DE1265899B - Coating agent based on organopolysiloxanes - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

C09d

German class: 22 g -10/01

Number:
File number:
Registration date:
Display day:

1265 899
D38224IVc / 22g
February 23, 1962
April 11, 1968

The previously known furniture and floor polishes, waxes and / or various others Containing constituents usually have at least one disadvantage. So it can be B. be difficult with that To achieve a high gloss. Others are insufficient or difficult in terms of their sliding resistance to remove again. On others, however, water stains easily form.

Disadvantages, as they have been described above, also adhere to the previously known polishing agents, the Contain organopolysiloxanes. So requires z. B. a well-known, surface-protecting polishing agent, containing low-viscosity and high-viscosity difunctional Organopolysiloxanes and a resinous organopolysiloxane incompatible with these two organopolysiloxanes, Re-shine to achieve a high gloss; the coatings made from it are due to the content of low-viscosity difunctional organopolysiloxanes is not very slippery and because of Their resinous organopolysiloxane content is difficult to remove again. One too already known polishing agent, containing vinylmethylpolysiloxanes, is because of the tendency to polymerize the vinyl groups are also difficult to remove again; furthermore, this polishing agent is with regard to the gloss values that can be achieved therewith are inferior to the polishing agent according to the invention.

The easily and uniformly applicable, dries to glossy coatings according to the invention Agent, on the other hand, combines the property of forming a high-gloss, permanent protective coating on the without wiping or rubbing surfaces covered with it, especially wooden surfaces, which thereby retain the natural wood grain is effectively highlighted and scratches and other damage are covered with the repellency of stains caused by water and many other substances, high slip resistance and easy removability by means of a solvent. Even after multiple applications of the No thick layers are formed by means of this.

The coating composition according to the invention, which dries to give glossy coatings, essentially consists from a solution of a monocyclohexylsiloxane polymer in volatile, liquid organic solvents.

The monocyclohexylsiloxane polymers which can be used according to the invention can be fully or partially condensed. The fully condensed polymers are referred to as cyclohexylsilsesquioxanes. These polymers are soluble in organic solvents and have a three-dimensional coating agent based on
Organopolysiloxanes

Applicant:

Dow Corning Corporation,

Midland, me. (V. St. A.)

Representative:

L. F. Drissl, lawyer,

8000 Munich 23, Clemensstr. 26th

Named as inventor:

Daniel R. Pail, Midland, Mich. (V. St. A.)

Claimed priority:

V. St. v. America March 2, 1961 (92 750) - -

nal structure. Methods of making them are well known. In general, they are from the hydrolyzate of a silane of the general formula C ₆ H ₁₁ SiX ₃ , wherein X is a. easily hydrolyzable group, e.g. B. is an alkoxy group or a halogen atom, prepared by refluxing with an alkali metal hydroxide. All hydroxyl groups are removed with the formation of three-dimensional cyclohexylsilsesquioxanes.

However, the monocyclohexylsiloxane polymers can also contain a substantial number of condensable ones Contain groups, such as hydroxyl and alkoxy groups, which are not connected to the SiOSi bonds or cyclohexyl groups saturated Süiciumvalenzen are bound. In this case they have monocyclohexylsiloxane polymers essentially a linear rather than a three-dimensional structure. Other organic groups, such as aliphatic and alicyclic hydrocarbon radicals which differ from the cyclohexyl radical as well as phenyl groups can also be present in small amounts.

There is no limit to the molecular size of the monocyclohexylsiloxane polymer as long as it is Polymers are soluble in organic solvents.

The coating agent according to the invention can optionally be in the solvent at room temperature additionally contain at least partially soluble wax. Although without the use of Growing a high gloss is achieved, namely like it

809 538/531

3 4

For some purposes it may be appropriate to have a small, hard, permanent coating. The strongest shine

Use a lot of wax, for example. B. the hardness is determined by applying the solution with linear

to increase the coating. Bee-painting movements are achieved as waxes. Strong gloss with low

wax, whale rat, paraffin, Japan wax and polyvinyl is thicker by applying with a circular

octadecyl ether preferred. Waxes are achieved in the 5-shaped smear. It's not necessary,

Coating agents according to the invention are also used, so the coating after application to achieve

their amount is preferably 0.1 to 5% by weight to wipe or rub mirror finish. In the

parts based on the total weight of the solution. The use of wax can wipe away the shine

Any amount of wax that goes beyond this can make it stronger.

affect the gloss of the coating. In general, by applying the above-described solutions If the amount of wax increases with the content of the agent, the coating can easily be removed again. Solution of monocyclohexylsiloxane polymers. This is probably due to the fact that the

Any volatile, liquid organic solution monocyclohexylsiloxane polymer on the conveying agent cannot harden completely in the surface drawn in the coating composition according to the invention. It is Be used. It may of course not be necessary for the 15 to be treated to remove the coating before a Do not damage the surface. For example, another coating can be applied as it does not have one For wood that has not been varnished, strong solvents, such as cloudiness on the surface even after application Leaves methylene chloride or other halogenated carbon layers behind. Those with the invented · » Use hydrogen. Solvent of this type according to coating agent treated surfaces however, should not be used for veneered, varnished or with so can be washed with soap and water without Any other painted surface removes the coating or the gloss to be used. Preferably the solvent should be adversely affected.

be sufficiently volatile to be in an acceptable die coated with the agent according to the invention

Time to evaporate after application. Surfaces have besides those already mentioned

The solvent should be present in an amount sufficient to make the coating light, slightly repellent to dust particles and in the form of thin, evenly distributed films, very abrasion-resistant. The coating is heat and can be applied. Is the solution too flame-resistant and physiologically harmless? This triert, the application is slightly uneven and the coating agent according to the invention remains a streaky coating for a very long time. Is a lot of solution and is resistant to cold. It is especially available for wood footing, it takes a long time to dry, is suitable for floors and furniture, but can also be used, for. B. and it may be necessary to apply the solution several times on other wooden surfaces, terrazzo, asphalt, tiles to achieve a high gloss. The exact and polyvinyl resin floors, car paints, metals, leather amount of solvent in relation to the poly and on painted surfaces siloxane depends on the particular solvent to be used.
respective monocyclohexylsiloxane polymers and thereof

whether other components, e.g. B. wax, used for example
will. Preferably 1 to 20 parts by weight,

in particular 2 to 15 parts by weight, monocyclohexyl- In this example, solutions according to the invention are

siloxane polymers to 100 parts by weight of total solution 40 gene, which is a monocyclohexylsiloxane polymer in

used. contain different concentrations, with one

A solvent should be used, very good previously known solvent wood flooring

worindasMonocyclohexylsiloxanpolymerebeiZimmer- polish based on a 5 ^o / ^s oig solution of a mixture

temperature is soluble. In addition, at least one of waxes and organic resins should be considered

Part of the other substances used in each case, such as 45 their gloss properties and slip resistance

Wax, be soluble or dispersible therein. Matched.

Alternatively, the solvent can be heated to. Solutions of cyclohexylsilsesquioxane were used

to bring about a rapid solution. in »V.M. & P.-Naphtha ", i.e. one at 93.3 to

Suitable solvents are, for example, terpene fractions from USA petroleum boiling at 162 ° C

tin, "V.M. & P.-Naphtha «(at 93.3 to 162 ° C boiling 50 2, 5, 10 and 15 parts by weight of siloxane, based on

Fraction from USA petroleum), white spirit, Stoddard 100 parts by weight of solution, each on unheated

Solvent (cf. R ö m ρ ρ, »Chemie-Lexikon«, Stuttgart Oak plywood several times by means of a piece of tree

1958, column 4217/4218), kerosene, ethylene glycol wool gauze painted on linearly. After each application

monoethyl ether, diethyl ether, n-butyl ether, / S-chlorine - the solvent was allowed to evaporate. The to be

Ethyl ether, isopropyl alcohol, 2-ethylhexanol, n-Bu- 55 equivalent previously known commercial polish was applied to the

tyl alcohol, 1,1,1-trichloroethane, cyclohexane, decane, same wood applied in the same way,

Cyclohexene, toluene and xylene. Preferably left to dry and polished,

aliphatic and alicyclic hydrocarbon As can be seen from the comparison of the force required

Solvent used. was to get an item about the coatings

Other additives common in polishes, such as shellac, 60 draw, showed that the sliding resistance of the cyclohexyl

Fragrances, pigments, soluble dyes, pest silsesquioxane coating at all concentrations

and bactericidal agents and additives higher than that of the coating from the previously known

enable even application, can be done with polish,

be used. ^ The gloss of the coatings was checked after each

The coating agents according to the invention can be applied to the solution with a Gardner 60 ° mirror

the surfaces to be treated in any way, e.g. B. Glossmeter according to A. S.T.M. D 523-49T, by

by spraying or brushing. Determination of the amount of light passed through the test

After the solvent has evaporated, there remains an area at an angle of 60 ° to the vertical

light beam incident on this surface is reflected, measured. A polished black one Glass with a setting of 94 was used as a reference.

