NL8005771A - COLD VULCANIZABLE RUBBER COMPOSITION. - Google Patents

Description

* * * - 1 -

Cold vulcanizable rubber compound.

The invention relates to a cold vulcanizable rubber composition which cures under anaerobic conditions.

Anaerobically cured adhesive compositions 5 are known and their use is becoming increasingly important in the industry for applications such as seals, gaskets and in connection with the adhesive properties.

Anaerobic seals are used in practice in a form ranging from aqueous to lightweight grease consistency. The composition in this form "wets" the surface to be bonded.

There are drawbacks to the conventional anaerobic compositions currently on the market due to certain uses thereof.

The fields of application of anaerobic compositions can be widely expanded if the composition is in a form with solid properties. In addition, in many areas of application, such as packings, the polymerized (cured) composition is required to be solvent resistant and to retain its flexibility.

Synthetic rubbers have many of the desired properties, but their use is limited due to the relatively drastic means required to cure the rubber, such as high temperatures or irradiation.

The present invention combines the rubber technology and the anaerobic technology to obtain a rubber composition, which can be cured under anaerobic conditions.

An anaerobic system is usually defined as a system which remains stable in its compounded form in the presence of oxygen, but which polymerizes to a higher polymer state in the absence of oxygen. In effect, this means that the presence of oxygen prevents polymerization (curing) 80 05 77 1 - 2 - or. slows down.

Preferably anaerobic curing takes place at ambient temperatures; however, the degree of polymerization is a function of the monomer, the initiator, and whether or not inhibitors and / or accelerators are present.

Thus, the term anaerobic curing has been and is used to refer to polymerization, which also occurs at a temperature higher than ambient temperature, the primary factor being that curing is inhibited by the presence of oxygen, but occurs in its absence or at reduced oxygen concentration. Elevated temperatures and / or metals will further accelerate polymerization.

According to the invention there are provided anaerobically curing rubber compositions, which can be used preferably as sheets, tires and the like, and which, when cured, have rubber and flexible properties.

For convenience, the curing process of the compositions of the invention will be referred to as "cold vulcanization" and this term has been defined as an anaerobic curing process of liquid long chain segments or unvulcanized resin or rubber in higher molecular weight polymeric material. weight with appropriate cross-link density values to ensure rubber-like properties.

The rubbery properties (rubber elasticity) are all those properties from a high elastic response to a tough flexible material with a high modulus of elasticity. A definition of rubber elasticity can be found in F.W, Billmeyer's Textbook of Polymer Science (John Wiley & Sons, Fourth Printing, 1966), biz. 189.

The composition of the invention comprises a synthetic rubber composition in combination with one or more anaerobic resins, one or more initiators, an accelerator and an inhibitor.

The synthetic rubber composition may further contain 80 05 77 tonnes - 3 fillers such as titanium dioxide. glass, nylon fibers and / or Teflon.

In one embodiment of the invention, the anaerobically hardening rubber composition is formed in a tape or ribbon and may be coated with nylon or another polymer. A tape or ribbon is defined as a manufactured article in which the width is less than the length dimension.

Generally, the synthetic rubber has a molecular weight of about 50,000 to 500,000 and is present in a range of about 30 to about 80% by weight based on the total weight of the total composition. The anaerobic monomer, which must be soluble or completely miscible with the synthetic rubber, is present in an amount from about 70 to about 20% by weight based on the total weight of the resin.

Fillers, if present, are present in an amount of from about 5% to about 20% by weight of titanium dioxide, glass and / or nylon fibers, and from about 0% to about 10% by weight of Teflon. Both weights are based on the total weight of the synthetic rubber.

One or more initiators, in a total amount ranging from about 0.1 to about 7% by weight of the weight of the anaerobic monomer, are incorporated into the composition.

Accelerators, if present, are in an amount from about 0.1% to about 7% by weight.

Inhibitors are in the range from about 25 to about 1000 ppm.

The invention relates to compositions which, when anaerobically cured, have rubbery properties.

