DE2000638A1 - Insulating material with a low coefficient of friction and a method for producing such a material for wire, especially for electromagnets, coils, windings or the like. - Google Patents

Description

Insulation material with a low coefficient of friction as well as processes for the production of such a material for wire, in particular for Electric magnets, coils, windings or the like.

The invention relates to an insulating material with low coefficients of friction and a method for the production of such a material for wire, in particular for electromagnets, coils, windings or like

The object of the present invention is to provide a wire that does not require 01 for winding, d. H. the insulation of which has a coefficient of friction, which is so low that it can be wound at high speed without any pretreatment. The Drant The present invention has a rufcsouiä-e, dry Surface, due to the high speed winding

WK / Ci

ÜÜ983Ü / 1639

becomes possible and hole prevents the smooth nature of the surface not the application of a coating or the adhesion of other coatings. The Isolier-oa ter La L results excellent, extremely dry lubrication on an Ö! .free surface. This gives the following Advantages: One can wrap cleaner and the V / icke L-apparatus and rooms in which work and material stored, stay clean, because dust and dirt cannot adhere as easily ..: neLn uriu as they do where the usual Minera Lö Le are used. It can be from that Wire also no Gl will be thrown off or burn off according to the heat generated by the friction. It also reduces the pollution of coiled bodies with Fre :: iüstoffen achieved, v.'odurch di ^ reliability of the product increased v; ird.

I finally deny those otherwise by inadequate Lubrication difficulties arise and one achieves a better use of space and wire in the wound products by reducing the average Winding length, because the slippery wire windings lay tightly and tightly against each other, making you unnecessary Avoids gaps between the turns during the Wicke Lns.

009830 / 163Θ

With the wire according to the invention, winding machines can also be used which work at a maximum winding speed, as a result of which a better degree of efficiency is achieved. The resulting more compact windings also improve the weight balance on rotating parts and reduce the load on bearings and bushings. Additional insulation, such as wedges for slots, can be used much more easily, which is due to the improved space factors.

In the case of electrical wire, the problem of hardening of the metal during processing arises. With a wire according to the present invention, this problem is avoided, since high winding voltages are not required. Close. ^: Lent a shape of the conductor is he Leichhardt tert un _u distributed over the conductor considerably, because the wires together .anggleiten ent when they are deformed. The lle,:? To:! on: of wound bobbins from the. Inventing wire requires fewer cows and kneading.

The on ring: from strips to spools, from outside. According to the invention, wire wound is easier to accomplish because the tapes adhere better to the wire, since no Cl is present or needs to be removed. Coating with lacquers by spraying and / or dipping is also possible because of the absence

009830/1639

BATH ORIGINAL

of oil, which increases the wettability of the insulating material with which! jack would bother to perform better.

The current density per unit wound is also improved-, v / ei I by eliminating the conventional Winding process no air and / or oil inclusions can occur.

Isolation material, η us NyLon has long been used in the Dro ΊΛ industr. c as the ar .: best windable film used because it has smooth surfaces and therefore the V / ii. :.)! i! etj s.ch when v / i disgusting in the crotch room tightly anoiiiaiiüoj. elite. The insulation material according to the invention, however, represents 'Jylon, π' ..- ■: -. YerrleJcbsversucbe at high Wickelgeschwin ':. _Ir': eJ ter, α \ ι. autcmati scl'jen apparatus have shown far in the ooi.otten. The same applies to the determination of the coefficient of friction in the laboratory.

Dos Ire ΐ ic-n; .iter ia 1 of the invention brings you down 2C ?> Better! Poi bunr, '^ koef f icient with reference to Ny Lon u: v ei'.ie Verl ^ .isorun ■ ur. 9C fo, verri ionen with other Iscliorfil-net .. hr · ¹ 'die reu Tries: can the optimal Viicko Ibarkei t durci: the lowest coefficient of friction be foreseen. Animal coefficient of friction, which any insulating '.-. Ateria possesses, is primarily "; inie on the material Eurback'jführ'i ■■ .. , ve 1 c ' ·:. · .3 used for the outer layer

-5

0 0 9 8 3 0/1639

is and can be influenced to a limited extent by the use of wrapping oils or other superficial lubricants. I ¹ Ur nylon-coated insulating material L has a coefficient of friction of 0.17. BeL other commonly used coating agents !! it is in the range up to 0.33. The insulating means according to the invention has a coefficient of friction which is consistently 0.14 or less.

