Liquid aqueous cleaning preparations for hard surfaces

A liquid cleaning preparation for hard surfaces comprising an amphoteric polymer compound containing both anionic and cationic centers in the molecular thereof. The polymer is obtained by copolymerization of a cationic vinyl monomer with an anionic vinyl polymer, and in a 0.01% solution of water having a German hardness of 16.degree.d produces irreversible hydrophilization of polyvinyl chloride with increments in the wetting tension of at least 3 mN/m. The preparation may contain an anionic, nonionic, cationic or amphoteric surfactant or mixtures thereof. The polymer compound is present in an amount of from about 0.01% to about 10% by weight, based on the weight of the preparation, and the surfactant is present in a weight ratio of polymer to surfactant of from about 20:1 to about 1:1.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
This invention relates to liquid aqueous cleaning preparations for hard 
surfaces, and more particularly to such preparations for use in the home 
and in institutions which provide thorough cleaning and antistatic 
properties to surfaces which tend to develop static charges without 
leaving behind any visible residues. 
2. Discussion of Related Art 
Cleaning preparations based on surfactants with or without the addition of 
builders are normally used for cleaning hard surfaces both in the home and 
in institutions. It is known that natural or synthetic polymers may be 
added to such cleaning preparations to enhance their cleaning power. Thus, 
German Patent Applications Nos. 28 40 463 and 28 40 464 describe the use 
of high molecular weight polyethylene glycols, and German Patent 
Application No. 29 13 049 describes the use of polyvinyl alcohols, 
polyvinyl pyrrolidones, cellulose ethers, polysaccharides, proteins and 
polyacrylamides as cleaning enhancers. 
According to Great Britain Patent Specification No. 1,073,947, 
polyacrylamides inter alia improve the soil suspending power of liquid 
cleaning preparations for hard and irregular-shaped surfaces. 
U.S. Pat. No. 3,696,043 describes polymers of aromatic monovinyl monomers 
with unsaturated dicarboxylic acids, and U.S. Pat. No. 4,508,635 describes 
the same class of compounds, but in partially esterified form, for 
improving the visual residue behavior of the cleaned surfaces and for 
avoiding the coating by glass of remaining water vapor. 
Finally, British Patent Specification No. 2,104,091 describes liquid 
cleaning preparations which, together with standard anionic, nonionic, 
cationic or amphoteric surfactants, contain an addition of an amphoteric 
polymer compound prepared by polymerization of a cationic vinyl monomer 
with an anionic vinyl monomer. This addition, which is used in small 
amounts compared with the surfactant, brings about an improvement in 
detergency. 
Unfortunately, none of these known liquid cleaning preparations is able to 
prevent freshly cleaned plastics material from attracting dust particles 
from the air and thus appearing as if it has not been cleaned. 
Therefore, with the increasing number of plastics surfaces in the home, it 
would make cleaning very much easier and more efficient if those surfaces 
could be antistatically finished during cleaning. It would also be of 
value to the consumer if one and the same cleaning preparation could be 
used for a wide range of applications to enable optimal effects to be 
obtained both on hydrophobic surfaces, i.e., antistatic effects, and also 
on hydrophilic surfaces, i.e., anti-coating effects. 
Accordingly, an object of the present invention is to provide cleaning 
preparations which are suitable for cleaning all washable hard surfaces in 
the home and in institutions and which at the same time bring about both 
thorough cleaning and antistatic finishing of surfaces which tend to 
develop static charges, and also anti-coating effects on mirrors without 
leaving behind any visible residues in the form of streaks, patches or the 
like on the treated surfaces. With prior art polymers and their end-use 
formulations, it is not possible to satisfy all the above-mentioned 
requirements with one and the same cleaning preparation. 
DESCRIPTION OF THE INVENTION 
Other than in the operating examples, or where otherwise indicated, all 
numbers expressing quantities of ingredients or reaction conditions used 
herein are to be understood as modified in all instances by the term 
"about". 
Surprisingly, it has been found that the aforementioned objects can be 
accomplished by using selected amphoteric copolymers which contain both 
anionic and cationic centers in the molecule, and are characterized by 
certain hydrophilization properties, together with surfactants in certain 
critical quantitative ratios. 
It is thus a particular characteristic of the cleaning agent in accordance 
with this invention that, in contrast to the teaching of British Patent 
No. 2,104,091, it contains quantitatively less surfactant than polymer 
compound, and at most small quantities of surfactant and polymer compound. 