As used in the present invention, the term anaerobic monomer includes a monomer having at least one and preferably two polymerizable acrylate ester moieties, usually at the ends of a hind leg, that will polymerize or cure in 80 05 77 1 - 4 presence. of an initiator in the principal exclusion of oxygen or air.

One of the most preferred groups of anaerobic monomers to be used in the invention are the polyacrylate esters of the following general formula: 0 / rA R ~ 0

II ƒ 1 112 II

H0C = C - C - 0 - (CH0) _ —FC-JC — 0 - C - C = CH0 2 | 2 2 m I l3T | , 2 2

R I R / R R

Wherein R is a radical selected from the group consisting of hydrogen, lower alkyl of 1 to about 4 carbon atoms, hydroxyalkyl of 1 to about 4 carbon atoms, and 0

II

- CH- - O - C - C = CH0

2 12 2 R

2 wherein R is a radical selected from the group consisting of hydrogen, halogen and lower alkyl of from 15 to about 4 carbon atoms, R is a radical selected from the group consisting of hydrogen, hydroxyl and O

II

- O - C - C = CH0 k2 m an integer equal to at least 1, for example from 1 to about 15 or higher and preferably from 1 to 8, n an integer equal to at least 20 1, for example 1 to 20 or more, and p selected from 0 or 1.

As non-limiting examples of the polyacrylate esters used in the invention and corresponding to the above general formula, the following materials may be mentioned: di, tri-8005771 * 4-5 and tetramethylene glycol dimethacrylate, dipropylene glycol dimethacrylate, polyethylene glycol dimethacrylate, di (pentamethylene glycol) dimethacrylate, tetraethylene glycol diacrylate, tetraethylene glycol di (chloroacrylate),. digly-5-ol diacrylate, diglycerol tetramethacrylate, tetramethylene dimethacrylate, ethylene dimethacrylate, meopenyl glycol diacrylate, trimethylol propane triacrylate, the reaction product of hydrogenated bisphenol A with 2,4-tolylene diisocyanate methyl 2-hydroxymethacrylate methyl methacrylate methyl ether acrylate or 3-hydroxy methacrylate. The above-mentioned monomers need not be in a pure state, but may be commercial degrees incorporating inhibitors or stabilizers such as quinones.

Monoacrylate esters, especially those esters, in which the non-acrylate portion of the ester contains a hydroxyl, mercapto, or amino group or other reactive substituent, which serves as a site for possible cross-linking with itself and / or the synthetic rubber compound.

The choice of the anaerobic monomer which can be used in the invention depends on the special synthetic rubber chosen. The anaerobic monomer must be soluble or completely miscible with the synthetic rubber composition.

The solubility or miscibility of the monomer in the rubber can easily be defined as follows: (1) if the synthetic rubber is a liquid and the anaerobic monomer is a liquid, visual inspection must demonstrate solubility or miscibility; (2) If the synthetic rubber has solid properties, the compounded material must be applied to paper after mixing the monomer with the rubber. An oily wet spot appears on the paper if the monomer is not soluble in or completely miscible with the rubber.

The term copolymer, as used in the invention, includes those well known 80 05 77 1 - 6 - synthetic rubber copolymers, which are preferably polar and of sufficiently high molecular weight so that their viscosity is sufficiently high to form stable compositions with the monomers. The preferred copolymers have terminal and / or pendant vinyl or reactive sites for possible reactions with the anaerobic monomers, and are preferably unvulcanized gummies.

Examples of copolymers or rubbers that can be used in the invention are acrylonitrile / butadiene copolymers with reactive end groups such as carboxy, mercapto or amino; polybutadiene; polyisopropene; butadiene / styrene, polyurethanes and acrylonitrile / butadiene / styrene.

The acrylonitrile / butadiene is available from B.F. Goodrich Co. under their trade name Hycar and the preferred copolymer has an average molecular weight ranging from about 50,000 to about 500,000.