Many products made from such electrically conductive wires must be further coated with binding varnishes or Varnishes are coated or, if no varnish or varnish is used, with enamel or other colors, to cover the wire. In addition, various types of electrical tapes are required to secure the wire guilds hold in their positions. These tapes, too, must work well on the smooth surface of the coating agent stick ι. The resin coatings of the present invention have such good adhesive properties for tapes and paints, which in large part for the progressiveness the invention plays a role.

The task at hand is now realized by because ... the wire with a new conventional coating agent., for example a polyamide, polyester, Polyfcr'hijeLLLtamid LiiiLd-, alkyd-, i-.poxidbarz or the like.

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0 0 9 8 3 0/1639 ^BAD OFUGINAL

is tet that an addition of 0.01 to 25.0 wt .- ^ one Contains wide-dimensional linear organic polysiloxane, based on the weight of the resin.

Bas PolysiLoxan can have the following ironic formula to have

R, -Si-O- J ι

-Si-O-

^R 1

Γ ¹

Si-R, ί '

in which R. is an alkyl or aryl radical, Rp is an alkyl radical or an unsaturated organic material or a side chain having 1 to 20 carbon atoms or more, R ^ an alkyl radical uno / or -H, -OH and -COOH or an unsaturated one Side chain and η is 2 to 10 or more.

The polysiloxanes that can be used have a molecular weight ranging from 600 to 8000, an average of 2500 and a viscosity of 1 to 200,000 Gentistokes at 25 ° C., an average of 1500. These compounds are known per se and can be obtained by hydrolysis of diorganic Dihalosilanes, for example MethyLphenyldici-i Lorsi Lan or MethyläthyIdichlorsilane and subsequent partial condensation of the hydrolysis product a unc; further reaction or copolymerization with an unsaturated organic compound have parts.

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009830/1639

The nature of the polysiloxane polymer is critical for the practical implementation of the invention. Polymers, for example oil-hygienic polysiloxanes of different molecules (Tf. Weights-, have a surface with a low coefficient of friction if they are added to different *. Harzon, but most paints, lacquers, varnishes and adhesive tapes do not adhere to such a surface. On the other hand, monomeric silicones or three-dimensional resinous silicone are adhesive; for glue It is necessary to use linear Dimethyipol.ysi loxane polymers which carry a radical which is terminated on an egg directly or via OH groups or ois: -; e group ^ ebuacen is that the bond: with the Harcscliioht ver ^r : i: .tei.t. The Si Likoupolymers can bear a multitude of organic Ceite .. chains on the actual polymer chain (Si-OSi). These can be methyl, ethyl , Propyl, lutyl, Phenyl, Kar'trxyo Iky ~~, Methylalkyl, Hydroxy- a al kv ", Oynnonlkyl ecu- Aminon ..ky .. pure. Of these, mainly ilethyls and phenyls are identified.

The erfi: i5un ₍ : sjemäSe insulating material is produced by applying the ote.i mentioned polysiloxanes with a glaze ..: of a certain! Reshaping Harr.es un.:/ or EIastO ^- "e-rs, which noruc! prove to be wired. do ^ sr.ittcverwari3t v.'ird, i ...

0098 30/1639

in the range 'from $ 0.1 to $ 5 »based on the weight of the Resin, mixed. The polysiloxanes react at increased Temperatures and combine with the traditional coating resins to form hard, dry, slippery ones Surfaces. Among the conventional coating resins that are inventively: modified according to (3) are polyesters, Polyamide, polytrimellitamide imide, polyvinyl butyral, polyvinyl formal, Polyvinylforma! Phenol, polyvinylformalisocyanate, Polyurethane, Epoxy, Acrylic, Alkyd, Polycarbonate, Polypropylene, Polyhydantoiu and compatible mixtures of these Resins.

