JPS6239700A - Product suitable for surface wiping - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an abrasive product suitable for non-marring cleaning of kitchen and bathroom surfaces.

The product may have the form of a sheet, sponge or knot, for example, and has a mild abrasive character.
ity) and the ability to deliver cleaning agents in a controlled manner.

A wiping product with a "sandwich" structure carrying a mild abrasive on one side and containing a concentrated detergent core is disclosed in European Patent No. 664,638 (Uni 1ev).
er).

In the present invention, Polymer II is capable of absorbing and retaining at least 3 Ii of hydrophilic liquid, capable of releasing at least a portion of said liquid upon application of manual pressure, and capable of absorbing the liquid again upon release of manual pressure. A surface wipe having at least one support layer carrying a polymeric material such as
We provide products suitable for cleaning (wiping 5 surfaces). The products of the present invention further include hydroxyalkylene (HEAc) products of alpha, beta unsaturated carboxylic acids. The outer portion, which constitutes the wiping surface and which provides strength to the product and holds it in a cohesive form, is hereinafter referred to as the su-bstrate. Support materials include, for example, wet strength paper, non-woven fabrics, woven fabrics, knitted fabrics, natural sponges, and synthetic sponges.

The support material must be flexible, water permeable and have high wet strength, preferably having moderate absorbency and a soft feel.

The inner part of the product, hereinafter referred to as the core, is completely surrounded by the support material. The core of the product is a surfactant that can be released in a controlled manner.
It consists of a surfactant trapped within the JX material and a material that can reversibly absorb and release large amounts of liquid.

A preferred form of the product of the invention is a sheet laminate in which the core is sandwiched between two support layers. The support layers are joined to each other at their peripheral edges and at a sufficient number of other locations to prevent misalignment. For this purpose, European Patent No. 0066463B (
Grid junctions as described in Unilever
bonding or point bonding as described in EP 0 112 654 A (TJni 1ever). Bonding may be effected, for example, by heat sealing or adhesives.

When the product has the shape of a sheet-like laminate as described above, the support layers may be made of the same material or may be made of different materials. In a first preferred embodiment of the invention, one layer carries the abrasive and the other constitutes the soft absorbent surface.

Advantageously, the abrasive is mild.
and may consist of particles of synthetic polymeric material, such as polystyrene, polymethyl, methacrylate, or especially polyvinylchloride. BDHLtd.

Commercially available high molecular weight (2 million) emulsion polymerized polyvinyl chloride has been found to be particularly preferred.

Other suitable polymeric abrasives are U.S. Pat. No. 3,382,058
American Cyanamid. Abrasive particle size is usually at least 50μ
m, and if it is smaller than that, the particles will not remain on the surface but will enter the support. There is no upper limit to this particle size. Generally, abrasiveness increases with particle size, so large particle sizes should not be used in the case of hard abrasives, but particles on the order of micrometers used in the product of this invention can cause scratches. I never add .

The selection of particle size depends on the method of application of the abrasive to the support, as discussed below.

The abrasive particles may be attached to the support by a suitable adhesive. The adhesive is preferably of the latex type.

In addition to the aforementioned U.S. Patent No. 3,382,058, U.S. Patent No. 3
No. 451758 (Procter k Qamble)
and U.S. Pat. No. 3,175,331 (Union Car
bide Com-pany) Several examples of suitable adhesives are listed in each specification. The adhesive must exhibit elasticity, flexibility after curing, and be resistant to deterioration due to exposure to hot water and detergent compositions. Preferably, the adhesive after curing softens somewhat at the temperature of the hot water so as to increase the flexibility of the article of the invention during use. For example, thermoplastic materials with a glass transition temperature of less than 50C, preferably less than 400C, especially less than 30C are preferred. Particularly preferred adhesives are vinyl acetate homopolymers and copolymers and thermoplastic acrylic polymers. Good results have also been obtained using polyvinyl acetate, polybutyl methacrylate and styrene/butyl methacrylate copolymers. A specific example of a preferable material is Vinyl Product.
Manufactured by tsLtd (D5 Tex adhesive vinamul
(Trademark) 7172.

In a second preferred embodiment of the invention, both supports are abrasive, but one support layer carries a more abrasive agent than the other support layer. In use, the more abrasive side is used first to remove dirt from the surface to be cleaned, and the more gently abrasive side is used to complete the cleaning operation.

In both the first and second preferred embodiments described above, the abrasive (whether soft or not) preferably occupies 70 inches or less of the surface area of the support.

In this way, the use of hard abrasives does not detract from the soft, flexible cloth-like feel of the product.

Surface coverage by abrasive
ge) is preferably 55% or less, and 25 to 50 ge is particularly suitable. It is preferable that this surface coverage is made smaller as a harder abrasive is used.

Adhesives and abrasives may be applied to the substrate by any suitable method, such as dipping, impregnating, spraying, or coating. Printing methods are particularly suitable for achieving a favorable partial adhesion to the surface, of which screen printing is preferably used.