The butadiene styrene copolymer is indicated as SBR and generally has a butadiene sphenrene ratio of about 78:22,

The acrylonitrile / butadiene / styrene copolymers preferably have an average molecular weight of about 5000 to about 100,000 and contain from about 15% to about 35% acrylonitrile and from about 15% to about 35% butadiene.

The catalyst or initiator for this system consists of a peroxy compound and a co-initiator.

The preferred peroxy initiators are the hydroxy-peroxy initiators, and most preferably the organic 4 4

hydroperoxides, which have the formula R OOH, wherein R

generally a hydrocarbon radical of up to about 18 carbon atoms, preferably an alkyl, aryl or aralkyl radical containing from 1 to about 12 carbon atoms. Typical examples of such hydroperoxides are cumene hydroperoxide, tertiary butyl hydroperoxide, and methyl ethyl ketone hydroperoxide.

However, other peroxy initiators, such as hydrogen peroxide, dihydroperoxides or materials such as certain organic peroxides or peresters, which hydrolyze or decompose to form hydroperoxides and dihydroperoxides may also be used. Examples of such peroxygen initiators are benzoyl peroxide and 2,5-dimethylhexyl-2,5-dihydroperoxide. These compounds are known in the literature.

Co-initiators which can be used in the invention are the known hydrazine derivatives, which are capable of initiating free radical polymerizations at temperatures below about 100 ° C, and in particular compounds of the formula

O

1 '2 R-N-N-C-R I I Η H

wherein R 1 may be selected from the following radicals: alkyl, preferably lower alkyl of 1-6 carbon atoms, either straight chain or branched, more especially methyl, ethyl or isopropyl; cycloalkyl to about 8 carbon atoms; alkenyl to about 10 carbon atoms; preferably 2-5 carbon atoms; cycloalkehyl containing up to 10 carbon atoms, preferably up to about 6 carbon atoms; aryl, including halo-substituted aryl, hydroxy-substituted aryl, nitro-substituted aryl, and aryl, substituted by lower alkyl or alkoxy groups, containing from 1 to about 6 carbon atoms. R may be hydrogen or one of the radicals specified for R, and in addition it may be an amino or substituted amino group, or a carbonyl group to which is attached a non-reactive group such as a lower alkyl, which is from 1 to about 4 contains carbon atoms.

Examples of representative compounds of the above formula, although the invention is not limited to, include 1-acetyl-2-phenylhydrazine, 1-acety1-2- (p-tolyl) hydrazine, 1-benzoyl-2-phenylhydrazine , 1- (1 ', 1', 1'-trifluoro-acetyl) -2-2-35-phenylhydrazine, 1,5-diphenyl-carbohydrazide, 1-formyl-2-phenylhydrazine, 1-acety1-2- (p- bromophenyl) hydrazine, 80 05 77 1 -8- 1-acety1-2- (p-nitrophenyl) hydrazine, 1-acetyl-2- (p-methoxyphenyl) hydrazine, 1-acety1-2-2 (2'-phenylethyl) -hydrazine and 1-acety1-2-methylhydrazine.

The efficiency of the accelerators of the invention appears to require the presence of a proton on each of the nitrogen atoms, but no more than one proton on each nitrogen atom. If this criterion is met, the more precise nature of the R groups does not appear to be critical, provided, of course, that the R groups are not chosen to interfere primarily with the storage properties of the adhesive composition or with the action of the accelerator for its intended purpose.

Thus, the selection of specific R groups and combinations thereof seems to be a matter of experimentation and selection. It will, of course, be apparent to those skilled in the art that an optimal selection of R groups depends on the curable ester monomer or monomer mixtures, as well as the initiator or any co-accelerator used. The accelerators can be used in concentrations from about 0.001 to about 10 or more percent by weight based on the total composition. Little effect will be observed below this lower limit. The upper limit is not critical since significant improvement is usually not found above concentrations of about 5% by weight. As a practical matter, a concentration range of 0.1-2.0% by weight will give an optimum overall effect and this range is therefore preferred.

