DE1901040A1 - Product for cleaning and polishing - Google Patents

Description

Minnesota Mining and Manufacturing Company, Saint Paul,

Minnesota 55101, T.St * A.

Product for cleaning and polishing

The invention relates to polishing pads for cleaning, polishing or refurbishing surfaces.

For decades, sheep's wool polishing pads or caps have been used as the standard product, if painted or waxed surface should be polished to bring out its shine. Such pillows that are adaptable and j soft have been every other product for this! Consider purposes «

Sheep's wool pillows, however, have several inherent disadvantages. They are costly and subject like that most natural products variations that cannot be foreseen * The rough surface of the wool fibers and their inclination, matting under the application of pressure leads to pitting and "dragging" j which causes fatigue on the part of the performer. the

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bath

1901 ΟΛΟ

Even a small amount of moisture is present on the too polishing surface, which is often present, further exacerbates this problem.

The same properties also cause the clogging of the Sheep's wool pillows with dirt or wax during use, which in turn increases the tendency to sand. The distance Such dirt and wax is complicated by another characteristic of wool - its presence a leather surface on one side, which allows the easy j flow of water or other cleaning solution through the | Pillow is obstructed. Furthermore, hot water must not be used, so that the wool does not shrink, kink and i

deforms. !

Another disadvantage of sheep's wool is its tendency of the discs formed from it, leaving traces of the polishing movement, which may be due to the fact that the wool fibers align themselves concentrically to the axis of rotation of the driven cushion, or to the local formation of "knots", or the accumulation of dirt on the surface. Such traces are visually unsightly, how successful that Polishing whatever. May be in order to improve the shine.

As would be expected, numerous attempts have been made to provide a synthetic substitute for sheep's wool pillows find, however, such attempts have not been successful prior to this invention. An obvious substitute for Sheep's wool pillow consists of a disc that is cut from carpet fabric, but this essentially results the same problems as with sheep's wool.

The USA patent specification 2,958,593 (German patent specification; .- "," ν. 009808 / Ü243-

DAS 1 239 091) describes and claims a non-woven, resilient-porous mat consisting of randomly arranged fibers which are connected at those points where they cross and come into contact with one another. A relatively hard adhesive, such as a phenolic resin, is used to bond abrasive grains to the fibers. Of such a material cushion produced are zusammenpress- \ bar, adaptable, easy to clean, and have only overall [A slight tilt to grind ", however, they tend to pay off a v / oak surface during polishing and / or scratches to leave, however fine the abrasive particles used may be.

the hard resin itself leaves scratches on such surfaces, actually removing wax or The surfaces of hard synthetic polymer flooring - j surface finishes and similar materials j will. Even resins with a Knoop hardness of only 10 cause scratches like that.

In British patents 1 006 005 and 1014 297!

Abrasive articles similar to those in the U.S. patent identified above, with the modification; that an extremely soft adhesive (for example, with a \ Knoop hardness of 1 or 2) is used to secure the abrasive grains; to hold on to the fibers, the non-woven abrasive product being glued to a base [for the purpose of additional consolidation. In turn, pads made from such products tend to scratch and remove surfaces, however fine the abrasive particles may be. If the abrasive grains are omitted at all, the problem of scratches is eliminated, but the tendency of the: pad to be ground in even exceeds that of sheep's wool pads.

The present invention proposes products made of sheep.

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wool in terms of the ability to polish waxes shine to lend, are comparable, and those for cleaning and reconditioning the surface of hard Polymerisatübei- trains can be used without grinding them into powder. The products according to the invention scratch the one to be polished Do not rub or rub the surface, they do not show any traces of the polishing movement in the surface finish, and yet have far less sanding than sheep's wool pillows. The new products withstand loading with mass rubbed off the surface to be polished, and even those materials that may be in the pad penetrate, can be easily washed out. Also, both sides of the pillow can be used, thereby reducing its Usefulness is increased in an effective manner.

