DE1519255A1 - Cleaning and scouring agents - Google Patents

Description

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The present invention relates to a cleaning and scouring agent, which is particularly useful in the household for cleaning pots and pans Fußbüdenpflegc should be used where the cleaning agent should have a certain abrasive effect, e.g. to Attached in pots or special smear marks on the Eliminate floor. In addition, due to its grinding effect, it can be used as a universally applicable Iland abrasive be used for industry and household

An abrasive effect arises in that a _f suitably secured, stony, sharp-edged material abrasive grain called by! Friction generated on a workpiece a machining operation that the F "FFECT increases the larger the depth of cut for the same amount of force is · g ^ p ORIGINAL

An increase in the sole effect with the same amount of effort . depends on »the extent to which the abrasive grit corresponds to the one to be sanded Material - called the grinding object - dodged Jo more rigidly and the abrasive grain is guided more firmly against the object to be sanded, the greater the grinding effect with the same amount of force. According to this, a ceramic-bonded abrasive grain has a high abrasive effect, one that is bonded to fabric, paper or vulcanized fiber Abrasive grain has a medium abrasive effect and an abrasive grain bonded to foam or non-woven fabric one low sanding effect,

The grinding effect is also due to the hardness of the binding agent affects with which the abrasive grain on the backing “The harder the binder, the larger it is also according to the above principle, the grinding effect.

Thus, with curable binders (e.g. phenolic resins, Epoxy resins and polyester resins) higher grinding effects than with thermoplastic Ilarzen (PVC, polyacrylic acid ester and Eutadiene-styrene copolymers)

There are now cleaning and scouring agents in the form of a fiber fleece, in particular made of plastic fibers, known on its Fibers abrasive grain is applied by means of binders, whereby the layering process is carried out on both sides of the fleece

In the case of someone who is trained in this way for use in the household Fiber fleece is used as the abrasive grain to achieve a good grinding effect through a very hard binder with a knoopschen hardness of about 13 and more bound »this product is highly porous, but has a relatively short service life and very low tear resistance and is therefore used up quickly.

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In order to remedy these disadvantages, it has already been proposed to apply the iron to such a fiber fleece with a considerably softer binder, the Knoop hardness of which is not more than 6. In this ^T, 7eise Although the tensile strength, the grinding effokt but decreases increases noticeably ago al) · Hs i'st Dalei only possible to achieve even a sufficient grinding effect by the fact that the number of abrasive grains and the binder to "share increased considerably this way but there is, on the other hand, the disadvantage that the product becomes dense and lumpy, tends to smear instead of grinding and is therefore used by the consumer only by necessity.

Such a product is relatively heavy and not very absorbent and requires a sufficient sanding effect ■ considerably more effort.

The present invention is now intended to provide the advantages both known embodiments are combined to form a to produce high-volume, absorbent, solvent-resistant and boil-proof scouring fleece with sufficient durability has a good sanding effect and yet is so supple and elastic that it can be used without difficulty Clean, clean and polish conceivably shaped materials or give them a matt finish.

To solve this problem, the abrasive grain is bonded to the fibers in a very special form of a type of bond made, which has already been proposed for other abrasives, namely the type of bond in which the binder layer of the abrasive grain and the size coat have different hardnesses. This per se known method but can only achieve the effect according to the invention

. in the farm on the original cleaning and abrasive detergents

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BATH ORIGINAL

come to use in which the grain with a softer binder bound on the fiber and then with a harder over-size layer is provided.

Accordingly, the cleaning and scouring agent according to the invention, which is in the form of a fiber fleece, on the fibers of which abrasive grain is applied by means of binders, consists of a softer binder for the grain adhesion and a harder after-size layer which covers the grain layer. This measure creates a stable, absorbent and lightweight product that grinds well, with which the housewife can achieve the desired grinding effect with the least possible effort. Embodiment ν

A high-volume, manufactured according to the aerodynamic principle Random fiber fleece made of 15 denier well crimped nylon fiber, 40 mm staple length, weight 96 g / φη, thickness 6 to 8 mm pre-solidified state, is sprayed in a spray system with 60 g / qrn of an epoxy resin-polyaminoamide mixture. Recipe:

8, - kg of a polymeric glycidate, made from 4,4 ' Dihydroxydiphenylpropane (bisphenol A) and epichlorohydrin (Gft 0185 v. Society for tar utilization),

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drawn in 4.8, - kg MEK,

hardened with
12 kg of a polyamidoamide (Versamid 115, Schering, Berlin) dissolved in 10.5 kg of xylene

7.2 kg MEK (methyl ethyl ketone)

Then 275 gAm aluminum oxide grains, according to the FEPA standard size grain no. 240, are scattered into the noch.feuchten binder by the gravimetric scattering method. The material is then fed to an oven and about 10 min. At 13O ⁰ C dried. After drying, the opposite side is sprayed as described above,

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sprinkled and dried.

This is followed by the spraying of 35 g / <lm of a Polmirethane binding agent. 3

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10, - kg of a polyester containing hydroxyl groups, (Desmophen HOO from Farbenfabriken Bayer) solved in

13, - kg IJSSL (ethyl ethyl ketone),

13, - kg xylene,

13, - kg of ethyl acetate and

13.8 kg of a polyisocyanate (Desmodur L 75 #ig in

Alkylazebat dissolved from Fa ₀ Farbenfabriken Bayer) further diluted with

4, - kg toluene «

Mach of the spray-drying of the binder is carried out at 110 ° - 13O ⁰ C, 10 ilin *, in a suitable furnace '.

The following test shows the durability of the cleaning and scouring agent according to the invention:

Two strips of 50 280 mm are 1 3td. long in power with "LABEL FOR convey water boiled at 80 to 9O ⁰ C. Then one of the two strips is fastened to a base plate with a holding device · The other strip is fastened to a frame weighing approx. 3 kg and placed on the strip fastened to the base plate Carriage with the strip arranged horizontally in the transverse direction to the lower strip and moved back and forth, the number of strokes counted until the two abrasive fleece strips are sanded through.

This gives a good statement about the service life of the product

The comparison between three products has now been drawn:

Prod »1 A well-known scouring fleece with a soft binding agent manufactured·

Prod. 2 A well-known scouring fleece produced with a hard binder · '

Prod. 3 A "scrubbing fleece with soft and then with hard

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Binder prepared according to the invention. Prod · 1,400 strokes only slightly destroyed. Prod * 2 160 ⁿ destroyed
Prod. 3 350 ^H destroyed

This comparison shows the superiority of Prod. I in the service life. However, this product has an insufficient sanding effect.

Product 2 has an abrasive effect, but is after 160 Strokes destroyed, whereas Prod. 3, despite the high stability and the other good properties of Prod. 2, had a high one Grinding effect achieved.

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Claims (1)

Claim Cleaning and scouring agents in the form of a fiber fleece the fibers of which abrasive grain is applied by means of binders, characterized in that a softer binder the grain adhesion "causes and a harder Nachawfeleimschicht covers this core layer. 909822/1259