount of surfactants is 2-10% by weight of the composition.

Abrasives The types of abrasives used in the present invention are selected from water-insoluble, non-coarse-grained materials that are well known in the literature for their relatively mild abrasive properties. It is highly preferred that the abrasive used in the present invention is not undesirably "scratchable." Abrasive materials having a Mohs hardness of about 7 or less are typically used. Abrasives with a Mohs hardness of 3 or less can be used to avoid scratching on aluminum or stainless steel finishes. Suitable abrasives for the present invention include inorganic materials, particularly materials such as calcium carbonate and diatomaceous earth, as well as materials such as Fuller's earth, magnesium carbonate, china clay, acpulgite, calcium hydroxyapatite, calcium orthophosphate, and dolomite. It will be done. The above inorganic substance can be characterized as a "strong abrasive". Synthetic organic abrasives such as urea-formaldehyde, methyl methacrylate, melamine-formaldehyde resins, polyethylene spheres, polyvinyl chloride can be advantageously used to avoid scratching on surfaces, especially plastic surfaces. When such "soft abrasives" are used, strong builders can be incorporated into the composition.

Typically, the abrasive has a particle size range of 10 to 1000 microns and is used in the composition at a concentration of 5% to 50%.

Organic Solvent The organic solvent used in the present composition has a water solubility in pure deionized water at 25°C of 0-5%, preferably less than 1%, most preferably less than 0.5%.

Suitable solvents include hexylcarbitol, 1(2-
n-butoxy-1-methylethoxy)propan-2-ol (butoxybroboxyprobanol), and 2-
Ethyl-1,3-hexanediol is mentioned.

Carbitol (CarbitoF) solvent is 2-(2-
(alkoxyethoxy) ethanol type of compound.

Mixtures of solvents can be used provided the solubility of the mixture in water is within the above range. Thus, water-soluble solvents, such as water-soluble carpitol solvents, including ethyl, propyl or butyl carpitol, and water-soluble cellosolve (
cel Iosolve■) solvent can be used in trace amounts.

The organic solvent is present in an amount of 1% to 10%, preferably 2% to 6%.

The electrolyte used in the electrolyte composition is selected from the group consisting of alkali metal sulfates, alkali metal carbonates or bicarbonates, alkali metal halides and citrates, and alkali metal nitrates and mixtures thereof. The electrolyte or mixture thereof may vary from 0.5% to 8% by reference formulation weight. The preferred range is about Q, 5% to 3.5%
and alkali metal bicarbonates and carbonates and mixtures thereof are the preferred forms.

Optional Ingredients In addition to the essential ingredients described above, the composition can contain additional ingredients that may be highly desirable.

For example, it is highly preferred that the composition contains a detersive builder and/or a sequestering agent. Compounds that can be classified as detergent builders and are well known in the art include nitrilotriacetate (NTA), ethylenediaminetetraacetate (EDTA), aminopolyphosphonate (DEQUEST), water-soluble phosphates such as tripolyphosphonate and sodium orthophosphate and birophosphate. Includes sodium, silicates, and mixtures thereof. These builders are
It is preferably not used in combination with strong abrasives such as calcium carbonate, but is recommended in combination with soft organic abrasives such as polyvinyl chloride.

Sequestering agents with lower sequestration constants can advantageously be used in conjunction with hard or soft abrasives. These metal ion sequestering agents include polycarboxylates and citrates.

It is likewise suitable to include soaps in the compositions of the invention. Preference is given to soaps made from coconut oil fatty acids.

The soap is used in an amount of 0.2-3% of the composition.

Another optional component of the composition is an amine oxide having the formula:

[wherein R is an alkyl or alkenyl group having 10 to 22 carbon atoms; R1 may be the same or different and is selected from C1-4 alkyl, ethylene oxide and propylene oxide; n is 1 to is an integer of 6; 2m is an integer of 0 to 6; p is O or 1
x, y and 2 are each 1 in the case of an alkyl substituent, and are integers from 1 to 10 in the case of an ethylene oxide or propylene oxide substituent,
z) is 25 or less. ] The amine oxide component is used in an amount of 0.1% to 1.5%, preferably 0.25% to 0.75%.