The invention is based on a resilient-porous non-woven mat, which consists essentially of tough, firm, resilient Fibers is formed, which in places where they cross and come into contact with each other, by means of a binder are connected, which contains a soft resin (for example, having a hardness of less than 3); insofar they resemble the Products of the UK patents referenced above. The resin in the binder is not only soft, but also soft still flexible, tough, resilient and somewhat elastomeric, with a particularly preferred resin consisting of a flexible polyurethane. The binder also contains about 10 to about 65 #, based on the total volume of the binder, of finely divided Mineral filler which has a Κηοορ hardness of not more than 150, preferably a far lower value. English red, the softest abrasive grain used in coated abrasive products, has an Κηοορ hardness of 600, and Calcium carbonate is a common extender for adhesives used in the manufacture of coated abrasive products will; it can therefore be seen that the mineral actually acts as a filler and not as an abrasive grain. Suitable

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BATH ORIGINAL

Fillers are e.g. calcium carbonate, kaolin and talc, j which is currently preferred. The filler makes it suitable about 1/6 to 1/2 of the volume of binder, the; preferred value is 1/3.

Synthetic fibers to which moisture no special Effect are particularly preferred for the practice of the invention, which are oriented polyethylene terephthalate fibers have proven particularly suitable. However, if desired, fibers which are themselves unsatisfactory can be are mixed with fibers of the type just described; for example can'Rayon fibers mixed with polyester fibers will. Fibers with a diameter on the order of 10-50 µ can be used, with fibers in the range from 20-40 / U are particularly preferred. In general is The finer the fibers, the lower the tendency to leave traces of the polishing movement, the lower the tendency towards grinding however, it is all the greater.

In order to better explain the product according to the invention, see the accompanying drawing is indicated, in which the single figure is a perspective view of a manufactured according to the invention Polishing pad.

In the drawing, the cushion is made of randomly arranged j

and intersecting fibers formed at the locations j

where they cross and come into contact with each other, j

are connected by means of a binder, which consists of a ■

soft, tough resin and a soft mineral filler such as j

previously described exists. j

Pillows of this type can be made using a conventional floor cover

surface processing machine can be operated, or they can!

on a 6.35 cm electric drill or one ^; another rotating polishing tool can be attached +

00 9.808 / 0243

BAD ORlOiNAL

It is of course seen that rectangular cushions are made and designed for reciprocating, swaying or tool heads moving in a circle can be used.

Although the evaluation of an effective polishing pad in er j

subject to a considerable degree of subjectivity are a number I.

of exams appropriate to job performance and other i

evaluate physical properties. For example:>

Tensile Test: This value should generally be greater than about 2.5 kg / cm in mutually perpendicular directions in the I plane of the cushion. ι

6Q ° gloss value: The Interim United States Federal Specification No. 00-P-0040b (GSA-FSS) enables certain standard values that relate to the production and testing of polishable V / axles with a high proportion of Carnauba V & hs. According to this; Test is a disc with a diameter of about 10 cm; an etv / a 3 mm thick black asphalt tile through brush! Application with an aqueous emulsion, containing 16 ίΌ solids, a polishable wax overspray, a u ^ unde ^! left to dry and attached to the fixed rotating receiving part; attached to a slate abrasion testing machine. A floor preparation cushion with a diameter of about 10 cm is attached to a second rotating mounting piece: and placed over the tile disc so that a little more over the '■. Overlap half of the diameter. The disc and pad are then rotated 200 times at 250 rpm under an applied force of 2.27 kg. The brick is subjected to a gloss value measurement at 60 ° in accordance with ASTM Test Specification No. 141 subject. The gloss value wanted to be at least 30 *

Abrasion characteristics. A black asphalt tile with a diameter of about 10 cm is coated with about 25 mg of a hard acrylic polymer finish (e.g. "Step Ahead",

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BATH

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wrote stratified every order. j becomes visuel ] sates should ί little or ^;

Bin loop . '43 cm is ι tric, whose current-loaded to is measured hard footboth at c The amperes: 1.2 increase to shows one ampere more ampere more

j Although it is considerably purifying, it is different

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o. C. Johnson and Son, Inc.) and the be-.jchiefer test above subject. The weight of the seal is eaten before and after the test and s of powdery flooring debris. The weight loss of the polymerietwa Do not exceed 4 mg and it should only be visible in white powder.

