DE1464613A1 - Bendable permanent magnet - Google Patents

Description

PATENT ADVOCATE DIPL.-TOGTfTAHS WERNER GRAF

REMOTE CALL 77 6205. OTPffMffOTMOTM *. FRANKFURT AM _f & _ea 25th time 1962 sch. SCHWINDSTRASSE 8

1958 file

The B. i ¹ . Goodrich Company

Akron (Ohio)

Bendable permanent magnet

The invention relates to permanent magnets and more particularly those that are bendable.

It is known to produce permanent, flexible magnets by using finely divided magnetic particles connects with a flexible binding agent. Such magnets not only have the advantage of being without breaking one to be able to absorb certain transverse deformation, but have a large number of magnetic poles distributed over the surface with the possibility of an arrangement that can be changed within wide limits. There is also the advantage that such Magnets work well with one for processing rubber or similar rubber-like materials have existing machine equipment manufactured and can be easily cut into the desired dimensions and formats during or after production.

BATH 809805/0560

The magnetic forces of such flexible magnets are however, not as large as those in which the individual jiagnetpartikeleten are solid, for example larch sintering or Melting together at the points of contact are connected. This differed in the power of these two types of encounter is essentially explained by the fact that with a bendable magnet the total part of the., lagnetmatsrials is less than in a fixed magnet of the same Size, namely larch the proportion of the binding agent, which causes the bendability of the magnet, and is itself magnetically is. Try to use the magnetic force of bendable magnets the maximum achievable with the known compositions hinaas simply because za increase that the proportion of the magnetic material versus the non-magnetic material is increased, leads to difficulties in manufacturing and stressing flexibility and extreme fragility of the end product.

The present invention provides flexible permanent magnets which have a higher percentage of magnetic particles and for a given bendability a greater üiagnetkraft a} .s with the known flexible ones Magnets. Or, to put it another way, leave it according to the invention magnets produce themselves, which have greater flexibility and greater resistance to kinking, crumbling, etc. / or brach, as known flexible magnets of the

BATH

809805/0560

same Ivlagn et! met. These "improved" properties are achieved in that the iaagnetpartikelchen substances are used as binders to hold together, which have a high iiolecular weight with very long molecules:!, soft are good tensile strength, good resistance to oxidation and a high capacity for finely divided iviagnetpartikel in the amorphous state.

Preferably there is a bendable one according to the invention Permanent magnet with finely distributed iiagnetpartikelchen from a proportion of 60 to 72 ·> »of these particles on the total volume of the magnet, whereby one or more binders aas to hold these magnetic particles together the group of sulfchlorinated polyethylenes, polyisobutylenes and chlorinated polyethylenes. Preferably two of these binders are used together in a mixture, the proportions of the two binders as can be selected to achieve the desired processability, surface tackiness and strength will.

The accompanying drawing shows: FIG. 1 a diagram of the magnetic forces achieved and the specific gravity of magnets using the improved binders according to the invention depending on the ferrite content; other Fig. 2 is a diagram showing the flexibility and the resistance to breakage of the erfindangsgemäSen shows improved bendable magnets again depending on the ferrite content; the

Specific gravity curve is also ifalli 809805/0560

plotted to make the comparison between the Pig. 1 and 2 to facilitate.

The manufacture of the bendable magnets according to the invention requires an internal mixture of the magnetic particles the flexible binding agent, then aasforming of the mixture and finally the incorporation of the finished product in a magnetic field. The magnetic particles preferably consist of one or more complexes Oxides known as ferrite. They are used in crystalline form and in a finely divided state, the individual particles being about the same size approximate the magnetic range of the material.

A ferrite used according to the invention is defined as a material of the formula M0 _Q FegCU, where M is a

bivalent metal or lead and _{Q means} an integer 'measuring number. A typical example of such material is B _a riam_ferrlt ^ of the composition BaFe ₁₂ ⁰ Iο · The ßröSenbereich this blended into the binder magnetic particles varies between o, 5 and 1o microns, wherein the Hittelwert the size of the Magnetpartikelohen preferably between 1 and 1.5 microns lies.