Accelerators are also carefully used in the compositions of the invention. Examples include organic amides such as formamide and succinimide and the like; tertiary amines such as tributylamine and triethylamine and the like, aromatic tertiary amines such as dimethyl p-toluidine and the like; and organic sulfimides such as benzoic sulfimide and the like. In the presence, accelerators are available in an amount from about 0.1 to about 7 wt%, and preferably between 2 and 3 wt%.

80 0 5 77 1 «•’ s - 9 -

Stabilizers or inhibitors used in the invention include benzoquinone, naphthaquinone, hydroquinones, hydrochynone monomethyl ether, spherically hindered phenones, and the like. The concentration of inhibitors ranges from about 25 to about 1000 ppm.

The products of the invention may contain any other ingredients which do not materially alter the anaerobic properties in interfere with the treatment of the compositions. Examples of such additional ingredients are fillers such as titanium dioxide, Teflon, glass, nylon fibers and the like, which are usually added to the copolymer for convenience; colorants, plasticizers, and the like.

The compositions or products of the invention can be prepared in a number of ways, such as, for example, in the form of films, tapes, sheets or applied to a removable support. The composition can be extruded, rolled, or deposited from a solution slurry or latex, depending on the intended application for the product and the physical properties of the compounded formulation.

The solution, suspension or latex can be used as is without an intermediate deposit on another support, and used, for example, as a paint.

The products formed from the compositions of the invention have particular effectiveness when used as tapes on threaded members such as pipe fittings. In this application, the invention replaces the currently used Teflon tape and gives superior sealing results and is resistant to the effects of pressure and solvents. When cured, the product will retain its flexible properties and when applied to threaded members such as pipe threads, the cured product will provide both a sealing and locking function.

80 05 77 1 - 10 -

For ease of storage and use, the compositions of the invention may be coated with a thin layer of polymeric material, e.g., nylon. The polymeric coating must be thick enough to allow the tape to roll off and prevent it from sticking, while it must be thin enough to allow air to penetrate through the coating to the tape. When coated with a polymeric coating, the coating material should be soluble in alcohol, and it is usually deposited on the unvulcanized polymeric composition from an alcoholic solution, preferably methanol. Nylon 6-12 (DuPonts Elvamide 8061) and Nylon 12-12 (Vestamid X1874, X2191 and X2302) have been used for coatings.

The products of the invention described herein, whether in their natural or pre-applied form, are storage stable, able to withstand normal storage and transport conditions. They will not polymerize (cure) as long as they are kept in reasonably thin sheets (such as, for example, 1.25 cm or less) and are in contact with air or other oxygen sources. When they are confined between non-porous surfaces or otherwise placed in an oxygen-free atmosphere, the composition hardens. The cured product has the properties of a vulcanized rubber, and may consist of the reaction product of the copolymer and the monomer, the interweaving of the copolymer into the polymerized monomer, or a combination of both.

The polymerized product, which has the properties of a vulcanized rubber, is distinguishable from the non-polymerized reaction products in that it is extensible. The unpolymerized reaction products are soluble in organic solvents, while the polymerized product is insoluble or non-extractable by organic solvents. The polymerized product is at least 75% and preferably 80% non-extractable.

80 05 77 1 - 11 -

The product, formed after curing, retains its flexibility, forming a seal that withstands 1500 to 2500 psi pressure and is resistant to solvents. These properties are maintained over a wide temperature range from about -65 to about 400 ° F.

Although curing usually takes place at room temperature, the time required to achieve curing can be shortened by subjecting the assembly containing the composition to moderate temperatures, such as about 10OF to about 200F.

The sodium salt of ethylenediamine tetraacetate, when used in the formulation, can be added either to the monomer composition or to the copolymer monomer composition.

Examples.

The following examples are given to demonstrate typical compositions within the scope of the invention as described herein, and methods for preparing and using these compositions.

These examples are not intended to limit the invention. Unless otherwise indicated, all ratios and percentages in the examples are by weight.