. A cushion with a diameter of approximately, attached to the drive device of a conventional electrical floor processing machine, in -eis an ammeter with a reading of 6.8 is interposed. The arapere number n while the pad to be tested is moved over an "en polymer coating, with readings of Luge &." 3 also being taken when the pad is tilted to move it to: aiiLK en. 1 should siiij is desirable if not more inclined than venn • d ^ e Ma. ■ <hine. in contrast is here- I with bchafsvtullkissen provided machine about ^1.3! in unoelasteten Sustand in a level position and 2.6 xs steady state in -nbelc- in an inclined position.

the Hfstel. applicable to products according to the invention pielra-m too! ^ ssig, the following should

Is ₁ .ie! · :, do not limit the fulfillment. If not, ί - see · .i all parts by weight.

ie ^

üine feaeri joi- ^ at, nit; verv / above bahn was on a hando-. Y / ebber — Masc .ne unier KK ^ ending of the χπί individual in the UoA-; Patent document - 2,958,593 DAiJ 1 239 Ü91) described working method, namely from 15 denier (about a diameter of 4u / u) marks and 3.8 era long ruffled oriented

009808/02 ^ 3

Polyethylene terephthalate fibers. The web was about 5 cm thick and possessed a weight of about 28 mg / cm of the web.

A mineral-filled binder that is about 30 Vol soft mineral filler was made by mixing and hardening the following components:

Parts by weight

Ethylene glycol monoethyl ether acetate

Liquid polyester resin with a molecular weight of 1800-2000, an equivalent weight of about 900, and a hydroxyl number of about 63 (commercially available available from Rohm & Haas under the designation "Paraplex" U-148) 618

Slightly branched polyester with terminal OH groups, formed by the reaction of adipic acid, hexanetriol and Butylene glycol, commercially available from Mobay Chemical Co. under the designation "Multran" R-12

Finely divided silica viscosifier, commercially available from Godfrey L. Cabot, Inc., under the designation "Cab-O-bil" M-5

Λ-thylace tat solution with 75 # solids des Reaction product of 1 mole of trimethylolpropane and 3 moles of toluene diisocyanate, commercially available from Mobay Chemical Co. under the designation "Mondur" CB-75

Talc, 46 / U, maximum Knoop hardness about 12

Ethylene glycol raonoethyl ether acetate in sufficient quantity to reduce the viscosity to 2600 Cp, i.e.

1690 1980

The fibrous web described in the previous paragraph was then passed between a pair of corrugated rubber rollers, 20 cm in diameter, negatively spaced, with the lower roller in a bed of liquid

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speed (26ÜO Cp) of the mass described above rotates, whereby about 74 rag / cm, based on dry weight, are applied. The coated web was about 15 minutes heated to 160 ⁰ C, in order to implement the Isooyanat adduct with the polyester and to form an elastomeric urethane, wherein the final thickness of the web was 2.9 cm approximately. (When the talc was omitted and the mass was made into a "pie" shape and cured in the same way, the tensile strength of the cured mass was 376 kg / cm with an elongation at break of 35 ⁰ JOf, being the Knoop hardness below 1). The tensile strength of the sheet was 14 kg / cm width in the longitudinal direction and 11 kg / cm width in the transverse direction.

A pillow with a diameter of 43 cm was hardened from the Bound web punched out and compared to a conventional sheep's wool cushion in terms of the polishing effect a polishable standard floor wax tested. It was found, that the appearance of the polished wax was similar in each case. That of the product according to the invention this However, the amount of loops shown in Example 1 was significantly less than that of the sheep's wool pillow, the increase being; the amperage compared to the unloaded state is 0.2 level position or 0.8 in the case of an inclined position. Furthermore, the pillow could be easily washed and cleaned when it may have absorbed so much wax that its effectiveness was impaired. In contrast, let the sheep's wool pillow is extremely difficult to clean, and the treatment with water even caused more significant matting than before.

Example 2

A resilient-porous, nonwoven web was made in the manner described in Example 1 from 6 denier (diameter about 25 / u), 3.8 cm long, curled oriented poly-

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-10- I.

Ethylene terephthalate fibers manufactured. The track was about 4.4 cm!

thick and weighed 17 mg / cm.

A soft mineral-filled binder mass was · through Mixing the following ingredients prepared:

Parts by weight i

Ethylene glycol monoethyl ether acetate 8

Saturated polyester with an OH number of 47,

commercially available from Mobay Chemical Co.,

under the name "Multron" R-68 15;

1,2,3-hexanetriol 0.8 _;

"Mondur" CB-75 as in Example 1 13.1;

Xylene 8

Talc as in Example 1 25.5

"Cab-0-Sil" M-5 as in Example 1 0.5

The web described in the previous paragraph was made into that described in Example 1 with the above binder composition Bound in a manner applying a total of 42 mg / cm (dry weight). The binder was used in the in Cured in the manner described in Example 1, the final thickness being 1.3 cm.