The present invention pertains to liquid aqueous cleaning agents for hard 
surfaces which contain at least one amphoteric polymer compound obtained 
by copolymerizing a cationic vinyl monomer with an anionic vinyl monomer 
in a quantity of 0.01 to 10% by weight, as well as an anionic, nonionic, 
cationic or amphoteric surfactant or mixtures thereof, characterized in 
that the amphoteric polymer compounds with anionic and cationic centers in 
the molecule are selected from among polymer compounds which in 0.1% 
solution in water of 16.degree.d bring about an irreversible 
hydrophilization of PVC with increments of the wetting tension of at least 
3 milli-Newton per meter (mN/m), and wherein the surfactant quantity is 
selected such that the weight ratio of amphoteric polymer to surfactant is 
20:1 to 1:1, preferably 10:1 to 1:1. 
The amount of amphoteric polymer compound present in the cleaning 
preparations may be from 0.01 to 10% by weight, based on the weight of the 
cleaning preparation. Preferred preparations according to the invention 
contain the amphoteric polymer compound in quantities of from 0.02 to 5% 
by weight of the preparations. 
Where the preparations according to the invention are applied to the hard 
surfaces to be cleaned, they produce not only a good antistatic effect, 
but also a good anti-coating effect coupled wtih good residue behavior. 
It is possible to use virtually any of the surfactants and surfactant 
mixtures hitherto typically used for cleaning preparations of the type 
herein. Non-ionic surfactants of the amine oxide type containing at least 
one C.sub.10 -C.sub.20 alkyl group are particularly preferred. Typical 
representatives include, for example, the compounds 
N-dodecyl-N,N-dimethylamine oxide, N-tetradecyl-N,N-dihydroxyethylamine 
oxide, and N-hexadecyl-N,N-bis-(2,3-dihydroxypropyl) -amine oxide. 
Favorable effects are also obtained with other nonionic surfactants, for 
example with adducts of from 4 to 40 moles, and preferably 4 to 20 moles 
of ethylene oxide or ethylene oxide and propylene oxide with 1 mole of 
fatty alcohol, alkane diol, alkane phenol, fatty acid, fatty amine, fatty 
acid amide or alkane sulfonamide. Particularly useful are the adducts of 
from 5 to 16 moles of ethylene oxide or ethylene oxide and propylene oxide 
with coconut oil or tallow fatty alcohols, with oleyl alcohol or with 
secondary alcohols containing from 8 to 18, and preferably from 12 to 18 
carbon atoms and with mono- or dialkylphenols containing from 6 to 14 
carbon atoms in the alkyl groups. In addition to these water soluble 
nonionics, however, polyglycol ethers containing from 1 to 4 ethylene 
glycol ether residues in the molecule, which are insoluble or not 
completely soluble in water, are also useful, particularly where they are 
used together with water-soluble nonionic or anionic surfactants. 
Other suitable nonionic surfactants include the water-soluble adducts, 
containing from 20 to 250 ethylene glycol ether groups and from 10 to 100 
propylene glycol ether groups, of ethylene oxide with polypropylene oxide, 
alkylenediamine polypropylene glycol and alkyl polypropylene glycols 
containing from 1 to 10 carbon atoms in the alkyl chain, wherein the 
polypropylene glycol chain acts as a hydrophobic residue. 
Anionic surfactants may also be used in this invention either individually 
or in combination with nonionic surfactants. It is preferred to use 
surfactant combinations of anionic surfactants selected from the group of 
sulfonate and sulfate surfactants, and nonionic surfactants of the 
ethoxylated alkanol, alkenol and alkylphenol type. 
Suitable anionic surfactants include, for example, soaps of natural or 
synthetic fatty acids and of resinic or naphthenic acids. Suitable 
synthetic anionic surfactants include those of the sulfonate and synthetic 
carboxylate type. 
Suitable surfactants of the sulfonate type include alkylbenzene sulfonates 
containing 9 to 15 carbons in the alkyl group, mixtures of alkene and 
hydroxyalkane sulfonates and also disulfonates, such as those obtained, 
for example, from monoolefins containing a terminal or internal double 
bond by sulfonation with gaseous sulfur trioxide and subsequent alkaline 
or acidic hydrolysis. Alkane sulfonates obtainable from alkanes by 
sulfochlorination or sulfoxidation and subsequent hydrolysis or 
neutralization or by addition of bisulfites onto olefins are also 
suitable. Other suitable surfactants of the sulfonate type include the 
esters of .alpha.-sulfofatty acids, for example, the .alpha.-sulfonic 
acids from hydrogenated methyl or ethyl esters of coconut oil, palm kernel 
oil or tallow fatty acid. 