Example I,

An anaerobically-curable polymerizable monomer formulation was prepared by mixing the ingredients described in Table A below in the indicated ratio: Table A.

Ingredients Weight (gr.)

Polyethylene glycol dimethacrylate (average molecular weight 330) 100 l-acetyl-2-phenylhydrazine 0.002 35 benzoin sulfimide 1.6 cumene hydroperoxide 3.0 1,4-p-naphthaquinone solution (100 ppm in methanol) 0.2 80 0 5 77 1 - 12 -

To a mixture containing 50 g of acrylonitrile / butadiene (Hycar 1492) and 20 g of titanium dioxide mixed in a Waring mixer, 25 g of the mixture of Table A and 1 g of a solution of sodium ethylene-5-diamine tetraacetate ( 73.5% methanol, 23% water and 3.5% sodium ethylenediamine tetraacetate).

The resulting mixture was processed in a rubber roller mill until the chunks disappeared, then extruded through a slot about 20 mils thick. The extruded material was then passed through water-heated forming rolls (only one roll was heated) with a gap of about 0.003 mil.

The resulting material, which was in hand shape with a thickness of about 0.002-0.250 inch, was applied to a removable paper strip and wound on take-up reels.

Example II.

A copolymer - anaerobic monomer mixture was prepared as described in Example I.

The resulting mixture was extruded through a slit about 20 mils thick. The extruded material was then passed through modified heated forming rollers as in Example I.

Leaving the forming roll (calender rolls), the material was passed through a nylon 6-12 solution (6-7% nylon 6-12 in methanol) and then through a column of air heated to about 52 ° C. The methanol was evaporated in the heated air process, the rubber band being coated with a layer of nylon of about 0.5-1.0 mil thick, and the coated band was then wound on a paper spool without any paper layer around the band layers to separate.

Before using this tape, the tape is placed on the threads and stretched to break the nylon cover.

Example III.

To a mixture consisting of 50 g of acrylonitrile / butadiene (Hycar 1492), 19.5 g of titanium dioxide and 0.5 g of Teflon, mixed in a Waring mixer, 80 g of 5 77 1 - 13 was added 30 g of the mixture of Table A and 1.5 g of a solution of sodium ethylene diamine tetraacetate (73.5% methanol, 23% water and 3.5% sodium ethylene diamine tetraacetate).

The resulting mixture was treated in a rubber roller mill until the chunks disappeared and then extruded through an approximately 20 mil thick slit mold. The extruded material was then passed through a moderately heated forming roll as described in Example I.

Leaving the calender rolls, the material was passed through an about 6-7% nylon 6-12 solution (in methanol) and then through a column of air heated to about 52 ° C. The methanol was evaporated in the heated air process, the rubber band being coated with a layer of nylon.

In uncured condition, this tire had an excess storage life of 1 year. In the cured state, the tape had a pull-out percentage of 470%, a tensile strength of 981 psi, and a workability range from about -65F to about 400 ° F.

This tape was applied to a 3/8 inch wrought iron T-joint and twisted to 30 ft.-lbs, and subjected to durability tests with the following 25 results: a) Seals, immediately after mounting, or when cured for 24 or 48 hours, showed no leak when subjected to hydraulic pressure greater than 2000 psi; B) no leakage occurred when the mounted tees (hardened for 24 hours) were subjected

at temperatures from about 20 (¾1 to about 400 ° F

over a period of 500 hours, and subjected to pressures of about 1500 psi; C) no leak occurred at pressures up to 3000 psi (after the assembled tees were cured for 24 hours), when dipped in the following solvents at the temperatures indicated for 8 weeks: transmission fluids (300 ° F; engine oil (300 ° F); 80 0 5 77 1 - 14 - 50% glycol / water (270 ° F); gasoline (180 ° F) and air (18 8 ° F); d) various tees (hardened for 24 hours) exposed to 95% humidity at 100 ° F for 1000 hours showed no leakage after pressure testing up to 2000 psi.