A preferred composition of one according to the invention bendable magnet made of ferrites and a mixture of two of the named binders is the following

_ ■ _Λ ^ i vol. I weight

Bariome ferrites 67.9o 91 _f 35

SaIfochlorinated Tea Polyethylene

len ·, 22.71 6.46

Polyisobutylene 9.39 2.19

BATH 809805/0560

In this composition, the mean size of the barium ferrite particles is 1 to 1.5 microns in a seed size range of 0.5 to 10 microns. The sulfochlorinated polyethylene used was the product marketed by EI duPont de Nemours & Company as Hypalon ^. The product manufactured by the Enjay Company under the name Vistanex L-Ho was used as the polyisobutylene.

The sulfochlorinated polyethylene and polyisobutylene are used to make this flexible magnet A common rubber mixer worked together until a plate shape results, from which the ferrite added and is incorporated by a further treatment in the mixer until a completely intimate mixture of all components is achieved. This mixture is then applied and granulated. These granules will last as long as there is is still warm, given a conventional rubber extruder with a heated mold, from which a strand of essentially pike-corner cross-section emerges. The strand emerging from the fora is cooled, for at least Deposited for 24 hours and then magnetized as long as it is still * connected, using magnetization devices that operate with capacitor discharges work and have a magnetic pole arrangement which the Create north and south poles in a single area of the strip and along the longitudinal axes thereof.

809805/0560

weight , 62 91 , o3 5 , 35. 3

Another example of forming a flexible magnet has magnetic particles in the same size and scope as in the example just described, which are caused by a mixture are held together by sulfochlorinated polyethylene and polyisobutylene and have the following composition:

φ vol.

Barium ferrite 68, oo

Sulfochlorinated

Polyethylene 17.67

Polyisobutylene 14.35

A further example of a bendable magnet according to the invention has magnetic particles the size of the first example, is held together by a mixture of sulfochlorinated polyethylene and polyisobutylene and has the following composition: i

$ Vol.

Barium ferrite 68, oo

Sulfochlorinated

Polyethylene 19.89

Polyisobutylene 12.11

The magnetic force of a bendable magnet depends, of course, on the percentage that the magnetic particles stand occupy in total volume, In other words, · the magnetic force increases with increasing volume fraction of the Magnetic particles. The upper limit of the proportions of magnetic particles, e.g. of barium ferrite in the intended The order of magnitude is reached when there are no more particles in the flexible binder without loss of the

809805/0560

-Y-

Processability or the bendability of the finished magnets let it work in. On the other hand, means a reduction in the proportion of the total volume filled by magnetic particles greater flexibility, the lower limit again being where a further reduction in the proportion is required on magnetic particles, the quality of the magnet produced deteriorates so that none are economical more satisfactory magnetic properties can be achieved.

It has been found that magnets with better magnetic forces can be achieved with the proposed binders than with the known flexible magnets which use polyvinyl chloride (PVC) as binders when the proportion of ferrite particle sizes is 67 $ of the total volume of the magnets. It has also been found and can be seen from FIG. 1 that a surprising increase in the magnetic force occurs with a volume ferrite content of $ 67 and above. While the increase in the magnetic force below a ferrite volume fraction of 67 $ takes place approximately in a straight line, the increase in the magnetic force above this level is no longer proportional, but much greater. On the other hand, the maximum dee ferrite content is determined by the amount which can be pressed even sufriedenstellend in mixture with the binders from a conventional screw extruder. This Maxiana is about $ 72 of the total volume of the magnets.