The possible mechanism with which the polysiloxanes harden is an oxidation that is triggered by heat when an oxidation level has been reached and free radicals have formed. A catalyst may, but need not be used to trigger this reaction, nei de ^r n oxidative degradation, oxygen reacts with the organic group of molecules, which according to! after the viscosity of the polysiloxane increases until gelling,;: takes place. The reaction depends on the temperature and the supply of available oxygen. Some of the polysiloxanes that can be used have a small number of pendant or terminal hydroxyl groups which can be activated at room temperature by means of a catalyst or by elevated temperature. these can

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lead to the fact that the silicones are kept in a stable solution or in a dispersion with the resin portion which is modified. When the wire is run through a resin polysiloxane coating solution and then through a tower or other suitable oven in which a temperature between 200 and 500 ^° C. is maintained, the desired coating is formed. The silicone in the cured coating is not exuded and has the effect of reducing the coefficient of friction by 20 to 50 # compared to the same coating composition but without the polysiloxane, depending on the particular resin solution used. In addition, the presence of the polysiloxane improves the ozone, moisture and heat resistance of the coating.

Various types of polysiloxanes are suitable as additives according to the invention. One is a dimethylpolysiloxane with a copolymeric terminal group R, for example

CH ₅ CH ₅ CH ₅ CH ₅

R-Si-O-Si-O-Si-O-Si-R II ί I

CH ₅ CH ₅ CH,

wherein R is preferably an unsaturated alkyl group having 1 to 20 or more carbon atoms, for example

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009830/1639

Octene, butene, ethylphenylene or tetradecene.

Another type can be a common blocked polydimethylsiloxane with a pendant olefinic alkyl group, for example

CH, CH, CH, CH,

I ³ I ³ I ³ I ³

CH, - Si - O - Si - O - Si - O- Si - CH *

⁵ ί I II ⁵

CH, R CH, CH,

in which R is an alkyl radical having 1 to 20 or more carbon atoms means. The copolymeric side groups create the adhesion of the silicone coating materials for paints and varnishes.

A third group are the so-called copolymers of dimethylpolysiloxane and a polyoxyalkylene ether, for example

CH, CH,

I ³ I '

CH, - Si - 0 - Si - (polyoxyalkylene)

I I

CH, - CH,

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009830/1639

GH

CH, - Si - O

I ₁

"CH, -I

-Si -0

CII

-Themselves.

CiI ₂ GH ₂ O (CIi ₂ CH ₂ O)

z <

in which the organic part of the copolymer results in compatibility with varnish and / or resins, while the sl liqueur part ensures the lubrication of the ¥ i Ir ::. Part of dea organic radical can be esetfit with the Beschichtun.rsharz by heating to ^.

Alkyl / arylsilanediols, bone; dipbenylsilanediol on loan, sini: also occurring modifying silicones, especially if you wan you cit reaction partners uinsetr.t, the one at HerütelLun .; related to polyunte j? u tipen resins will.

HachJ'i. li; end is a Lifite of Besonaerei: Silicones introduced which are useful for the invention.

number 1

- *>

H ^ -Si-

C ₂ Ii ₅

0-Si i

CH _z

I "

O - Si - CH

CH,

CH- -Si-

H-C-CH

CH-

U-Si

CK-

CH,

-0 - Si -

CH ₃

CH-

009830/1639

BATH ORIGINAL

-12-

No.' 3

CH,

CH, -Si-

CH-

O - Si -

CH CH.

O - Si - CH.

CH.

- Si -

CIi

C) -Si-

Cl Ι CH ₇ I ^J - Si - CH ₇

in '! er: ·: 2 bit: 10 o <; cr ^r ' \ e \ iC means.

.. i. . J C :: - -VA -
I. I.
cj: ₇ I.
^y - ·?

. ir ner: P: up to 20

orjr means ο! .π a copolymer.

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009830/1639

No. 6

H (OR) _n O-

"CH
ι 3 - O Si \ 3 _ CH

in which χ is 2 to 10 or more and η is 1 or more,

No.

OIL

CH-- Si - (GR)

I CH,

CH
I. 3 - 3 O-Si \ CH

CIL

(OR) -Si - CH,

CH,

in. the χ 2 to 20 or more and η 2 or more,

No. 8

₂ -Si -CH ₂ CH ₂ O- (C ₃ H ₆ O) ₁

No. 9

CH,

OH ₃ (O ₅ Hg) ₃ (OO ₃ Hg) ₁₁ OCH ₂ OH ₂ -SiO-

CH,

CH,

SiO

CH,

OH

-Si - CH ₂ CH ₂ O (C ₅ H ₆ '

CH,

009830/1639

-14-

-H-

Ur. 10

~ GH " (CH ₃ ) ₃ SiO SiO CH ₃ No. 11

CH ₃ CH ₂ SiO OIL (C ₃ H ₆ ) CH

[C ₆ H ₅ OCH ₂ CH ₂ OCH ₂ CH ₂ SiO-]

in which χ is 1 to 5 or more,

No. 12

CH ₂ CH, SiO CH ₉ CH,

ι ² -

SiO-Si (CH,)

CH ₂ CH ₂ O (C ₃ H ₆ O) ₁₄ (C ₂ H ₄ O) ₁₈ (C ₃ H ₆ ) CH,

Number 1;

CH

CH ₃ OCH ₂ CH ₂ OCH ₂ CH ₂ SiO (a cyclic tetrar)

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009830/1639

_ 1 C _

Mr. 14th

SiOSi - OSi (CU _? ) ₅

CH ₂ CH ₂ O (C ₂ II ₍ . O) ₄ GH ₅

No. 15

CH- CH "CH-

⁵ I ^ i " OH ₃ (C ₃ H ₆ ) O (C ₂ H ₄ O) ₇ (C ₃ K ^ O) ₇ CH ₂ OHCH ₂ SiO (SiO) ₆

OH, GH, -

No. 1 b

η :: rv;

Ci

-Siol SiCHpOHpO (C ...:! ^ - '_;<; (0: 1.- V *''": ipOi ^ Ci [" - !. S! ('.: ..,!, "I

Kr. 17 OiIoOH--

^ HOH -> -,

OH.-

I ^:

-SiCH ₀ CH ₀ O (CH ₀ CH ₉ C ^ _Λ ^ - (OH ₀

009830/1639

Themselves,),

BATH

Mr. 19

"CH ₂ CH ₂ O (CH ₂ CH ₂ O) ₁₇ CH,

-S i ΟΙ
CH ₂ CH ₂ O (CH ₂ CH ₂ O) ^ CH,

No. 20

CH ₂ CH ₂ O (C ₅ H ₆ O) ₁₁ (C ₃ H ₆ ) CH ₃ CH

(CH ₃ J ₃ SiO (SiO) ₃ -

SiO

CH

-Si (CH ₃ ) ₃

CH ₂ CH ₂ O (C ₃ H ₆ O) ₁₁ (C ₃ H ₆ ) CH ₃

Ur. 21

CII, \ CH

(CH ₃ ) ₃ Si 10-Si-OSiCH ₂ CH ₂ (OC ₂ H ₄ ) ₁₀ OCH ₂

-CH, CH

, CH-

CH ₃

(CH ₃ J ₃ Si OSi I OSi-CH ₂ CH ₂ - (OC ₂ H _{4 I 10} OCH ₂ CH

CH, / j

CH, ν CH,

ι Λ ι

(CH ₃ J ₃ Si ίο-Si J OSiCH ₂ CH ₂ CH ₂ (OC ₂ H ₄ ) ₁₀ 0 { ^& CH,

009830/1639

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No. 22

₂ CH ₂ CH ₂ 0H ₂

CH ₅ (C ₅ H ₆ ) O (O ₅ H ₆ O) ₁₂ CH ₂ -CH OH ₅ / GH ₃ CH ₅ OH ₅ CH

SiO I SiO I SiO / S

\ X ₃ ,

CH, OH,

! ί I

CH ₅ (C ₅ H ₆ ) O (C ₅ H ₆ O) ₁₂ OH ₂ (3HOH ₂ Si [O-Si (CH ₃

CH

No. 23

CH,

CH, -Si-

CH-

I *

0-Si

CH,

OH,

0-Si-CH

OH,

No. 24

CH,

⁵

OH - Si

CH,

I ^:

0-Si

OIL

CH.

-O-Si-CH,

i
OH,

in which R is a hydrocarbon side chain of higher molecular weight, for example heptene, hexene, butene, propene, propylene, tetradecene, pentene, octene or decene means.

009830/1639

-18-

No. 25

No. 26

No. 27

- 18 -

CH,
i

R-Si- I
CH,

CH-O-Si

CH,

CH,

ι -

-O-Si-R

R-O-Si-

CH

CH,

ι ■

O-Si

I.
CH-

CH-,

I *

■ O-Si-O-R

CH ₅

CH,

ι J

R-O-Si-

CH,

CH,

I '

O-Si

CH,

-O-Si-O-R

CH,

in which R and R in Examples 25, 26, 27 are identical or different radicals of organic hydrocarbons can have 1 to 20 or more carbon atoms or -OH, -H or -COOH as in the following:

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009830/1639

No. 28

CH, I * HOOG (GHp) ₉ -Si-O-

CH,

OH,

Si-O

GIL

GIL

-Si- (GHo) _n GOOH

No. 29

CH-

CH-

CH _x

I ⁵

CH _x -Si-O- • Si-O

OH,

'GOOH

(CH ₂ ) _n

-Si-O-

GH

GH,

Themselves

GH,

Instead of letting a solution of resin and polysiloxane harden on the wire, the modified resin solutions of the invention can also be prepared so that is allowed to react with a resin by "a Piropflcopolyaerisation the polysiloxanes in a suitable vessel. Such a reaction can be carried using a partially polymerize ester, for example an oil-free terephthalsäureartigen resin of a Karboxyalkylpolysiloxans, for example Karboxyäthylmethylpolydisi- Loxan running. The highly reactive carboxy- or

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009830/1639

Hydroxy group or hydrogen-terminating aryl-alkyl compound or dialkylpolysiloxanes can be correct under appropriate Process conditions are used advantageously. The polyester resin is brought to an esterification exchange temperature heated. The polysiloxane is then added with a transesterification catalyst, for example black lead or a metal acetate. These are the so-called alcoholysis catalysts. Other examples of catalysts are lead oxides, lead acetates, zinc oxides, cadmium acetates, copper acetate and zinc acetate. The carboxy and / or hydroxyl groups attached to the polysiloxane chain react with the -COOR groups of the ester and form free radicals for a bond or reaction as a polybasic acid with the excess hydroxyls or both. This gets one is a copolymer with a polyester backbone and side chains of polysiloxanes that are distributed over the chain are. Solutions from carts like these can be used as such can be used or processed together with conventional coating resins as insulation material for wires and have the required physical properties una the G conductivities. They have improved solubility as an additional coating or as the only coating on a wire.

A third process for the production of coatings which can be used according to the invention consists in

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that one introduces the polysiloxanes into a polymer backbone during the preparation of the usual resin coating. Such hybrid resins can be used as a lubricious top layer and / or as a lubricious bottom layer, depending on the type. One such material is a polyester polysiloxane, in which terephthalic or isophthalic acids or their half esters are reacted with suitable polyols and an organic silicon compound in a conventional manner. Some of the polyols or the acid are% with organosilicon compounds which contain H, OH, Examples of suitable organic silicon compounds are diphenylsilanediol, carboxyalkylpolysiloxanes, carboxy-terminated alkyl / arylpolysiloxanes. Terephthalic acid, a glycol and the silicone compound are reacted in suitable equipment to produce the resin. Resins of this type can be used together or as additives to conventional resins used as coating agents can be used to obtain coatings λ which have a low coefficient of friction.

Further possibilities for combining the polysiloxane with the conventional coating resin according to FIG The present invention can be carried out by means of emulsification, the polysiloxane being brought into an oil / water emulsion will. There are different base coats for

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Wires made of water have been applied, e.g. B. Acrylic and polyester resins. These primers can be dispersions or emulsions. Thus, one obtains e ± ne slippery surface, one or more layers of means should polysiloxane modified resin are applied to the Grunuierungsschicht from the water. However, it is better if the polysiloxane of the invention (Example 9) is emulsified with the aid of a small amount of a surfactant and added to the aqueous priming resin .

example 1

Copper wire with a primer of Isonel 20OE (polyester wire enamel class H) was coated with a mass of the following composition:

Components parts by weight

Nylon type 6/6 (i6 solution

in a mixed solvent

from phenol, cresylic acid and

E.W. Naphtha) 98

MethylaIkylpolysiloxane 2

Iron Octoate ($ 6) 0.2

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009830/1639

The Kylon siloxane solution was in two layers aui "applied the primer and; | every layer was in a tower at a temperature between 275 ° aii ground and 475 G dried at the top of the tower. Lie coating had a coefficient of friction of 0.095 after curing. Another sample of the primed wire was in the same process with a nylon solution without polysiloxane and similar Iron octoate coated. This wire had a coefficient of friction from O, 187r

From the coated wire ran on one Winding machine Winding bobbins at high speed and despite the smoothness of the surface of the heschichtunn can easily use electrical adhesive tapes, lacquers, for example silicone, phenol or polyester lacquers the wire can be applied without any pretreatment.

The above coating has excellent resistance to continuously applied voltage in addition to its smooth surface. By testing according to ASTM D-2307, the one with the modified nylon coated wire has an average life of 260 G of 2400 hours, while the conventional nylon coated Threatening to have only one of 15-42 hours.

0098 JO / 1639 BATH ORIGINAL

Example 2

Copper wire according to Example 1 with a primer made of Isonel 2OOE was coated with the following compound:

Components by weight

Polyethylene terephthalate
(I3 solution in orthochlorophenol and orthocresol) 680

Methylbutylpolysiloxane 15.6

Iron Octoate ($ 6) 8.0

This solution was applied as described in Example 1 :. and the coefficient of friction found was 0.109. A second sample was coated with a coating of Pclyäthylenterephthalat (Iiylar) without silicone and iron octoate Mistake. The measured coefficient of friction was 0.183.

Example 3

Copper wire with a four-layer primer made of Ieonei 200E was coated with a resin which has the following composition:

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200063Ö

Components by weight

Polytrime.n.itaraidide polymer *

solution in cyclohexanone

and N-methylpyrrolidone) 100

Methyl tetradecyl polysiloxane 0.8

This solution was applied in two layers and

each layer individually in a tower according to Example 1 completely cure m th left. Another sample with the same primer was coated in the same manner and with the same agent, except that the siloxane was removed. The composition with the siloxane produced a coefficient of friction of 0.127, the sample without the siloxane a coefficient of friction of 0.192. The polytrimellitamide imide polymer reacts with the free radical which forms in the polysiloxane above 170 ⁰ O and, on curing, produces a smooth, hard resin without the need to add a catalyst. ™

* Amoco Chemical Co. AI-10 resin or a condensation product from trimellitic anhydride acid chloride and p, p'Oxiddi (aniline). See U.S. patents 3,347,828, 3,320,202 and 3,377,321.

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Example 4

Copper wire with a primer of the commercially available polyester resin for class F wire was made, as in Example 1 described, coated with the following solution:

Components parts by weight

NyLon 6/6 (i6 $ solution in
a mixture of solutions
from phenol, cresyl and EW
Naphtha) 98

Phenyläthylpolysiioxan 0.3

Cobalt toctoate (6fo) 0.05

After curing, the surface layer showed a coefficient of friction of 0.113. A second swatch of the wire was coated with the nylon solution, which contained no polysiloxane and no catalyst. This sample had a coefficient of friction of 0.177.

Example 5

Copper drab with a primer from one with Siloxane alkyd modified terephthalic acid type polyester was further coated with the following solution:

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Components by weight

Nylon 6/6 (16 # solution in
a solvent mixture
made of phenol, Gresyl and EW
naphtha) 100

Copolymer of dimethyl poly-

siioxane and polyoxyalkylene ether 1.0

Catalyst 0.2

After curing according to Example 1, the wire had a coefficient of friction of 0.117, while only with the wire provided with a primer had a value of 0.131. Although the polyester resin modified with silicone Has reduced the coefficient of friction is the deposition Another coating is advisable because it does the base layer is better protected against the effects of thermal shocks.

Example 6

Bare copper wire was coated with fcl.render solution:

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009830/1639

Components by weight

Nylon 6/6 (I6 - 6 solution in

a solvent mixture

from phenol, cresyl and E.W.

Naphtha) 100

Karboxyäthy LmetbyIsiloxan 3 »5

Catalyst 0.3

This wire, provided with several pushes, was made cured as in Example 1 and the resulting coefficient of friction was 0.123. To improve other properties, another base layer can be used together with the nylon siloxane coating.

Example 7

Copper wire nit ^r a Grunaierung from Isonel 2ooE was provided with a coating of the following composition:

Components Weighted parts

Commercially available polyester varnish class π for wire 80

Alkylarylsiloxane 20.8

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After curing, the coating had a coefficient of friction of 0.103. A second sample of the same Wire was coated with the above solution, but without the polysiloxane, and had a coefficient of friction of 0.177. The coating that the alkylarylsiloxane showed better burnout resistance compared to that commercially available with Isonel 20OE coated wire.

Example 8 Components G-ewiohtsteile

Epoxy resin (20 # solution) 310

Kobaitoctoate (696) 2

Manganese octoate ($ 6) 1

Methylepoxyalkylsiloxane 3.1

The above solution was applied in two layers as the last λ coating on a wire that had four primers made of a commercially available epoxy wire enamel and cured as described in Example 1. This wire had a coefficient of friction of 0.197. The same primed wire was finally coated only with an epoxy resin and had a coefficient of friction of 0.330.

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Example 9

Constituent le

Acrylic resin (24 $ emulsion in water)

Alkylarylsiloxane Emulsion in water with a non-ionic wetting agent)

Cobalt toctoate

Parts by weight

90

1 0.4

The wire made with this composition according to usual Method coated had a coefficient of friction of 0.15, whereas using the same Mixture, but without polysiloxane, a coefficient of friction of 0.19.

Example 10

This example demonstrates the utility of the polyester-polysiloxane polymer in which the siloxane becomes associated with the ingredients during manufacture of the polyester resin. The following ingredients are placed in a four-necked flask equipped with a stirrer, thermometer, gas inlet and heated condenser:

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009830/1639

46 3 31 8th 23 2, ο,

Ingredient Le parts by weight

Dimethyl terephthalate, ethylene glycol.
TriraethyloLpropane
Carboxyethyl methylpolysiloxane zinc acetate

(and a sufficient amount of Cyclic or Cresylic Acid for an anectropic distillation)

These reaction products will: 30 I-inutes heated to 130 ⁰ C. The zinc acetate catalyst is then ^{increased to 40 l} G and kept at this temperature for three hours. The temperature is then increased to 250 and the viscosity is monitored, i.e. the end of the reaction Anse_gt. This period is about half an hour. Then the reaction stops and the Har :: is quenched with cresylic acid. Then the Harr is diluted to 30 % pesticides with a mixture of 1: 1 gresylorthocresolic acid and aromatic hydrocarbons and transfers it to the wire as a primer in several layers.

BATH ORIGINAL

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00-9830 / 1639

a coefficient of 0.130% while the commercial polyester product has a coefficient of friction of 0.347.

Example 11

Another resin was prepared as in Example 10 from the following combination:

Components parts by weight

Dimethyl terephthalate 460

Ethylene ^ lycol 210

TrihydroxyätbyLisozyanur 200

Triraethylol propane 130 Dipbenylsilar diol 23

Zinc acetate 0.08

(and a sufficient Keneje of xylene or gresylic acid for an azeotropic distillation)

The obiice resin was diluted in a mixture of cresyl acid and aromatic hydrocarbons so that the solids content was 30% . Then were added tetrakis (2-Äthylhezyl) titanate added in a

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00983Ü / 1639

Amount of 2 $> of the solution as a co-reacting catalyst. As in Example 1, a bare copper wire was coated using this solution. The final product had a coefficient of friction of 0.147 while the commercial polyester-coated product had a coefficient of friction of 0.347.

Example. 12 ^

Components parts by weight

Conventional polyurethane paint for wire 98

Methybktylpolysiloxane 2

Diet coated with the above mixture a coefficient of friction of 0.097, while a wire without the polysiloxane content has a coefficient of friction of 0.18.

Although in all of the above examples the wire is coated with the modified resins from solution, the resin can also be applied to the wire in the solid state by extrusion, without doing the desirable good properties conferred by the invention are lost.