Example IV.

A mixture was prepared and the process of Example 1 was repeated, except that 10 t-butyl hydroperoxide was used instead of cumene hydroperoxide.

Example V.

To a mixture of 75 g of acrylonitrile / butadiene (Hycar 1494) and 20 g of titanium dioxide, mixed in a 15 Waring mixer, 25 g of the mixture according to Table A and 1 g of a sodium ethylenediamine tetraacetate solution (73.5%) were added methanol, 23% water and 3.5% sodium ethylenediamine tetraacetate).

The resulting mixture was treated in a rubber roller mill and passed through calendar rollers to obtain a filler of 0.002 inch thickness.

Example VI.

To 186 g of a 20% Hycar 1492 solution in methylene ethyl ketone, 40 g of triethylene glycol dimethacrylate were added successively to ensure complete dissolution of a compound or mixture prior to the addition of the next compound or mixture, 22.5 g of an 80% solution in toluene of a dimethacrylate formed from the reaction product of toluene diisocyanate hydrogenated bisphenol A and 2-hydroxyethyl methacrylate, and 2.4 g of 2,5-dimethyl-hexyl 2,5-dihydroperoxide. The temperature during the additions was kept below 40 ° C.

The resulting mixture was applied to a removable paper and the solvent evaporated, leaving a dried uncured film of 0.002 to 0.010 inch thickness. The drying of the 80 05 77 1 - · - 15 - film (evaporation of the solvent) should be done at no higher temperature than 52 ° C.

Example VII.

Acceptable uncured tape and sheet materials were obtained using the following copolymers and anaerobic monomers according to the procedure of Examples I, II and / or V.

Copolymer Monomer a) butadiene / methacrylate polyethylene glycol diol with pendant unsaturation methacrylate b) acrylonitrile / butadiene lauryl methacrylate c) butadiene / styrene tetramethylene glycol dimethacrylate d) acrylonitrile / butadiene with 3-hydroxypropylmethane-terminal carboxyrene styrene-styrene-styrene-butyrene / 20% pentethylene glycol dimethacrylate f) butadiene / acrylate / methapentaethylene glycol dicrylate methacrylate 20 g) acrylonitrile / butadiene 2-hydroxyethylene methacrylate.

The processing of the final product by extrusion, calendering or deposition from a solution depends on the ease of processing and the physical properties of the product. Most products are rubber or compliant solid material, which can be extruded without applying an excessive amount of force. If the product is of a kind that cannot be easily extruded, it can be processed by calender rolls or by deposition from solution.

Conclusions.

80 05 77 1

Claims (22)