809805/0560 bathroom

However, it is for the manufacture of the invention bendable magnets do not matter whether they are extruded or whether the table components done on a rubber mixer. Mixing can be done in any known manner and with any known Device can be carried out and the mixed material can be molded, rolled or after molding or Rollers' cut or otherwise brought into the desired shape. For example, you can be involved Facade parts are made by compression molding · Magnetic letters or other thin parts can be used are punched from strips, which are produced by extrusion, rolling or other shaping have been. When the magnets are worked as a surface and cold rolled, the mixture of ferrite and binders have a slightly higher ferrite content as if this mixture is extruded.

Magnets in which the barium ferrite or another ferrite in a smaller proportion than 67 Volume # are introduced, have excellent flexibility, good tensile strength and good buckling resistance, but the magnetic force has descended. Ee has been found to be sufficient for materials that have a Magnetic force for commercial use should have, the ferrite content must not be less than 60% of the total volume, if all

BATH 809805/0560

One or more of the groups of sulfo-chlorinated polyethylenes, polyisobutylenes and binders the chlorinated polyethylene can be used.

The magnitudes of the magnetic force, the bendability and the buckling resistance of flexible idagnets made from barium ferrite particles of the specified size in a mixture of sulfochlorinated polyethylene and polyisobutylene exist depending on the Ferrite proportions can be seen from Table 1 and in Pig. 1 registered. In this table are the physical for a number of elongated magnets Properties recorded. All specimens are extruded with the same exit nozzle. Their final dimensions in thickness and width result from the magnets after cooling.

The magnetic force of each magnet is different on two Wise men have been determined. One determination was made with a commercially available gaussmeter. These values are expressed in gray units in the table. The other determination is made by that each magnet is softened one after the other in a row Bending blocks of known weight and width of one Inches at right angles to this width. A film made of non-magnetic material from o, o15 inches will be between defc magnet and the block brought and determined a gap of this thickness between the two, the weight of the block is registered,

BATH 809805/0560

which is lifted by the magnet as a formula: in pounds per inch the length np: e of the magnet.

The bendability and the inicic resistance are determined with the help of the Tinius Olsen i'estigkeits-i'rlifgeräts, in which a self-weight of o.995 pounds is used. A sample magnet with a length of zv / one inch is clamped in this device and bent until the load indicator (division into 100 units of the same size) is at 5o. The angle by which the luistermagnet is bent at this point in time is displayed in degrees of arc on a second scale on the device.

The ija ic sw ink el is made by observing the convex Determines the surface of the test magnet, which is bent in the device. As soon as there is a first surface crack occurs, the displayed arc deflection of the bend is read on the instrument, which is called Xnickwin> el is looked at.

Table I.

AB GD E barium ferrite 600.0 600.0 600.0 600.0 600.0

(In parts by weight)

Hypalon 2o 1.5 55.34 49.74 44.27 38.9o

(In parts by weight)

Vistanex L-Ho 2o.77 13.32 16.32 15.o7 13.27 (in parts by weight)

Ferrite in weight> j 80.00 39.00 9o.oo 91.00 92.00

BAD OR! G> N ^AL 809805/0560

B. .83 C. 1464613 99 A. 61 668 64.32 D E 976 59.49 3. 144 3,769 66.94 69. 144 3,552 • 384 .144 3,351 3. 381 .146 • .382 .143 .39ο .381

Ferrite in volume * »

Specific weight
('. Cattle)

Strong in inches
-third in inches

Bending angle in degrees of arc 36 28 2o 14 6.5

(With the load condition
5o of the load display degree scale)

Bend angle in degrees of arc 85 ⁺ 59-67 48-49 33-35 15-16

Magnetic force without joint 527 556 564 578 614 (ßaussmeter) *

Magnetic force in one

Gap of o, o15 inches. .186 .2o1 .2o9 .217 .264 (lifting weight in pounds
per inch length)

The ratio between solfochlorinated polyethylene and polyisobutylene, in which the above-specified proportions of ferrite particles are embedded, can be varied in a wide range to achieve a flexible magnet . Is made depending gröSer the proportion of polyisobutylene in the mixture so as to stretchable and adhesive is capable of the magnet.

The larger the proportion of sulfochlorinated polyethylene is made in the mixture, the stiffer and less elastic the magnet becomes. A preventative variety of the

809805/0560

used polyisobutylene ηβΐ a high molecular weight and is sold by the Enjay Company under the tradename Vistanex L-14o. As sulfochlorinated Instead of the Hypalon already mentioned, polyethylene can also be sold under the trade name Hypalon LD-22o from the E.I.duPont de emours & Company can be used, which improves the toughness and the enick resistance of the magnet.

An example of a magnet whose bendability is greater than that of the examples above is at the same magnetic force and is to hold. Pens and other articles is the following composition »

Volume # barium ferrite 64.25

Sttlfocjalorated ..

Polyethylene 1o, 21

Polyisobutylene 25.54.

In this composition, the size of the ferrite particles is the same as in the compositions listed above. The polyisobutylene used was First Vie tan ex L-Ho and the sulfochlorinated polythene used was Hypalon .LD-22o.

I am an example of a magnet according to the invention, which \

has a ferrite content close to the upper allowable limit, yet can be extruded satisfactorily, and has sufficient flexibility for use in magnetic seals and other purposes, is as follows

BATH ORIGINAL

809805/0560

.- 13 · -

: .u iamiaenetzt:

Barium ferrite (in

Parts by weight) 600.0

i.7palon LD-22o (in

Parts by weight) "5 ^ .0

VLstanex L-14o (in

Tewicat parts 1b.ο

serrit in weight ^ 92.59

Ferrite in volume ^ 71.35 ofirke in inches 0.163

iireite in inches or 5J6

Bend angle in degrees of arc

(When the load is loo

on the load indicator- ^ degree-

scale) 2.5

Kniokwinkel at the first

Anriii in degrees II.O

There is no marked difference in the net force of the magnets in which the ferrite is embedded in one of sulfochlorinated polyethylene with polyiso, the mixing ratio of which is reduced while the ferrite content remains. However, Aich eribt therefrom, as Table II shows a growing luifluJi on the bendability in a substantially extending as ..erade line relationship, when the content of ■ Lyiaobutylen increases. The resistance of the magnet to acM forces increases after an essentially straight line when the proportion of polyisobutylene increases and . var up to a point where the proportion of the polyethylene sulfοchlorier- -in relation to the polyisobutylene calibration un-

809805/0560

WHEEL

_ 14 -

fäar »vie 5: 2 behavior. Β; ά higher proportions of polyisobutylene ί, 'θ.ιΐ the resistance, buckling forces decrease. Aiii the Vaznete whose egg S characteris tics in the ^rn abclle recorded II !, are the-res ^ and ^ ellt enrüft y / orden in the earlier described vieise, only the ^ι undst'ickform oeim Strangoressen the sample is modified.

^{: n} ab-ale II

AWAY . G D E barium ferrite boo.ü 6ου.ο boo.ο οοο.ο όοο.ο

(in crew not parts)

Hypalon LD-22o 5ο.ο 4ο.ο 3ο.ο 2ο.ο 1ο.ο (in öewicat parts)

Vistanex L-Ho ö.1 16.1 24.2 32.3 4o.4 (in (individual parts)

Ferrite by weight ^
Ferrite in volume *
Thickness in inches
Width in inches

ßiegewimtel

(in degrees)

Kink angle

(in degrees)

Magnetic force
(GauBSiaeter reading),

The binding agent of the permanent magnets can consist of a mixture of sulfochlorinated polyethylene and chlorinated polyethylene instead of a mixture of solfochlorinated polyethylene with polyisobutylene. Sin example Onea with this Bindemittelmisciiung composite magnet follows t

, FAD

809805/0560

91.17 91.45 91.71 91.98 92.25 68.26 68.26 6 3.26 63.26 68.26 0.192 0.191 Ο.19Ο 0.187 0.185 o.34o 0.337 0.337 0.334 0.331 3.0 5.0 Ö.O. 7 * 5 3.5 26-30 47-53 34-37 27-30 15-17 65o 625 628 621 622

Barium ferrite 68.ο

sulfocalorie tes
Polyethylene 2o.o

chlorinated polyethylene 12.ο

Another example of a magnet with magnetic force with this binding agent ^ emisch aat the following compositionχ

Volume i » Weighted barium ferrite 68.25 91.11

sulfochlorinated

Polyethylene 3.18 or 91

clilorized polyethylene 28.57 7.98 For magnets, where the binder is a mixture of sulfochlorinated polyethylene and chlorinated polyethylene Can be used from a sulfo-chlorinated Polyethylene of the type Hypalon 2o or the TyDe LD-220 exist, Hypalon LD-220 is preferred because it has better flow properties during manufacture and a better buckling resistance results on the finished magnet. The company can do this as chlorinated polyethylene EGG. duPont de Hemours Ä Company under the trade name LD-184 Item sold can be used. The grudge the ferrite particle is also here within a range of 0.5 to 10 microns.

The two illustrated examples of magnets in which a mixture is used as a binder for the magnetoarticles aue sulfochlorinated polyethylene and chlorinated polyethylene * len used show the wide range of possible

BATH

809805/0560

Changes in the proportions of the two components of the Binder, 'read portions are selected, -um the to achieve the desired properties in the finished magnet, It should be remembered that the larger the chlorinated polyethylene, the stiffer the magnet and becomes less elastic and has greater heat resistance. The volume percent of the magnetic particles such types of I.iagnett should be within a range Keeping from $ 60 to $ 72 for the same reasons that continues have been specified above for the magnets, which are used as a binder mixture of sulfochlorinated polyethylene and have chlorinated polyethylene. ,

In addition to the "use of mixtures of sulfochlorinated Polyethylene with either polyisobutylene, - or with chlorinated polyethylene, the latter can also be made on its own Binders for finely divided magnetic particles can be used. A suitable composition for such Magnet is the following s

Volume $>

Barium ferrite 68.0

chlorinated polyethylene 32.0

In these types of magnets, the chlorinated polyethylene used by E. * I. duPont de Nemours ><, Company under the name LD-184 are used and the particle size of the barium ferrite is kept within those limits that have already been given in the previous examples. The volume fraction of the ferrite particles can be within a range

809805/0560. . bad ORIGINAL

from δο to $ 72, accordingly the proportion of the corresponding Binder between 4o% and 28a ..

The improvements that result from the interweaving of a rindeaiittela from a mixture of sulfocylated polyethylene and polyisobutylene, in permanent magnets with finely divided orarium ferrite as a binder, are from a comparison of the data in -uen " ⁷¹ EbOIlCn III and IV. ersiehtIicn Ln jeaem of these examples is the öariumferrit in the glexchen crystalline structure and in the same particle size, that is in the order of between o, 5 and 1o microns with an average Durchschnittsgrö;?. 3e in the range .vlnclieri 1 and 1.5 microns the plasticized Polyvlnyl-Ohlorid which ö.en as binders in Table III listed magnets used ^r is vorden, has a specific Ge./icht 1.25 and is made up of 1oo parts by weight of polyvinyl chloride, 12o, 2 Sewichtsteilen of a plasticizer and 14 All of the samples listed in Tables III and IV are essentials of a stabilizer for the plasticizer extruded in the form of rectangular strips from the same mouthpiece and magnetized in such a way that the north and south poles lie along the magnet on a single surface of the same. The magnetic forces. and kink angles have been determined in the same way for the magnets listed in Table I. The polyvinyl binder magnets were so poor in bendability that the specimens were broken at the same time that a crack occurred.

