Übersetzung für "Blasenfreiheit" in Englisch

The vulcanisates are tested for freedom from bubbles and discoloration.

Freedom from blisters was only possible up to a layer thickness of 150 ?m.

In order to ensure absence of bubbles, mixing takes place preferably under reduced pressure.

This miscibility and bladder freedom is guaranteed.

This exclusion of bubbles could, up to now, be achieved only by using relatively complicated, costly methods.

As for the service life of a quartz glass component, the absence of bubbles in near-surface areas plays an important role.

All Heraeus synthetic materials are characterized by Parts per billion class purity and Zero bubble content.

Although the liquid removed from the latter side has a lower bubble content then the liquid which is introduced into the rotor before it is subjected to degassing, it is not sufficiently free from bubbles.

There seemed to be no reason to believe that wet adhesion, in the sense of early resistance to water upon exposure to rain, or freedom from bubbles when subjected to the action of moisture from under the coating, might be enhanced by increasing the hydrophilicity of the binders of appropriate primers.

This is advantageous because the absence of bubbles permits handling the pick-up also in a vacuum, or at decreased ambient pressure (air freight, etc.) without danger of damage to the thin covering.

Then component B (isocyanate component=derivate of TCDI containing isocyanatomethyl groups) was added to component mixture A, homogenized and degassed until free of bubbles.

In the following examples, the liquid detergents according to the invention were prepared by stirring the individual constituents together and allowing the mixture to stand until it is free from bubbles.

This process is particularly useful for the production of casings for air tires, where it is important that substantially no bubbles are present in the casing.

Subsequently, the hardener or the prepolymer-(component B) is added, mixed and again evacuated until it is free of bubbles.

Then the component B--the hardener and the prepolymer--were added, mixed and again evacuated until free of bubbles.

The blocked IPDI prepolymer is homogenized with the equivalent quantity of polyamine and optionally with 0.05-0.1 wt. % of a defoamer and subsequently, if necessary, extensively degassed until free of bubbles.

In order to achieve freedom from bubbles it is also possible to admix siccatives, such as calcium oxide or molecular sieve zeolites, for example, to the formulation, in particular in the range between 0 and 10% by weight.

SUMMARY OF THE INVENTION The invention is based on the object of providing a process for producing borosilicate glasses of high hydrolytic stability in which the glass melt is effectively refined, i.e. which results in glass with a high quality in terms of absence of bubbles, and which allows inexpensive, nontoxic refining of the glass melts, in particular glasses which melt at high temperatures.

Thorough mixing and degassing of the molten batch is required in order to achieve the maximum freedom from foreign gases and bubbles.

With respect to optical freedom from bubbles and the purity of the plates to be produced, it is advantageous for the quartz glass grains used to have the same chemical composition as the quartz glass soot.

Following the completion of the fiberglass wrapping 3, an evacuation process may be applied in order to ensure absolute freedom from bubbles.

Heat treatment at 130° C. for 30 minutes resulted in a highly elastic film which had excellent bond strength and was free from blisters up to a dry layer thickness of 450 ?m.

An alkali-free aluminoborosilicate glass of high quality with respect to freedom from bubbles, which has the following composition, in % by weight, based on oxide: