DE3337728A1 - METHOD FOR THE CASTING OF RUBBER ON GLASS AND ITEMS PRODUCED THEREOF - Google Patents

Description

AGES 8210/83

"Process for casting bonding rubber on glass and articles manufactured therefrom"

This invention relates to a method for the casting connection of rubber on glass and the products obtained thereby.

Processes for joining rubber by casting are known Metal supports in general, with the rubber being intimately molded by means of a vulcanization step Brings adhesion to the metal, so that a composite article of manufacture results, its components can no longer be separated, the rubber-metal connection is then made by chemical and physical means, mechanical influences and aging factors not influenced.

The present invention seeks to provide a method of firmly cast bonding rubber onto a glass substrate generally create to produce composite articles of rubber and glass where corresponding the rubber-to-glass bonding process of the glass during The rubber adhering to the stage of maturity binds tightly to the glass, and so does the joint is not influenced by mechanical stresses, chemical and physical means and aging.

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AGES 8210/83

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The method of casting bonding rubber on glass according to the invention is characterized in that a chemical-molecular bond between rubber and glass during the dimensional conformation of the Rubbers and during the simultaneous deformation of the rubber from the plastic to the elastic Phase is generated by the combined action of time, heat and / or pressure.

In particular, to carry out the procedure a specially formulated polymer mixture and a correspondingly special base layer created that percentage is in the ranges given below, the method comprising the following sequential steps:

-Glass degreasing

-Application of a base layer (primary) -Application of an adhesive

-Heat aging

- Placing in a mold

- Injection, transfer or die casting

- Removal, cleaning and finishing of the product.

AGES 8210/83

According to the invention is preferably one elastomeric blend having the following general Formula used:

- one or more polymers in percentages between 20% and 50% and selected from the following group:

Chloroprene (CR), ethylene propylene (EPR), Ethylene Propylene Diene (EPDM), natural rubber (NR), polyisoprene (IR), styrene butadiene (SBR);

-non-staining anti-aging and anti-oxidation in percentages up to 5%, the are specific to the polymers used;

- reinforcing fillers and / or organic batches in percentages from 30% to 70%;

-Plasticizer from 5% to 60%;

-Accelerator (specific to the polymers used) from 0.5 % to 3%.

For the GiasenLfeLtcn it is advantageous to use a mixture of organic solvents C e I ve-r containing compounds of the π I i ρ h £ i L isch ο η ti η d / ο the .iromaL i see series or products; inori; an i.srhcr and / or organic nature (side- Demi very) on a watery basis.

AGES 8210/83

When the degreasing process is finished, the glasses are that are to be connected to the rubber with a Base layer from a solution natural and / or synthetic polymers in aliphatic and / or aromatic solution with stabilizers and reinforcing agents Treats fillers.

The general formula of the solution is as follows:

- one or more polymers from 7 to 35%, selected from the group of natural rubber, chloroprene, polyisobutylene, polyethylene, Chlorosulfonates;

- mineral and organic fillers from 0.1 to 50% consisting of one or more compounds selected from the group consisting of silica, aluminum and

Magnesium silicate, magnesium silicate, calcium carbonate,

Titanium dioxide, carbon black, organosilicon substances (Organosilanes)

After drying, the said base layer is covered with a Glue herkömni 1 hole composition coated, preferably mi. t an organic polymer solution in an appropriate mixture of organic solvents ·

AGRS 8210/83

For a better understanding of the invention, some practical examples are given below: how this process of pouring rubber on glass is carried out, namely below Reference to the accompanying drawings is therein

1 shows a cross section of a glass pane with a U-shaped peripheral seal cast on;

Fig. 2 is a cross-section of a pane of glass with an applied seal, which with a clad metal or plastic channel is provided so that it can be used as a glass walkway can; and

3 and 4 are cross-sections similar to the preceding ones showing the composite of rubber elements to illustrate on glass; they should work together with corresponding sheet metal parts.

In the drawings, G denotes the rubber element, K denotes the glass and L denotes the sheet metal part.

The connection procedure goes like. follows in front of you:

AGES 8210/83

- 11 Example I

Glass K is degreased at least in the connection area Z with the rubber; any organic solvent from the aliphatic is used for this
or organic series or a mixture of such solvents.

This stage can be used in conjunction with any of the following known methods:
Immersion, brushing, ultrasound treatment, spraying, evaporation of the solvent.

After degreasing, the base layer is applied to the area Z intended for the rubber connection. This is best done by covering the remaining part of the glass pane; the base layer is either brushed on, sprayed on or
the piece is immersed.
This base layer has the following composition:

Components Concentrations (%) Polyisobutylene 20th Al and Mg silicates 40 Carbon black 5 Organosilanes 5 solvent 30th

AGES 8210/83

After drying, the zone Z intended for gluing is coated with an adhesive; this layer can be applied in the same way as

the base layer.

As mentioned earlier, the glue can be any be a commercially available product, preferably a polymeric organic solution in an appropriate mixture of organic solvents.

This is followed by a heat maturation stage with a duration of about 30 seconds at a temperature of about 100 ^° C.

The glass thus pre-treated is then placed in a mold where the elastomeric mixture is cast by any of the following conventional casting processes:
Injection, transfer or die casting.

The elastomeric mixture used has the following composition:

AGES 8210/83

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Components: Concentration (%) Chloiöpren 50 mineral fillers 30th Antioxidant. teJ 2 accelerator 2 Plasticizer 21

After maturing, this compound has the following properties:

-Density (g / cm3) 1.40

-CK (kg / cm2) 100

-AR (%) '280 -LAC (kg / mm) 2

-HS (Shore A) 60

After removal, cleaning and finishing takes place in order to get a finished product. The product is characterized by an intimate Bonding of the rubber with the glass as a result of the mutual penetration of the adhesive layers in between with each other and with the rubber.

AGES 8210/83

-U-

Example II

The same procedure is used as in Example I, but using a base coat the following composition is used:

-Natural rubber 35%

-Calcium carbonate 25%

-Carbon black 5%

Organosilanes 5%.

Solvent 30%

and an elastomeric blend with the following

Composition:

-Natural rubber 50%

-Antioxidant 1-% '

-Plasticizer 13%

-organic filler 35%

Accelerator 1%

ACKS 8210 / 8'i

Ik 'i s [) i ο 1 IM

The ancestor is the same as in BoispLoJ L,

But there will be a (! r undsc. h i r h t mi L following

Composition used:

-Polyethylene Ch1 orosu1fonaί 30.%

-Titanium dioxide 10%

-Koh 1 ens to ff schwa r · /. 5%

-OrgtinoK i 1 aiic 5%

solution rn i 11 e 1 50%

as well as an elastomeric mixture of the following Composition:

-Slyren buladiene 2 2.5%

-P ο L y i s ο r ρ r e η 2 2.5%

-mineral kuller 35%

- P 1 a s t i f i. ζ i e r e r 14%

Accelerator 1%

Example IV

Same procedure as in Example I, but with a Cr differs with the following composition :

A (MiS 8210/83

-Chloroprene 15%

-Silicic acid 40%

-Koh 1 ens Loffschwarz 5%

- 0 r g a η ο s i I a η e 5% -solvent 3-5%

and an e1 as Iomeric mixture of the following Composition:

-Ethylon propylend ion 3Ό%

-Ant i ο χ i d a t i ο η κ milt ο .1 '3%

- ο r g a η i s c h e I '' ü I 1 e r 3 0% Accelerator 2% -Plast i. fi eder 2 5%

Using the procedures of Examples t through IV above, excellent sheets of glass were obtained, with the rubber was intimately connected with the (Il as the carrier; also found one, that the rubber -G 1 as-Ve r bi η du ag by mechanical Tensions, chemical and physical means and aging was not affected.