BATH 809805/0560

■ ^{? 1} table III O D. E. A. B. Sjo.o 000.0 600 ..0 B ^ rium ferrite OOO.O 600.0 fin ir ° ^ i ρ h "h c?" h ρ ϊ Ί pn ι Plasticized 60.0 66.0 Ö4.0 Polyvinyl chloride 79.5 7o.o (in weight ⁴ ': ilen)

j? -errit in Ge /; ic / its ^: / o

ferrite in volume- ^

Thickness in inches

Width in inches

8.3 89.55 ei.d2 9ο. ο9 9ο.36

64.03 66.91 67.54 68.19 08.36

0.135 Ο.Τ35 ο.184 0.185 0.182

0.532 0.331 o.j32 ο.33ο 0.329

Strangle eating ability zafrieclenstel- ange.nes- bad very

lend sen bad

ilnick: - uad "Brucnwinkel 9

636

629

626

628

(GaassLieter reading)

Magnetic force 0.344 0.352 0.367 0.352 0.375

(Lbs./per inch L ^: inge)

table IV

A B G

ii & riuinferrit 600.0 όοο.ο boo. ο

(in weight parts) Hypalon LD-22o

(in parts by weight)

42.0 4o.o

Vistanex L-14o I6.0

(in parts by weight) ferrite in size

16.0

33.0

16.0

91.19 91.46 91.74 Ferrite in volume ^ 67.61 68.33 69.06

D E

hOO.O OOO.O

37.0 35.5

16.0 16.0

91.88 92.1o

69.43 70.00

809805/0560

BATH ORIGINAL

Thickness in inches. Width in inches Kink angle

(in 'degrees)

0.191 0.13ο 0.1-9 over 19o o.Mo 0.339 0.337 0.337

satisfactory 48. 43 29 21

0.188 0.336

Magnetic force 633 (Gaussmeter reading ^)

Masnetkraft

17th

656 661 662 669 0.391 0.391 or.4o6 or.4o6 0.421

(Lbs./per inch length)

It can be seen that those listed in Table IV Magnets are much more flexible than the magnets in Table III because they can be around large angles can be bent without breaking. The magnetic force of the magnet labeled B in Table IV, measured as the weight which is per inch of the length of the magnet is raised, was 12.2% greater than the magnetic force of the magnet labeled E in Table III. This However, Magnet E was not suitable for economical manufacture because of difficulties in extrusion molding has made and is very susceptible to crumbling. In contrast, the magnet E of Table IV has perfect satisfactory properties, both for manufacture and in use. Improving the Magnetic force is even more noticeable when comparing the strongest magnet of Table III, which can be extruded satisfactorily (magnet B)

BATH

809805/0560

- 2ο -

and the strongest of the magnets in Table IV (Magnet S), which are also satisfactorily extruded: ^ g. _; can. This comparison shows an improvement of over $ 2o. .Over it niiiuus lnast sicn derliagnet E of Table IV "bend on a vinlcel which is almost three times larger than the magnet" R of Table III.

The magnets in each of the examples shown "* can be prepared and manufactured according to any of the procedures described in connection with the manufacture development of the magnet of the first example has been explained. Oas magnetizing the I aterial produced in this way Can either be made after the material is aged or immediately after the formation of the shape.

The "Be: nc laff enheit of the magnetic poles in the magnetized material may be provided, as described in the first 0. Ausfünrungsbeispiel, or may be provided in any design or arrangement .anderen geAiinsciiten

be. For example, the north and south poles can alternate across the width or lengthways of the material the poles can also all be on one side of the material or distributed between the surface and the diode be arranged .. Likewise, the magnetic poles Distribute evenly over the material or concentrate in local districts as the material is susceptible to magnetization and maintains magnetization in local areas, as in the Performing the magnetization is known.

The invention is not limited to a particular manufacturing process the magnets or the ones in the

BATH ORIGINAL

809805/0560

The various examples given are restricted in .. \ en and have to vary within the limits specified in the claims.