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Claims (1)

Patent claims 1. ksolierraateria L with low ^ e ^ coefficient of friction for Jrabt, especially for electroma ^ nets, coils, windings or di ^ L. , marked by a) 0.01 to 25 ^c /> of a zv / eiditncnsiona le n linear polysiloxane of the general formula R ₅ O- Si-O R. -Si - 0 - R, in which R. is an alkyl and / or aryl with 1 to 20 carbon atoms, R ^ is an alkyl or alkylaryl radical or a side chain with 1 to 20 or more carbon atoms, R is an alkyl radical and / or -H, -OH or -COOH and wherein the ratio of R.: Rp groups is in the range from 1: 1 to 4: 1 and η = 2 to 10 or more or b) an alkyl / arylsilanediol and WR / Si -35- 009830/1639 c) 75 to 99.99 wt .- $ of a resin from the group of polyesters, polyamides, polytrinellitamidimides, polyvinylbutyral, polyvinylfor.i-jl, polyvinylforma! phenol, polyvinylformal isocyanate, polyurethanes, epoxides, acrylics, alkyds, polycarbonates, Polypropylene, polyhydantoin and their combinations, with the Radika Igle _; .oh weight of these combinations is made so that there is a low in the reaction product of a) or b) with c). Coefficient of friction results. 2. Materia L according to claim 1, characterized in that the polysiloxane and the resin are blocked or emulsified in water are. ?. Electrical conductor, characterized by an applied outer resin-like coating, consisting essentially of a carder made of polyester, polyamides, polytritnellitaraidide, Polyvinyl butyral, polyvinyl fortnal, polyvinyl form Lptienol or Polyvinylfortraiisozyanat, Polyurethane, Epoxy, acrylic, alkyd or a mixture of these, the resin being 0.01 to 25% by weight of a two-dimensional linear organic polysiloxane 5 of the following general terms Contains fornel ^ '- -36-00983U / 1 639 R ₃ -Si-O ι. -Si-O- - ¹ η Si - R, in which R _{1 is} an alkyl and / or aryl group with 1 to or more carbon atoms, R "is an alkyl or alkylaryl group or a side chain with 1 to 20 or more carbon atoms and R- is an alkyl group, a polyoxyalkylene ether or -H, - OH or -COOH and η = 2 to 10 or more. 4. Head according to claim 3 »characterized in that a primer layer under the outer coating owns on synthetic resin base. 5. A ladder according to claim 4, characterized in that the outer coating consists of a nylon as a resin component and an alkylarylsiloxane as an organic polysiloxane. 6. conductor NACB claim 4, characterized eiekennzeicbnet that the outer coating consists of a polyethylene terephthalate as a resinous component and a Aikylarylsiioxan as organic polysiloxane besteh ^4. -37- 009830/1639 7. Head according to claim 4 »characterized in that the outer coating consists of a polyamide-imide resin and an alkylarylsiloxane. 8. A ladder according to claim 4, characterized in that the organic polysiloxane is an alkylarylsiloxane in one Amount from 0.1 to 5 9. Electrical conductor with a resinous Isoliermateri- M alschicht, characterized in that it consists of a hardened reaction product a) an acid from the group of the Terepbtbal-, Isophthalic acid and dimethyl esters, b) from ethylene glycol, c) a saturated aliphatic polyhydric alcohol like having three or more OH groups and d) a siloxane of the general formula IL-Sl-O ¹ ■ ι 1-0 -Si-OH -38-009830 / 1639 in which R _{1 is} -CH ₃ , -COOH, -OH, - (CHg) ₂ OH or phenyl, R _{2 is} -CH ₅ , - (CHg) ₂ OH, phenyl or -OH and η is 2 to 10 or more, the ratio of the total -OH groups in component b), c) and d) to the -COOH or -COCH ^ groups in compound a) being in the range of 4: 1 to 1: 1. 10. A ladder according to claim 9, characterized in that the compound d) is diphenylsilanediol. 11. A ladder according to claim 9, characterized in that the acid is terephthalic acid and the compound b) is trimethylolpropane is. 12. Copper or aluminum wire with an insulating material with a resinous primer and a slippery, hardened outer coating based on nylon, which is 0.1 to 5 wt .- # of an organic polysiloxane is modified. 13.Polyester-based copper or aluminum wire coating, which is modified with 0.1 to 5 wt .- # of an organic polysiloxane. 14. Coating based on polyamide-imide, which is modified with 0.1 to 5% by weight of an organic polysiloxane. 009830/1639