Suitable surfactants of the sulfate type include the sulfuric acid 
monoesters of primary alcohols, for example, from coconut oil fatty 
alcohols, tallow fatty alcohols or oleyl alcohol, and those of secondary 
alcohols. Sulfated fatty acid alkanolamides, fatty acid monoglycerides or 
reaction products of from 1 to 4 moles of ethylene oxide with primary or 
secondary fatty alcohols or alkylphenols are also suitable. 
Other suitable anionic surfactants herein include the fatty acid esters of 
amides of hydroxy or amino-carboxylic acids or sulfonic acids, such as for 
example, fatty acid sarcosides, glycolates, lactates, taurides or 
isethionates. 
The anionic surfactants may be present in the form of their alkali metal, 
alkaline earth and ammonium salts and as soluble salts of organic bases, 
such as mono-, di- or triethanolamine. The sodium salts are generally 
preferred for reasons of cost. 
The cationic surfactants which may also be used in this invention contain 
at least one hydrophobic group and at least one basic, water-solubilizing 
group optionally present in salt form. The hydrophobic group may be an 
aliphatic or cycloaliphatic hydrocarbon group preferably containing from 
10 to 22 carbon atoms or an aromatic alkyl or cycloalkyl group preferably 
containing from 8 to 16 aliphatic carbon atoms. Suitable basic groups 
include primarily basic nitrogen atoms which may even be repeatedly 
present in a surfactant molecule. The compounds herein are preferably 
quaternary ammonium compounds, such as for example, 
N-dodecyl-N,N,N-trimethylammonium methosulfate, N-hexadecyl-or 
N-octadecyl-N,N,N-trimethylammonium chloride, 
N,N-dicocosalkyl-N,N-dimethylammonium chloride, 
N-dodecyl-N,N-dimethyl-N-benzylammonium bromide, the reaction product of 1 
mole of tallow alkylamine with 10 moles of ethylene oxide, 
N-dodecyl-N,N'N'-trimethyl-1,3-diaminopropane, and N-hexadecyl pyridinium 
chloride. Where cationic surfactants are used, they should of course be 
tested in the customary way for their compatibility with other 
constituents of the formulation. 
The amphoteric copolymers used in accordance with the invention include 
copolymers containing anionic and cationic centers in the molecule 
prepared in accordance with British Patent Specification No. 2,104,091 
from two or three of the following monomers: 
AS- acrylic acid or salts thereof, 
DMAEM- dimethylaminoethyl methacrylate, 
DMANA- dimethylaminoneopentyl acrylate, 
DMAPMA- dimethylaminopropylmethacrylamide, 
EA- ethylacrylate, 
MAPTAC- methacrylamidopropyltrimethylammonium chloride, 
MAS- methacrylic acid or salts thereof, and 
MMA- methylmethacrylate, 
and which contain at least 1 mole of a nitrogen-containing acrylic acid 
derivative per mole of acrylic acid. The salts include the alkali metal, 
ammonium and/or alkanolamine salts thereof. 
The measurement of the irreversible hydrophilization of plastics was 
achieved with the aid of wetting tension measurements as described in 
Colloid and Polymer Science, Vol. 264, pp. 56-64, (1986). The polymers in 
0.01% solution in 16.degree.d hard water were tested on PVC. The surface 
tension Y.sub.L in mN/m (previously known as dyn/cm, see DIN 1301) 
according to the equation 
EQU j=Y.sub.L. cos .theta.(=F/P) 
is the upper limit of the wetting tension j for .theta..fwdarw.0. Other 
values can be adopted numerically without alteration, e.g., for pure water 
at 25.degree. C., Y.sub.L =72 mN/m=72 dyn/cm. 
.theta. in degrees is the equilibrium marginal angle measured in the liquid 
between a flat solid measurement piece and the tangent to the surface of 
the drop at the wetting point. 
In the technological determination of the wetting tension j against water, 
a measurement is performed of the force (F) with which a measurement piece 
of circumference P (e.g., PCC film) is drawn into or pushed out of water. 
Thus the measurement value is a measure of the wettability (wetting 
tension j=F/P) of a measurement piece with water. 
The efffective irreversible adsorption of amphoteric polymers on a test 
piece changes this force more or less depending on the hydrophilicity or 
hydrophobicity of the molecular structure. 