Pat en tans prli. ^

BATH 809805/0560

Claims (1)

1) Bendable permanent magnet, in which finely divided Particles τοη vagnetwerketoff through a binding belt cassias are included, dadaroh known, dai "least a component of the flindemittels au · the group of" ulfoohlorierten polyethylenes, polyisobutylenes, and chlorinated polyethylenes derived, wherein ti · tfagnetpartikel a proportion of 6o - constitute lumen based on dat geeamte Magnetτο 12 volume percent and having a (Jröie to 1o microns. 2) Bendable permanent magnet according to Anepruoh 1, daduroh marked that ferrite particles are used as the magnetic material, the volume of which is at least 67 pounds entire Magnetτοlumens and their OröSe swisohen o.5 and 1o microns. 3) Bendable permanent magnet according to claim 1 or 2, daduroh gekennseiohnet that the binding agent is a mixture of a sulfochlorinated polyethylene with a polyisobutylene and / or an alloyed polyethylene. 4) Bi * {permanent magnet, marked with it, because it consists of finely distributed yerrlt particles a volume ante ti το η 68 * and a size sirisohen o, 9 and 10 microns, and one as a binding agent ulsohong clay 17.67 tolumenproeent eulfoohlorierter Polyethylene with 14.33 volume per cent polyisobutylene is used, whereby the OeeamtTOlamen is the required quantity * ·· ¹ ^ * "*" ■ * "· _BAD ORIGINAL 809805/0560 5) Bendable permanent magnet according to claim 4, characterized gekennseiohnet da8 from the binder mixture 19 »39 volume percent of sulphonated polyethylene with 1.11 Yolumenprosent polyisobutylene. 6) Bendable permanent magnet near the test 1-3, This is characterized by the finely distributed barium ferrite particles in a range of 0.5 to 1o Mikron al · Magnetβtoffβ and a binder is used · aas welohe a Kisahung from 67.9 £ eulfoohloriertem polyethylene and 22.71 1 »Polyieobutylen in Volumenantellen consists of (Jeeaatniegnetvolumen.: 7) Bendable permanent magnet according to claims 1 * 3, dadaroh recognized that finely distributed bario-ferrite particles ait 64.25 ^ la a droplet of o ₉ 5 to micron al · magnetic material and a binding agent is used, which aas a mieottüng of 10.21 * salfoohloriert ·! » Polyethylene and 25.54 * polyobutylene, all percentages being tolomenaateile sum QesaatVQliuien the magnet. Θ) Bendable permanent magnet according to claim 1, dadaroh known that he had a share of 68? ( Ferrite particles and 2 eggs salfoohloriert em Po Iy- - Ethylene filled with 12ji chlorinated · »Polyethylene be * stands, with the pro «ent specified Tdlomeaantelle ium aeaamtvolamen des magnet · mean. _BATH 809805/0560 9) Biegbartr Peraaatntaagntt naoh Anepraoa 1, thereby gtkeane "wages, that tr aas tinea Antttl Ton 68> t5? T ferrite" Particles tmd 3.18 # aulfoehloriertta Poljith / len gt- miaeat with 28.57 * ohloriertta Polyftthyltn bttttht, wobti dit Proitntangabta Voluaeneileil siui Ottaatroluatn dta Magnatβ btdtutta. 10) Bendable trmantntoagntt naoh Anapruolx 1 «dadoroa gt« ktnneeiohnet, which carries an ant «11 ron 68 ^ with 5t *> chlorinated polyethylene as a binding agent in proportions • us aetaatrolumen de • magnets. 11) Bitgbarer permanent magnet NaOH Anapruoh 1, dadurth marked in "tiohntt, dal Bariaaftrrit-la Partlktl a Yoljmenanteil ron 71.35jt case (JetantToluBea dt · Ilagatte and an ar «it bit Io Mlkrtm In« In · «Hadtmltttl« eml «« h aaa eulfoehloritrttm Pol] rftth / lta and Poljrltobatylta «la» gtbttttt and. fht Β.Γ. loiflrlik Ootipan / ORiGSHAL, 809805/0560