Screen printing can be used to print adhesives and abrasives into any desired number of turns, such as multiple mutually parallel discontinuous lines, zigzag nine turns (broken weave), etc.
It can be easily deposited according to a pattern such as a pattern (puffern) or a grid of a plurality of intersecting continuous lines. The line thickness of the /♀ turns can be varied to obtain different abrasiveness by using different sized printer screens.

If screen printing is used, it may be necessary to add a thickener to the adhesive/abrasive dispersion to obtain a sufficiently thick slurry. Suitable materials include, for example, polyvinyl alcohol, carboxymethylcellulose, xanthan gum and gum arabic. Preferred thickeners include, for example, A11ied Co11oid
There is Viscalex (trademark) HV 30 manufactured by S. Advantageously, the dispersion furthermore contains colored pigments so that a visually appealing print pattern is obtained.

When the abrasive is applied by screen printing, the maximum usable effective particle size of the abrasive has been found to be about 250 μm. Larger particles will be separated from door to door by the hublinting screen. However, polymer abrasives undergo a certain amount of agglomeration during the printing process, so that after printing, particles (agglomerates) much larger than the above particle size can be present on the surface of the support and emitted while receiving the particles. It is characterized by being composed of a surfactant in a form that can be used as a surfactant and a highly absorbent substance.

Controlled release of the surfactant can be achieved by entrapping the surfactant within a solid carrier material such as a matrix of polymerized products of hydroxyalkyl esters of alpha, beta unsaturated carboxylic acids. achieved. The carrier material may carry a relatively large amount of surfactant and, while being wetted, may release the surfactant only upon physical stimulation, such as vigorous digging or scraping.

This type of polymer matrix material is disclosed in British Patent No. 1522.
No. 759 (Airwick), European Patent No. 28118
B (Hydro-Optics Inc) and British Patent No. 2061308B (Albright & Wi.
lson) as described in each specification.

Particularly advantageous materials of this type from the point of view of the invention are those derived solely from hydrophilic monomers, in particular hydroxyethyl methacrylate and hydroxyethyl methacrylate. The latter is commercially available from BP Chemicals and is a particularly preferred material.

It can have sheets, particles, powder or any other divided state.

Polymers of this type containing surfactants can be granulated with minimal loss of surfactant and can be advantageously used in the products of the invention in this form.

When wetted and rubbed, the products of the invention release surfactants in a controlled manner. The product can be dried every other time and used repeatedly at will until the surfactant is exhausted.

If desired, the IJ agent material may be other than the surfactant. It may also include bleach, disinfectant, pre-polish or any other useful household cleaning agent.

Preferably, the products of the invention contain from 2 to 10 Il of total matrix material, including surfactants, fragrances and any other active ingredients.

Since surfactants tend to foam when wet, excessive foam can be generated while rinsing the product and therefore problems can arise when using the product to mop up moisture from wiped surfaces. . Although this problem can be alleviated to an extent by using nonionic surfactants rather than antiionic surfactants, a modest amount of foam can still occur.

Preferred surfactants are nonionic detergents, especially those containing 8 or more surfactants (
Polyethylene oxide condensates of aliphatic alcohols having 8 to 18 carbon atoms, such as lauryl alcohol or tallow alcohol, combined with 3 to 30 moles of ethyleneoxy F for each mole of the long-chain alcohol. It is. Other preferred surfactants include 6 to 12
Mention may be made of polyethylene oxide condensates of alkylphenols with alkyl groups having 5 carbon atoms (e.g. evanonylphenol), in which up to 60 mol of ethylene oxide are bonded to each mole of alkylphenol. A highly preferred surfactant is 5ynperonic
7 (trademark), tallow a/':'-ru 18 EO, Terg
ito115-8-7 (trademark) (secondary C□-C□, alcohol 7EO), Dobanol 91-5 (trademark)
(Linear chain c, -C.

7, I+/Cole 6 EO), a mixture of Tergitol and Synperonic, a mixture of tallow alcohol 18EO and Synperonic, a mixture of tallow alcohol 18EO and Dobanol, and nonylphenol 8EO.

(Left below) The products of the present invention include a polymeric material in the core and are capable of reversibly absorbing and retaining large amounts of liquid. The use of this polymeric material in cleaning products has already been covered in British Patent No. 2142225A.
It is disclosed in the specification (Uni 1ever),
It is a pressure sensitive porous polymer, polymer 1
is capable of absorbing and retaining at least 3 f, preferably at least 109, of a hydrophilic liquid, capable of releasing at least a portion of said liquid when manual pressure is applied, and absorbing the liquid again when released from manual pressure. It is possible.

The superabsorbent polymeric material is preferably a sulfonated crosslinked polymer, such as polystyrene containing sulfonatable aromatic residues and having a pore volume of 3.0 to 99.5 cc/f. Sulfonatable crosslinked polymers have a high proportion (at least 90%) of an internal phase, where the internal phase is free of water and the continuous phase consists of one or more monomers, preferably including styrene.
A polymer of an emulsion and a crosslinking agent is preferred.