Gloss values

Polish type

concentration
in percent by weight,

calculated
on total solution

Number of applications
1 2 13

Cyclohexylsiloxane.
Commercial product ..

2
5

10

15th

17 to 15 to 17

18 to 20 to 20 to 30
30 to 36
45 to 58
52 to 60
35 to 40

30 to 40
35 to 42
55 to 60
55 to 65
38 to 43

32 to 40
38 to 45

57 to 65

58 to 65
35 to 40

40 to 43
42 to 47
58 to 65
63 to 72
45 to 55

The siloxane coating agents described above in this example also result on painted surfaces, car paints as well as on varnished and varnished wooden surfaces a permanent high-gloss coating.

If the monocyclohexylsiloxane polymer concentration in the »V.M. & P, -Naphtha «increased to 20%, see above the solution is particularly suitable for covering floors.

Similar results were obtained with the respective use of turpentine, white spirit, Stoddard solvent, kerosene, ethylene glycol monoethyl ether, ethyl ether, n-butyl ether, ß- chloroethyl ether, isopropyl alcohol, 2-ethylhexanol, n-butyl alcohol, 1,1,1-trichloroethane, cyclohexane, decane , Cyclohexene, toluene and xylene in place of the "VM &P.-Naphtha" achieved.

Also the coatings of a monocyclohexylsiloxane polymer with a considerable number of Hydroxyl groups, which in the concentrations given above in »V.M. & P.-Naphtha "was solved, had, as well as those from the various concentrated cyclohexylsilsesquioxane solutions that an additional 0.1 to 5 percent by weight, based on the ao weight of the total solution, of beeswax, paraffin, Japan wax, whale rat and polyvinyl octadecyl ether contained excellent gloss values.

Example 2

as A 5% solution based on the Weight of the total solution of monocyclohexylsiloxane polymer and »V.M. & P.-Naphtha «. This solution was applied several times to unheated oak plywood with a piece of cotton gauze applied circular rubbing, creating a particularly thin coating. The slip resistance was after excellent every application. The gloss obtained on the surface was as indicated in Example 1 Measured way.

Gloss values

Number of applications 2 I.

17 to 25

32 to 44

40 to 53

33 to 45

40 to 48

48 to 51

Comparative experiment

Solutions of cyclohexylsilsesquioxane (C) in "VM &P.-Naphtha", ie a ^{fraction from USA petroleum boiling at 93.3 to 162 °} C., with the various concentrations given in the table below, and solutions with one viscosity were used of about 350cSt / 25 ° C having mixed polymer (V) of 97 mole percent vinylmethylsiloxane and 3 mole percent trimethylsiloxane units in the above-described solvent with the different concentrations also given in the following table, each applied once in equal amounts to black-lacquered iron sheet or oak boards. After drying, the gloss was measured.

Tabel

Concentration in shine
values Type of
overdone
Subject Organopoly
siloxane Weight percent,
calculated on
Total solution 90 Sheet iron C. 2 77 Sheet iron V 2 89 Sheet iron C. 4th 81 Sheet iron V 4th 90 Sheet iron C. 8th 83 Sheet iron V 8th 90 Sheet iron C. 12th 83 Sheet iron V 12th 45 Oak wood C. 12th 33 Oak wood V 12th

Apart from the fact that the polishing agent according to the invention by its freedom from undesirable Resin-inducing vinyl groups is superior to the comparative polishing agent it also, as the above figures show, higher gloss.

Claims (3)

Patent claims: 1. Coating agent based on solutions of organopolysiloxanes in a volatile, liquid, organic solvent containing as essential organopolysiloxane constituents Monocyclohexylsiloxane polymers. 2. Coating agent according to claim I ₅ consisting essentially of 1 to 20 parts by weight of monocyclohexylsiloxane polymers and 80 to 99 parts by weight of solvent. 3. Coating agent according to claim 1 and 2, containing ¹ additional 0.1 to 5 parts by weight, bözögöü based on the weight of the solution, of waxes which are at least partially soluble in solvents at room temperature. Considered publications:
German Auslegeschriften No. 1 027 825, 037 043, 046 225. 809 533/531 4.68 © Bundesdruckerei Berlin