The type of amine oxide suitable for use in the present invention corresponds to the above general formula in which the individual substituents may vary as follows: R: tallow alkyl; coconut 1[1-18 CI2-14 Alkyl; lauryl; valmityl; stearyl; oleyl R1: ethylene oxide; propylene oxide; methyl; ethyl n: 2, 3.4 m: Q, l or 2 x, y and 2 are each 1.2.3 or 4. and their sum is from 2 to 18 Preferred amine oxides for use in the present invention are defined by the following substituents: R: Calkyl R: ethylene oxide; methyl mho or 1 n: 3 (m is different from 0) x, y, z are each at least 1, and their sum is from 2 to 12, for example 2.3.7 and 12.

One particularly preferred class of amine oxide species is represented by heptanoamine oxides having the following substituents: mh.

R1: Methyl; Ethyl; Ethylene oxide R: Coconut C alkyl X and y are both 1 A particular example of this preferred class of mono-amine oxides is: N-C coconut alkyl-N,N-dimethylamine oxide.

Thickeners should preferably not be included in the compositions of the invention. If present, the amount of thickener will be kept below 0.2%. Conventional thickening agents such as polyacrylates, xanthan gum, carboxymethyl cellulose, swellable smectite clays can be used in the present invention in these amounts.

Optional ingredients are also represented by ingredients typically used in commercial products to provide aesthetic or additional product performance benefits. Typical ingredients include pH adjusters, fragrances, dyes, optical brighteners, soil suspending agents, detergent enzymes, gel control agents, freeze-thaw stabilizers, bactericides, preservatives, hydrotropes, and the like.

The composition typically contains up to 90% water as a carrier. As an example, the amount of water is, for example, 50% to 80%
It can change within the range of. Water-alcohol (eg, ethanol, isopropanol, butanol, etc.) mixtures can also be used.

The composition is preferably formulated in an alkaline pH range, generally pH 8-11, preferably about 10-10.8. Caustics such as sodium hydroxide, sodium bicarbonate, etc. can be used to adjust and buffer pH as desired.

The following examples are given as illustrations of the present compositions and are not intended to limit the scope of the invention.

Abbreviation NaPS: C13-C16 sodium paraffin sulfonate; LAS: Sodium salt of linear C11-C8 alkylbenzene sulfonic acid; ELFAN 243 S: C alkyl 12-14 ethoxylated sulphate) (3EO);
okolan o) P HC25: Cross-linked polyacrylate thickener: ETHD: 2-ethyl-1,3-hexanediol; TMPD: 2,2,4-trimethyl-1,3-pentanediol BPP: Butoxypoxybanol Heisei Name of the invention in the Heisei patent application: Cream-like polishing composition 3 Relationship with the amended person's case

Claims (1)

[Claims] 1. (a) 2% to 10% surfactant (b) 1% solvent having a solubility in water of 0 to 5% at 25°C
~10% (c) 0.5% to 8% electrolyte (d) An abrasive-containing polishing cream composition characterized in that it contains less than 0.2% of a thickener. 2. The composition of claim 1, wherein the solvent has a solubility in water of less than 1%. 3. The composition according to claim 1, wherein the solvent is selected from the group of hexyl carbitol, n-butoxypropoxypropanol and 2-ethyl-1,3-hexanediol. 4. The composition of claim 1, wherein the surfactant comprises an ethoxylated anionic surfactant. 5. The composition of claim 4, wherein the surfactant is a mixture of non-ethoxylated anionic surfactant and ethoxylated anionic surfactant in a ratio of 1/1 to 1/4. 6. The surfactant is present in an amount of 3% to 8% and the solvent is 2%
6. The composition of claim 5, wherein the electrolyte is present in an amount of 0.5% to 3.5%.