Therefore, seduction is particularly important in the manufacture of motor vehicles; Advantages of 1 ha (t be because they can cope with a number of problems that are closely related to the I ¹ ! in construction of elastomer seals on fixed and

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b e w e g I. i c h ο η (! 1 a κ s c h e i ben are connected with a significantly simplified construction, furthermore offers you economic advantages * and f u η k t i ο η e 1 1 e Be s se πι η g en.

Of course you can within the same principle the execution dο iai is and procedures Considerable ν on the previous η achievable Description may differ, however, without the scope this K rfindung from / .viwe i. just .

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Claims (1)

Patent claims: 1.) Process for casting bonding rubber on glass, characterized in that a chemical-molecular bond between the rubber and glass during the dimensional conformation of the rubber and during its simultaneous transformation from the plastic into the elastic phase is generated by the combination of time, heat and / or pressure. 2. The method according to claim 1, characterized in that it comprises the following stages: -Glass degreasing with a mixture of organic Solvents of the aliphatic and / or organic series or with aqueous solutions of inorganic and / or organic products Nature; " AGKS ^ 8210/83 - 2 - -Application of a base layer made from a solution of natural and / or synthetic polymers in aliphatic and / or aromatic solvents with reinforcing and / or stabilizing waves; -Application of an adhesive from an organic polymer solution in a mixture of organic Solvent; χ -Thermal aging of the glass with the base layer and the adhesive; - Placing in a mold; - Pouring onto the prepared glass an elastomeric mixture including one or several polymeric, non-staining antioxidants and antiozonants, mineral and / or organic fillers, pia tifiers and accelerators; -Removing, cleaning and finishing of the resulting article of manufacture. 3. The method of claim 1 or 2, wherein the base layer Essentially, the following composition on the basis of two: AGES 8210/83 one or more polymers of percentages from 7% to 35% selected from a group inclusive natural rubber, chloroprene, Polyisobutylene, polyethylene and chlorosulfonate; - mineral and organic fillers of 0.1% up to 50% with components from the silicic acid group Aluminum and / or magnesium silicates, calcium carbonates, titanium dioxide, carbon black and organic mixtures of silicone (organosilanes). 4. The method according to any one of claims 1 to 3, at which is the el. as torn ore mixture essentially has the following composition: -one or more polymers in percentages of 20 to 50% selected from a group of . finally chloroprene, ethylene-propylene, Ethylene propy 1 en diene, natural rubber, polyisoprene and styrene butadiene; -non-staining antiodixidants and antiozonmitts up to 5% as it is for the polymers used are specific; AGES 8210/83 -strengthening minerals and / or organic Filler from 30 to 70%; -Plasticizer from 5% to 60%. 5. The method according to any one of claims 1 to 4, characterized in that the base layer and the elastomeric blend can be used in conjunction with and in a timed sequence. 6. The method according to any one of claims 1 to 5, characterized in that the heat maturation stage lasts 3 to 30 seconds at a temperature of 60 ° C to 140 ⁰ C. 7. The method according to any one of claims 1 to 6, characterized in that a single adhesive is used which also serves as a base layer. 8. The method according to any one of claims 1 to? , characterized in that the base layer contains at least two polymers of the group specified in combination. AGES 8210/83 . Method according to one of Claims 1 to 8, characterized in that the OlasLomeric Mixture of at least two of the polymers specified Contains group * in connection. 10. A product made by the method according to any one of claims 9 to 9, characterized in that that it comprises a glass carrier (K) which is intimately connected to at least one rubber element (G), where the intimate bond comes from the application of the aforementioned method results from the penetration of the adhesive layer in between with each other, with the rubber. (G) and the glass (K) is marked. 11. Product according to claim 10, characterized in that it consists of a fixed or movable pane of glass (K) of a motor vehicle in connection with one or more el as tomeren seals. DIPL.-ING. CONRAD KoCHUfJG PATENT ADVOCATE