Other superabsorbent polymeric materials that may be used in the present invention include co-pending British Patent Application No. 8600102;
British Patent No. 2155481A (Unilever),
Examples include (D) described in European Patent No. 9157504 (UnNever) and European Patent No. 156541 (Uni 1ever).

The product of the present invention contains the above-mentioned superabsorbent polymer material from 0.5 to
Preferably, it contains 5. Not only does this material significantly reduce the amount of foam created by rinsing and pressurizing the product, but it can also be used to wipe moisture from surfaces that have already been cleaned and wet. become. The product can then be rinsed again and squeezed dry for repeated use.

The product of the present invention will be explained in more detail below by giving non-limiting specific examples based on the accompanying drawings.

The wiping cloth 1 shown in FIGS. 1 and 2 is attached to the lower support 2.
and an upper support 3. These two supports are joined together at their peripheries by a thermoplastic adhesive and form a grid of e-turns 4 to form an array of square cells.
are joined along.

The upper support 3 consists of a plurality of discontinuous lines 5 containing the abrasive material.
Carry according to the turn.

The printed abrasive IQ turns are shown schematically only. Can it be used/? Turns can include multiple discontinuous parallel lines (25% surface coverage), zigzags (50% surface coverage), or multiple continuous intersecting lines (50% surface coverage).
%) etc.

A core 6 consisting of a mixture of different granular materials of the 2s class is arranged between the supports 2 and 30. The particulate material of WJl is a matrix material of polyhydroxypropyl methacrylate carrying a surfactant, and the second particulate material is a matrix material of polyhydroxypropyl methacrylate carrying a surfactant;
) is a superabsorbent sulfonated polystyrene manufactured by the method described in Example 1.

Example l A wipe product of the following composition was formed.

Nonionic surfactant (nonylphenol 8Eo)
34.8 fragrance
19.9 Polyhydroxy◇20 Pisile methacrylate 44,7 Benzoyl peroxide (containing 25% water) 0.6 The first three components were mixed and deoxidized by bubbling nitrogen. Benzoyl peroxide was then added and dissolved by shaking, and the mixture was left under nitrogen for 24 hours. The resulting mass was crushed into coarse and small pieces, and these pieces were cooled with liquid nitrogen, crushed in a hammer mill, and then passed through a tube to obtain material with a particle size of 710-1000 microns.

Highly absorbent sulfonated polystyrene having a particle size of 100 to 1000 μm was formed by the method described in Example 1 of GB 2142225A.

Support base weight 60 f 7m
2 of 27 cRX 27cm spun and connected
-bonded) viscose nonwoven fabric (Japan Mitsu
bishi M Mitsubishi TCF 40
6) The following composition was printed in parallel discontinuous lines with a height of about 420 μm. Product surface coverage is 25
It is Chi.

Abrasive 19 Particle size 125-450μm Vinamul 7172 (5m) 40Viny
l Products adhesive Viscalex H
V30 (young) 4 Thickener water, pigment, remaining combination 5 tons of polymer and porous 41J mer 22 are spread flat on the support layer, and a 27cm x 27cm Mitsubis
A layer of hiTCF 406 was placed on top of the polymer.

These two supports were joined together at their periphery with thermoplastic adhesive and in a grid to form an array of 127 3cs+x3cm square subdivisions.

Example 2 A wipe product similar to Example 1 was formed.

The following composition was used.

Weight 1t% Fragrance 5 Polyhydroyl orovyl methacrylate
34.8 Benzoyl peroxide
0.6 Support One support layer was coated with parallel discontinuous lines of abrasive having a height of approximately 620 μm.

Both of the products obtained in these examples were highly effective in non-marringly cleaning soiled kitchen and bathroom surfaces. Upon wetting, nonionic surfactants are released.

After use, the product can be rinsed and wrung out and used to wipe away moisture from cleaned surfaces, then rinsed again, wrung dry and reused for further use.

[Brief explanation of the drawing]

FIG. 1 is an isometric explanatory diagram of the wiping cloth of the present invention, and FIG. 2 is a partial sectional view taken along the line --H in FIG. 1. 1... Surface wiping product, 2, 3... Support, 5
... Abrasive, 6... Nucleus. /SS Adult Patent Attorney Nakamura j=Fig, 2゜

Claims (1)

[Claims] (1) Capable of absorbing and retaining at least 3 g of hydrophilic liquid per gram of polymer, capable of releasing at least a portion of said liquid upon application of manual pressure, and capable of absorbing liquid again upon release of manual pressure; A product suitable for surface cleaning comprising at least one support layer carrying a polymeric material such as, further comprising a polymerization product of a hydroxyalkyl ester of an α,β-unsaturated carboxylic acid and a surfactant;
Said product, characterized in that said surfactant is entrapped within said polymerization product.