In the case of a hydrophilization effect, the force with which the 
measurement piece is pulled into the water is greater than in the initial 
state. Thus, positive increments of the wetting tension result from this 
(+.DELTA.j). (In the case of a hydrophobization effect, the force with 
which the measurement piece is pulled into the water becomes smaller than 
in the initial state. Negative increments of the wetting tension 
(-.DELTA.j) would result from this.) (Also see B. Miller and R.A. Yound in 
Textile Res. J., Vol. 45, pp. 359-365, 1975.) 
The use of water-soluble or solution-promoting solvents is not essential to 
the effects obtained in accordance with the invention, although their 
presence can have a positive effect on the evaporation behavior of 
residues of the cleaning preparation on the treated surfaces. Examples of 
suitable solvents include linear, branched and cycloaliphatic C.sub.2 
-C.sub.12 alcohols and ethers of identical or different polyhydric 
alcohols or the partial ethers of polyhydric alcohols. Solvents such as 
these include, for example, di- or triethylene glycol polyglycerols and 
the partial ethers of ethyleneglycol, propylene glycol, butylene glycol or 
glycerol with aliphatic monohydric alcohols 
Suitable water-soluble or water-emulsifiable organic solvents also include 
ketones, such as acetone, methyl ethyl ketone, and also aliphatic, 
cycloaliphatic, aromatic and chlorinated hydrocarbons as well as the 
terpenes. 
In addition, it is possible to incorporate solution promoters known per se, 
including or in addition to the water-soluble organic solvents, such as in 
particular low weight aliphatic C.sub.1 -C.sub.4 alcohols, so-called 
hydrotropes of the lower alkylaryl sulfonate type, for example toluene, 
xylene or cumene sulfonate. They may also be present in the form of their 
sodium and/or potassium and/or alkylamino salts. The water-soluble or 
solution-promoting solvents may be present in quantities of from 0 to 15% 
by weight, and preferably in quantities of from 0 to 10% by weight, based 
on the preparation as a whole. 
Known builders, particularly inorganic or organic complexing agents, which 
are preferably present in the form of their alkali metal or amine salts, 
particularly the potassium salts, may also be added to the cleaning 
preparations according to the invention in quantities of from 0 to 3% by 
weight and preferably in quantities of from 0 to 2% by weight, based on 
the preparation as a whole. The builders may also include alkali metal 
hydroxides. Suitable inorganic complexing builders include, in particular, 
the alkaline-reacting polyphosphates, particularly the tripolyphosphates, 
and also the pyrophosphates. They may be completely or partly replaced by 
organic complexing agents. Other inorganic builders which may be used in 
accordance with the invention include, for example, dicarbonates, 
carbonates, borates, silicates or orthophosphates of the alkali metals. 
Organic complexing agents of the aminopolycarboxylic acid type include, 
inter alia, nitrilotriacetic acid, ethylenediamine tetraacetic acid, 
N-hydroxyethylethylene -diamine triacetic acid and polyalkylene polyamine 
-N-polycarboxylic acids as well as di- and polyphosphonic acids, and their 
alkali metal salts. 
Various generally N- or P-free polycarboxylic acids have recently been 
proposed as builders in the literature, the compounds often, although not 
always, being polymers containing carboxyl groups. Many of these 
polycarboxylic acids are capable of complexing calcium. This is the case, 
for example, with citric acid, tartaric acid, benzene hexacarboxylic acid, 
tetrahydrofuran tetracarboxylic acid, gluconic acid, etc. Since the 
preparations of this invention should preferably show a neutral to mildly 
alkaline reaction, acidic or alkaline components may have to be added to 
regulate the pH-value. 
Suitable acidic substances include typical inorganic or organic acids or 
acidic salts, such as for example, hydrochloric acid, sulfuric acid, 
bisulfates of the alkali metals, aminosulfonic acid, phosphoric acid or 
other acids of phosphorus, particularly the anhydric acids of phosphorus 
or acidic salts thereof or acid-reacting solid compounds thereof with urea 
or other lower carboxylic acid amides, partial amides for phosphorus acids 
or anhydric phosphoric acid, citric acid, tartaric acid, lactic acid and 
the like. Where the alkaline builder content is not sufficient to regulate 
the pH-value, alkaline-acting organic or inorganic compounds, such as 
alkanolamines, namely mono-, di-or triethanolamine, or ammonia may also be 
added. 