Cold vulcanizable rubber composition, characterized in that it consists of a) about 30 to about 80% by weight of a copolymer selected from the group consisting of acrylonitrile / butadiene having an average molecular weight of about 50,000 to about 500,000 and with terminal or pendant vinyl groups, acrylonitrile / butadiene with terminal reactive carboxy, mercapto or amino groups, polybutadiene, polyisoprene, acrylonitrile / 10-butadiene / styrenes, and butadiene / styrenes, b) about 70 to about 20 wt% of an anaerobic monomer, which is soluble in or miscible with the copolymer, c) about 0.1 to about 7% by weight of a catalyst system based on the weight of the anaerobic monomer, d) an accelerator, and e) a stabilizer, wherein the composition is capable of being polymerized under anaerobic conditions to a high molecular weight material with vulcanized rubber-like properties; and with at least 75% non-retractable solids. 2 I2 2 A2 2 In wherein R 1 is a radical selected from the group consisting of hydrogen, lower alkyl from 1 to about 80 05 77 1 - 17 - 4 carbon atoms, hydroxyalkyl from 1 to about 4 carbon atoms, and 0 11 -CH -OCC-CHL 2 12 2 R * 2 R is a radical selected from the group consisting of 5 consisting of hydrogen, halogen, and lower alkyl of 1 to about 4 carbon atoms, R a radical selected from the group consisting of hydrogen, hydroxyl, and O 0. C - C - CH, 12 while m is an integer equal to at least 1, 10 n an integer equal to at least 1, and p is selected from 0 or 1. 2. Composition according to claim 1, characterized in that the anaerobic monomer has the following formula: O Γ O II fill Ü 3. A composition according to claim 2, characterized in that the copolymer is acrylonitrile / butadiene having vinyl terminated or pendant groups and having an average molecular weight of about 50,000 to about 500,000. 4. A composition according to claim 3, characterized in that it contains a filler in the range from about 5 wt% to about 20 wt% based on the total weight. A composition according to claim 3, characterized in that the catalyst system contains a peroxy initiator selected from the group consisting of hydrogen peroxide, hydroperoxides of the general 4 4 formula R.OQH, wherein R is a hydrocarbon radical having 1-12 carbon atoms selected from the group of alkylaryl and aralkyl, peroxides, peresters and dihydro-peroxides, and as a co-initiator a hydrazine derivative, capable of initiating free radical polymerization at temperatures below about 100 ° C. 80 05 77 1 - 18 - 6. A composition according to claim 5, characterized in that the peroxide initiator consists of cumene hydroperoxide, and that the co-initiator is 1-acetyl-2-phenylhydrazine. 7. A composition according to claim 6, characterized in that the accelerator is selected from the group consisting of organic amides, tertiary alkyl amines, aromatic tertiary amines, and organic sulfimide. 8. A composition according to claim 7, characterized in that the accelerator is an organic sulfimide. 9. A composition according to claim 8, characterized in that the organic sulfimide is benzoic sulfimide. 10. A composition according to claim 9, characterized in that the stabilizer is selected from the group consisting of benzoquinone, naphthaquinone, hydroquinone, hydroquinone nonomethyl ether, and sterically hindered phenols. 11. A composition according to claim 10, characterized in that the stabilizer consists of naphthaquinone. 12. A composition according to claim 11, characterized in that the anaerobic monomer is polyethylene glycol dimethacrylate. 13. A composition according to claim 12, characterized in that the polyethylene glycol dimethacrylate has an average molecular weight of about 330. 14. A composition according to claim 13, characterized in that the copolymer is present in an amount from about 60 to about 75% by weight. 80 05 77 1 - 19 - The composition according to claim 14, characterized in that the anaerobic monomer is present in an amount from about 20 to about 50% by weight. 16. A composition according to claim 15, characterized in that the filler is selected from the group consisting of titanium dioxide in an amount of from about 5 to about 20% by weight and Teflon in an amount from about 0 to about 10% by weight. and that the total weight of filler does not exceed 20% by weight, which weight is based on the total weight of the composition. 17. A composition according to claim 16, characterized in that the filler is a mixture of titanium dioxide in the range from about 18 to about 19.5 wt% and Teflon in the range from about 0.5 to about 2 wt. %. 18. A composition according to claim 16, characterized in that the filler is titanium dioxide in the range from about 18 to about 20% by weight. An article formed from the composition of any one of claims 1, 3, 5, 6, 8, 9, 10, 11, 13, 14, 15, 17, or 18, characterized in that it is formed as a tape with a thickness in the range from about 0.002 to about 0.250 inch, intended for use as a sealant. 20. An article formed from the composition of claim 18, characterized in that it is in the form of a tape having a thickness in the range of from about 0.002 to about 0.250 inches intended for use as a sealant, and said tire is coated with a polymeric coating in a thickness of about 0.5 to 1 mil, this coating allowing air to reach the rubber composition. 80 05 77 1 - 20 - 21. Object according to claim 20, characterized in that the polymer coating consists of nylon 6-11. 22. Object formed from the composition 5 according to claim 1, 3, 5, 6, 8, 9, 10, 11, 13, 14, 15, 17, or 18, characterized in that the object is in the form of a sheet with a thickness in the range of from about 0.002 to about 0.015 inch, and intended for the preparation of packing material and as a backing material. »80 05 77 1