Cushions punched out of the bonded web of this Example 2 were found to be eminently suitable for cleaning Polymethyl methacrylate ("Plexiglas") - aircraft windows, namely in an effective way without leaving scratches. Cleaned using common cleaning and polishing agents these cushions also oxidized and discolored aluminum aircraft bodies, Common polishing compounds could also be used in conjunction with these pads to make automotive paint kits

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polish, and the pad itself was extremely effective in producing a high gloss without leaving any traces of polish. to show movement, as is the case with surfaces that have been polished with sheep's wool pillows.

Example 3

Example 1 was repeated, with the modification that the talc was replaced by calcium carbonate (Knoop hardness about 135). The pillow felt both harder and stiffer than the pillow of Example 1, but its performance was comparable.

Example 4

Example 1 was repeated, with the modification that the amount of talc was increased in such a way that it amounted to 65 v> of the total volume of the binder. The product was extremely effective in its polishing effect and exhibited less grinding than any of the above-described products. However, the tensile strength was somewhat less than what appears to be desirable.

If the amount of talc is reduced to 10 <$> of the total volume of the binder, the tendency to abrading increases beyond what is considered desirable and the ability to give a polishable wax a satisfactory gloss is reduced .

Example 5

! Example 1 was repeated with the talc replaced by kaolin clay

j (Knoop hardness about 60), in which 12-18 # of the partial

! chen a mean diameter above 5 / U and 62-68 ^c h

■ had a diameter of less than 2 y _U. The product felt

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similar to that of Example 3, and the obtained Results in terms of its performance were comparable.

Example 6

The example was repeated using the 15 denier polyethylene terephthalate fibers replaced by 15 denier nylon fibers. The hardened bonded web was slightly less resilient-porous than that of Example 1, and pillows punched therefrom felt hard and somewhat stiffer.

Example 7

Example 1 was repeated with the urethane resin in the binder by a comparable amount of a 44.5 # aqueous emulsion of a thermosetting, self-crosslinking hard acrylate polymer ("Hhoplex" HA-24, available from Rohm & Haas) was replaced; one made from this polymer The pie-shaped body has a Knoop hardness of 1.3 after hardening. The pillow was suitable for polishing, was but not as durable as the pillow made according to Example 1.

Numerous modifications can be made to the invention described above without departing from the spirit thereof. For example, one can increase the strength of the non-warped webs by needle tacking prior to binding raise. Similarly, the two sides of the web can be treated differently, e.g. to obtain a product, the one function both for polishing with a cleaning compound and for finally imparting one Exerts shine. To increase the amount of detergent that one side of the pillow can hold on to, it is equally possible to attach flake-like fibers to this

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bring. To the hydrophilic nature of a pillow that is used along with aqueous emulsions of polishing compounds is to be improved, one side can be treated with modified polyvinyl alcohol.

-Patent claims-

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Claims (3)

[B. Specimen copy! D ^ ^ htgeändwer den -14- Claims Soft, resilient, compressible polishing pad, the surfaces made of aluminum, paint, V / axis, plastic and the like. to give a high gloss and polymethyl methacrylate sheets able to clean, always with a low leveling effect, without scratching the surface, without significant amounts of To remove base material and leave no traces of the polishing movement on it, with the cushion in combination a resilient-porous, non-woven mat with an extremely high pore volume, which essentially consists of curled, tough, strong, resilient fibers, e.g. oriented polyethylene terephthalate fibers, with a diameter of the order of 10-50 / U, has, characterized in that the fibers at the points where they cross and come into contact with one another by means of a filled one Binder are connected, which a flexible resin, for example a polyurethane, with a Knoop hardness of less than 3, and about 10 ° h to 65 $>, preferably about 1/3, based on the total volume of the binder, of a finely divided Minjäferal filler, z.3. Contains talc with a Knoop hardness of no more than about 150. 2. Cushion according to claim 1, characterized in that the one surface of the cushion has been treated so as to be able to accommodate it ability for aqueous emulsions of polishing compounds too! raise. 009808/0243