Other additives typically used in cleaning preparations, such as for 
example, viscosity regulators, antimicrobial agents, dyes and perfumes, 
may also be present in the subject cleaning preparation providing they are 
compatible with the other constituents of the formulation. 
The following procedures were practiced in the examples. 
1. Preparation of the amphoteric polymers: 
(a) Procedure for preparing a copolymer of DMAEM:AS, molar ratio 5:1 
306 g of water, 26.8 g (0.17 mole) of dimethylaminoethyl methacrylate and 
2.46 g (0.034 mole) of acrylic acid were first weighed with external 
cooling into a 2 liter flask surmounted by a metering vessel. A pH value 
of approximately 6 was adjusted by addition of approximately 21 g of 30% 
sulfuric acid. The internal temperature of the mixture was kept below 
25.degree. C. 
A solution of 346 g of water, 241.2 g (1.54 moles) of dimethylaminoethyl 
methacrylate, 22.5 g (0.31 mole) of acrylic acid and approximately 200 g 
of 30% sulfuric acid prepared as described above was introduced into the 
metering vessel. 
The contents of the flask were then heated to a temperature of 80.degree. 
C. and polymerization initiated by addition of a solution of 2.6 g of 
ammonium peroxydisulfate in 20 g of water. 
The solution in the metering vessel was then introduced to the flask 
contents over a period of 1 hour. The internal temperature was kept 
between 78.degree. and 83.degree. C. by external cooling. On completion of 
the addition, a solution of 1.3 g of ammonium peroxydisulfate in 10 g of 
water was added and the mixture stirred for about 1 hour at 80.degree. C. 
A clear, yellow, moderately viscous polymer solution was obtained after 
cooling. 
At relatively low concentrations, the reaction may even be carried out in a 
single stage because in that case the reaction is less exothermic. This 
procedure is described below. 
(b) Procedure for preparing a copolymer of DMAEM:AS:MMA, molar ratio 3:1:1 
95.4 g of dimethylaminoethyl methacrylate (0.61 mole), 60.8 g of 
methylmethacrylate (0.61 mole), 0.7 g of azodi (isobutyronitrile) and 159 
g of isopropanol were weighed into a 2 liter flask. 43.8 g of acrylic acid 
(0.61 mole) in 635 g of water were added with stirring. Heating beyond 
22.degree. C. was avoided by external cooling. The mixture was then 
carefully adjusted to a pH value of approximately 6.0 by addition of 
approximately 5 g of 30% sulfuric acid and was then stirred under nitrogen 
for 2.5 hours at 65.degree. to 80.degree. C. A colorless, clear, slightly 
viscous polymer solution was obtained after cooling. 
The other substances were similarly prepared without any difficulty for the 
expert. 
2. Test Methods 
The properties of the preparations of the invention were determined by the 
following tests: 
(a) Antistatic effects 
(a1) Measuring method 
15 cm.times.15 cm plates of polyvinyl chloride (PVC), polyethylene (PE), 
and acrylic glass were treated with the test products, acclimatized in a 
control environment (20.degree. C./65% relative humidity) and their 
electrical surface resistance measured using the ring electrode according 
to DIN 54 345, Part 1. Three plates of the same material were used for 
each test product. Similar plates which had been treated either only with 
water or with recommended prepared solutions of commercial 
polymer-containing cleaning preparations were used for comparison. 
The measured resistance values (in ohms) of the plates treated with the 
cleaning preparations according to the invention were lower by several 
powers of 10 than the blank values and considerably more favorable than 
the comparison values obtained with the state-of-the-art cleaning 
preparation. 
(a2) Qualitative test 
As a rapid preliminary test, the plates were tested for their tendency to 
attract soot particles. The soot was prepared by burning cellulose. The 
plates described in (a1) which had been treated with the cleaning 
preparations therein and then dried were rubbed with a woolen cloth and 
held over the soot at a distance of 5 cm. Whereas the plates treated with 
the state-of-the-art cleaning preparation attracted the soot, the plates 
treated with the products according to the invention remained clean. 
(b) Anti-coating effects 
30 cm.times.40 cm mirrors were treated wtih the products according to the 
invention and, for comparison, with the state-of-the-art cleaning 
preparation and placed in a domestic refrigerator. After 30 minutes, the 
mirrors were visually assessed. 
Whereas the preparations according to the invention prevented coating of 
the mirrors, the mirrors treated with the comparison preparation were 
coated. 
(c) Residue behavior 
Surfaces of mirror glass, glazed tiles, PVC, PE, acrylic glass and Resopal 
were treated as recommended with the preparations according to the 
invention and, for comparison, with the state-of-the-art cleaning 
preparation. 
After the surfaces had dried, their appearance for homogeneity was visually 
assessed. In every case, the preparations according to the invention 
showed distinctly more favorable residue behavior than the comparison 
product. 
(d) Cleaning effect 
To test its cleaning effect, the cleaning preparation to be tested was 
applied to an artificially soiled PVC surface. A mixture of carbon black, 
machine oil, a saturated fatty acid trigyceride, and a low-boiling 
aliphatic hydrocarbon was used as the artificial soil. The 26.times.28 cm 
test area was uniformly coated with 2 g of the artificial soil using a 
surface spreader. 
A plastic sponge was wetted with 12 ml of the cleaning preparation solution 
to be tested and moved by machine over the test surface. After 6 wiping 
movements, the cleaned test surface was held under running water and the 
loose soil removed. The cleaning effect, i.e. the whiteness of the plastic 
surface thus cleaned, was measured using an LF 90 photoelectric 
colorimeter (Dr. B. Lange). The clean white plastic surface served as the 
white standard. 
Since in the measurement of the cleaned surface the colorimeter was set at 
100% while the soiled surface produced a zero reading, the values read off 
in the case of the cleaned plastic surfaces could be equated with the 
percentage cleaning power (%CP). (Quality standards of the 
Industrieverband Putz-und Pflegemittel (IPP), published in Seifen, Ole, 
Fette, Wachse, 108, No. 16, page 527, (1982)). 
(e) Composition of a state-of-the-art cleaning preparation 
The state-of-the-art cleaning preparation comprised an aqueous solution of 
7.0% by weight of a straight-chain primary C.sub.9 -C.sub.11 alkanol 
reacted with 5 moles of ethylene oxide, 2% by weight of sodium lauryl 
ether sulfate, 1% by weight of a partial ester of styrene-maleic acid 
anhydride polymers, and 0.45% by weight of hydroxyethyl cellulose. 
The following examples were prepared simply by mixing the given components. 
All the percentages are percentages by weight.

EXAMPLE I 
0.1% cocosalkyldimethylamine oxide 
0.15% amphoteric polymer DMAEM/AS (molar ratio 10:1) 
4% ethanol 
2% isopropanol 
1% propylene glycol butylether 
0.1% perfumes 
ad 100% fully deionized water 
This cleaning preparation showed a very good anti-coating effect on mirror 
glass. It provided PVC and PE surfaces with an antistatic finish and left 
no visible residue behind on the treated surfaces. The IPP cleaning power 
is considerably better than that of an in-use solution of a commercial 
cleaning preparation for hard surfaces based on a nonionic and an anionic 
surfactant and a partially esterified styrenemaleic anhydride copolymer 
according to European Patent No. 66342. 
EXAMPLES II-X 
In the basic formulation of Example I, the amphoteric polymer was varied as 
follows: 
DMAEM/AS molar ratio 1:1 
DMAEM/AS molar ratio 2:1 
DMAEM/AS molar ratio 5:1 
DMAEM/MAS molar ratio 2:1 
DMAEM/MAS molar ratio 5:1 
DMAEM/AS/MMA molar ratio 1:1:1 
DMAEM/AS/MMA molar ratio 3:1:1 
DMAEM/AS/MMA molar ratio 5:1:1 
DMAPMA/AS molar ratio 2:1 
In every case, the cleaning preparation obtained could be sprayed by 
commercial spray pumps and produced the same favorable results as the 
formulation of Example I in the tests for anti-coating effect, antistatic 
effect, residue behavior and cleaning power. 
EXAMPLES XI and XII 
0.05% sec. C.sub.11 -C.sub.18 alkane sulfonate 
0.1% fatty alcohol containing 5 moles ethylene oxide and 4 moles of 
propylene oxide (based on coconut oil) 
0.04% EDTA 
7% ethanol 
1% isopropanol 
0.01% pine oil 
0.15% polymer DMAEM/AS 
ad 100% fully deionized water 
The molar ratio of the monomers in the polymer ofExample XI was 3:1 and, in 
the case of Example XII, 5:1. 
Both cleaners showed irreversible hydrophilicization on PVC which led to 
good antistatic effects and high cleaning power. The residue behavior on 
glass and plastic surfaces was very good.