HU204298B - Ice-solving and purifying compositions for glas surfaces - Google Patents

Abstract

A de-icing and cleaning compsn. contains (all vol.%s): 40-95 alcohol (2-5C), 1-30 mixt. of ethylene-glycol, methyl-glycol and di:acetone-alcohol, 0.1-1.0 surfactant as a fatty-acid-sulphate or dodecyl-benzene-sulphonate and 348 water. Opt. in addn. it also contains 0.5-10 corrosion inhibitor, as N-acetyl-imino-di-acetic-acid or salts or esters thereof, 0.05-2.0 scent, and 0.01-0.1 water soluble acrylamide type copolymer of 300000-1000000 mol.wt., which is added for complete removal of impurities.

Description

The present invention relates to de-icing and cleaning compositions which can be used to treat glass surfaces, particularly windscreens of vehicles.

One of the key issues in modern transport is the availability and quality of car care products, which have only recently begun to be developed in a number of countries, including our own.

One of the prerequisites for the safety and comfort of winter traffic is the use of de-icing agents to clean the windscreens.

It is a well-known phenomenon that organic solvents reduce the melting point of ice. This phenomenon is used when ice-frozen on a windshield is removed with de-icing mixtures. Among the organic solvents, C 2-6 alcohols, ethers and half ethers of C 2-4 glycols are widely used for this purpose. Solid or liquid cleaners are also common in these compositions to provide a cleaning effect. However, some of the known formulations do not contain any anti-icing, surface tension reducing, corrosion inhibiting or flocculating additives, so the effectiveness of these formulations is naturally limited.

No. 75 35 035. Japanese specification (Chemical Abtracts, 84.137402 m), discloses compositions to prevent icing and fogging that 10-60% of C ^ _ ₆ glycols, 40-90% of alcoholic £ holokat and 0.5-5% - containing fatty acid amides.

No. 8,113,383. Japanese Chemical (Chemical Abastracts, 96,54059 b) discloses aqueous compositions of alcohols and nonionic surfactants which do not contain additives. 3

No. 81,366,555. Japanese description (Chemical Abstracts,

95. 9016 (d) subject to carwash spray formulations. The composition of the example contains a mixture (MeOH, ethylene glycol, water, triethanolamine, anti-cosolvent, dimethyl ether, liquid propane and 4 carbon dioxide).

A2407123. s. Non-foaming formulations of glycol ethers containing propylene carbonate and saturated or unsaturated Cg- ₂₀ fatty alcohols are disclosed in the German patent specification. 4i

No. 191,109B. A Hungarian description describes aqueous compositions for de-icing and cleaning windshields of motor vehicles consisting of C _1-4 alcohols, glycerol, diethylene glycol monoaldl ether and N-acyl sarcosine salt. 5 (

These compositions have no flocculating effect, are only moderately inhibited and have an alcoholic odor.

Known compositions, which generally do not contain any special additives, have the disadvantage that they cannot simultaneously provide:

- facilitate the removal of ice;

- preventing icing;

-aszélvédőfénytörésmentessététele; 60

- preventing corrosion of the metal parts in contact;

-aszennyezésekhatékonyflokkulálása; and

- Preventing contamination of contaminants.

Our goal was to produce de-icing and cleaning compositions that still meet all the requirements for a long time. In our work, we have found that using alcohols is not enough, but using pure glycols is a matter of remaining ethylene in the windshield. -glycol causes a significant refraction of light, and this is a particularly disruptive conductor for the conductor. In an experiment, it has been shown that the best results are obtained using a mixture of glycols, glycol ethers and diacetone alcohol. This composition eliminates the aforementioned problems because the solvent mixture effectively prevents (a) the icing of the windscreen and thus satisfies road safety considerations. Alkylaryl sulfonates, alkaline sulfates and petroleum sulfonates may also be used as surface tension reducing agents in compositions to prevent refraction. We have found that these surfactants are best converted to fatty alcohol sulfates in the presence of alcohol, glycol, diketone and other organic carboxylic acid additives.

If corrosion prevention is also required, the compositions should employ a liquid anti-corrosion additive that effectively inhibits corrosion of the metal parts in contact with the aqueous medium. N-acetylated glycine derivatives, glycine esters, glycine salts as well as iminodiacetic acid, N-acetylated iminodiacetic acid and their esters were found to be suitable for this purpose, the triethanolamine salt of iminodiacetic acid being the best.

It is also advantageous to use a flocculant in the de-icer because this additive removes impurities (dust, dirt, etc.) from the glass surface and prevents their re-dissolution. The water-soluble acrylamide / maleic acid copolymer or a mixture of polyacrylic acid with a molecular weight of 500-900,000 is used as the cocatalyst.

A perfume to suppress the smell of alcohol. sulfur is used in compositions of high carbon (C ₁₂ -C ₁₇ ) aldehydes, preferably lemon or pine.

The materials in the examples were qualified by the following test:

The test mixture was sprayed onto a glass slide of ice in a chamber cooled to -20 ° C. Control experiments were also performed on the windshield of cars. The time needed for the ice to dissolve was determined on a cold, icy glass surface. After dissolution, the vehicle was defrosted with a car wiper blade on a chilled glass plate held vertically, and then classified as surface for light scattering, cleanliness, icing.

HU 204298 Β

The following examples further illustrate the invention without limiting it.

Example 1: An ice-breaker

901% isopropyl alcohol 51% ethylene glycol

0.51% and

4.51% water.

The liquid, assayed above, provided the de-icing effect in 20-30 seconds. The wiped surface gave a slightly opaque refraction. No icing was observed within 5 minutes.

* Example 2

Aerosol composition:

901% isopropyl alcohol ^and 41% ethylene glycol

0.5T% metflglikoi

0.51% diacetone alcohol

0.51% C ₁₂ _ig fatty alcohol sulfate

4.51% water.

The liquid provided the de-icing effect in 20-30 seconds. The wiped surface had a clean, even thickness. No refractive errors were observed. No post-icing was observed within 8-10 minutes.

Example 3

Aerosol composition:

901% isopropyl alcohol% ethylene glycol, ethyl glycol, diacetone alcohol (3: 1: 1 by weight)

0.51% dodecylbenzene sulfonate

0.5% by weight of triethylamine salt of N-acetylated iminodiacetic acid

4t% water.

The anti-icing, anti-icing, anti-refractive effect was the same as that of the solvent mixture described in Example 2. After two weeks of examining the corrosion of a used wiper blade in a rain chamber, it was found that the additive reduced the corrosion of the metal parts. No signs of corrosion could be detected at all.

Example 4

Aerosol composition:

901% isopropyl alcohol% ethylene glycol + methylglycol + diacetone alcohol (1: 1: 1 by weight)

0.5T% _C12 "i8 fatty alcohol sulfate

0.5% by weight of triethylamine salt of N-acetylated iminodiacetic acid

0.01% by weight of lemon fragrance

3.991% water.

The mixture was found to have the same properties as the solvent composition described in Example 3. The use of the fragrance removed the alcoholic odor of the product. It smelled nice.

Example 5

Aerosol composition:

901% isopropyl alcohol% ethylene glycol + methylglycol + diacetone alcohol (1: 1: 1 by weight)

0.51% Cj2_ zs zsfrfrfrohoh sulfate

0.5% by weight of triethylamine salt of N-acetylated iminodiacetic acid

0.011% lemon fragrance

0.011% acrylamide / acrylic acid copolymer (M: 580000)

3.981% water

When examining solvent combinations with the above composition, a

In addition to the test results of Example 4, it was found that when the original ice glass was contaminated or mud or other contamination was applied to the melted layer, the impurities used removed the impurities well and resolved them.

Example 6

The mixture consisted of:

45t% isopropyl alcohol% ethylene glycol + methylglycol + diacetone alcohol (1: 1: 1 by weight)

0.51% C ₁₂ _i § zsfralkoholszulfát

1.5% by weight of triethanolamine salt of N-acetylated iminodiacetic acid

0.011% pine fragrance

0.01% Acrylamide / Copolymer (M: 580,000)

47.981% water

The result of the examination was essentially the same

As described in Example 5, only minimal dissolution of the impurities was observed over time.

Example 7

701% isopropyl alcohol% ethylene glycol + methyl glycol + diacetone alcohol (1: 1: 1 by weight)

1.51% dodecylbenzenesulfonate

2.3% by weight of triethanolamine salt of N-acetylated iminodiacetic acid

0.011% lemon fragrance

0.05% Acrylamide / Acrylic Acid Copolymer (M: 350,000)

2.141% water

According to the study, after the mixture was used, no post-freezing was observed within 35 minutes. The other properties were the same as in Example 3.

Example 8

901% ethyl alcohol% ethylene glycol + methylglycol + diacetone alcohol (1: 1: 1 by weight)

0.51! C ₁₂ fatty alcohol sulfate _4g

0.5% by weight of triethanolamine salt of N-acetylated iminodiacetic acid

0.011% pine fragrance

5.991% water

The mixture provided the de-icing effect within 1 minute.

HU 204298 Β

Example 9

901% isopropyl alcohol% ethylene glycol + methyl glycol + diacetone alcohol (8: 1: 1 by weight)

0.5% dodecylbenzenesulfonate. ⁵

Triethanolamine salt of N- (acetylated iminodiacetic acid, 2% by weight)

0.011% lemon fragrance

0.051% acrylamide / acrylic acid copolymer (M: 820000)

5.241% water ¹⁰

With the use of the material, the cure did not subside for 5 minutes

Example 10.

Comparative studies, ¹⁵

Since no standardized method for defrosting ice was found in the international literature, we subsequently developed home standards for measuring the anti-icing effect and the contaminating effect. Efficiency (H) is disclosed in U.S. Pat. In accordance with Hungarian Patent Application No. 20, the standard test plate surface area which can be de-iced over time is characterized by a unit mass of ice-breaker:

Efficiency * »De-icing surface (cm) / [de-icing amount (g)-de-icing time (s)] 25

Test bases used for measuring efficiency

Stored at -18 ° C, the time required for the onset of re-icing was measured. The antifreeze effect was quantified with the minimum time required for this to occur [hours]. '30

191109 for cleaning effect. We have evaluated the following as a cleaning effect on a 1m ² street window surface that is contaminated for less than 3 months.

Anticorrosive EffectsToM 924-82. s. Measured according to the Hungarian Standard: the corrosion rate was determined on a test plate of steel, aluminum and copper. 40 Dimension: g structural material / m ² / day.

The flocculating effect of the additive used was determined as follows: 0.21% carbon black and 21% lubricant. We immersed a 200x200 mm glass plate in methyl alcohol solution containing fennel oil and allowed to dry in a dry place for 2 hours. The de-icing composition was then uniformly sprayed onto the surface and the vehicle was wiped with a liquid glass wiper once.

The comparative mers listed above were quantified using the following samples eh

L 811% isopropyl alcohol

91% ethylene glycol

10t% VFE

H. Sample No. 81 36 565. Japanese and U.S. Patent Nos. 1,434,142. >

According to descriptions in French

641% methanol

301% ethylene glycol ^y

5t% VTZ

0,2t% triethanolamine

0.81% corrosion protection (dipotassium hydrogen phosphate)

ΙΠ: 191109 according to Hungarian Patent

271% ethyl alcohol

501% isopropyl alcohol

4.51% glycerol

111% diethylene glycol monobntyl ether t% N-oleosarcosine salt

ARC. No. Exemplary embodiment is a composition

V. No. 2. Exemplary composition

VL Exhibit 3 Exemplary Composition

VH. A4.sz.kivitelipéldaszerintikompozíció

VIH. Az5.sz. Exemplary composition

IX. A6.sz.kivitelipéldaszerintikompozíció

X. Exhibit A7 Exemplary Composition

XL No. 88 Exemplary Composition

ΧΠ. A9.sz.kivitelipéldaszerintikompozíció

The results are summarized in Table L.

It is clear from the table that the compositions of the present invention are not only better in terms of individual effects, but overall better than those known hitherto.

Effective- pany [Cm2 / g.sec] Utánjegesedés inhibitory effect [Min] cleaner effect [medium/ / Good / Excellent]  anticorrosion flocculation effect [relative%] steel aluminum [G / m 2 day] copper L 0.48 5 good 0.2 0.08 0.05 40 H 0.60 10 medium 0.12 0.05 0.03 52 OJ 0.93 30 excellent 0.07 0.05 0. 03 50 ARC. 0.84 20 excellent 0.11 0.05 0.03 52 V 0.99 300 excellent 0.10 0.05 0.05 53 VI. 1.01 350 excellent 0.05 0.04 0.03 55 WITH 1.02 360 excellent 0.06 0.04 0.03 56 VIH. 0.99 410 excellent 0.05 0.04 0.03 88 EX 0.98 350 excellent 0.04 0.04 0.03 92

HU 204298 Β

Continuation of Table I

Effective- pany [Cm2 / g.sec] Utánjegesedés inhibitory effect [Min] Cleaner effect [medium/ / Good / excellent] anticorrosion flocculation effect [relative%] steel aluminum [G / m 2 day] copper X. 1.02 500 excellent 0.04 0.04 0.03 85 XI. 0.99 400 excellent 0.06 0.04 0.03 55 ΧΠ. 0.98 300 excellent 0.04 0.04 0.03 93

Claims (1)

CLAIMS 1. Compositions for treating glass surfaces having a de-icing and cleaning effect, comprising a monovalent alcohol, glycol, glycol ether, surfactant, water and optionally an anti-cosuric additive, perfume and water soluble copolymer of acrylamide type, characterized by containing from 1 to 30% by weight of a mixture of ethylene glycol, methyl glycol and diacetone alcohol (3-9) :( 1-4) :( 1-4). Compositions according to claim 1, characterized in that they contain from 1 to 10% by weight of a mixture of ethylene glycol, methyl glycol and diacetone alcohol.