Saint-gobain Technical Fabrics Europe

Saint-gobain Glass France

Ocv Intellectual Capital, LLC

Owens Corning Intellectual Capital, LLC

Societe De Recherches Techniques Dentaires-r.t.d.

Anne Berthereau

Emmanuel Lecomte

Jerome Lalande

Pierre Jeanvoine

Tanguy Massart

Sophie Creux

Peter Bernard McGinnis

Douglas Alan Hofmann

Dominique Sachot

John W Wingert

Eric Dallies

Emmanuelle Picard

Jerome Blaizot

Jérôme Lalande

Jérôme Blaizot

Dominique Gerard

The present invention relates to a chemically resistant glass composition for the production of reinforcing strands which comprises the following constituents within the limits defined below, expressed in mol %: SiO67-72%; ZrO5-9.5%, preferably &#x2265;7.5%; RO (R&#x2550;Na, K and Li) 11-17%; LiO 0-5.5%; KO 0-5.5%; NaO&#x3c;10%; and CaO 3-9%, the composition furthermore containing less 1% of impurities (AlO, FeO, CrO, TiO, MgO, SrO, BaO and PO) and being free of F. It also relates to the glass strands obtained from this composition and to the composites based on an organic or inorganic material containing such strands.

Glass composition having improved hydraulic resistance for the manufacture of glass reinforcing strands

The present invention relates to a glass composition which is resistant to alkalis and to acids, in particular for the preparation of reinforcing glass strands, which comprises the following constituents within the limits defined below, as percentages by weight: 

Alkali-and acid-resistant glass composition for the manufacture of glass strands

The present invention relates to a chemically resistant glass composition for the production of reinforcing strands which comprises the following constituents within the limits defined below, expressed in mol %: SiO67-72%; ZrO5-9.5%, preferably &#x2267;7.5%; RO (R=Na, K and Li) 11-17%; LiO 0-5.5%; KO 0-5.5%; NaO&#x3c;10%; and CaO 3-9%, the composition furthermore containing less 1% of impurities (AlO, FeO, CrO, TiO, MgO, SrO, BaO and PO) and being free of F. It also relates to the glass strands obtained from this composition and to the composites based on an organic or inorganic material containing such strands.

Chemically resistant glass composition for the manufacture of glass reinforcing strands

An R-glass composition including SiOin an amount from 59.0 to 64.5% by weight, AlOin an amount from 14.5 to 20.5% by weight, CaO in an amount from 11.0 to 16.0% by weight, MgO in an amount from 5.5 to 11.5% by weight, Na2O in N an amount from 0.0 to 4.0% by weight, TiOin an amount from 0.0 to 2.0% by weight, FeOin an amount from 0.0 to 1.0% by weight, BOin an amount from 0.0 to about 3.0% by weight, KO, FeO, ZrO, and Fluorine, each of which is present in an amount from 0.0 to about 1.0% by weight, and SrO and ZnO, each of which is present in an amount from 0.0 to about 2.0% by weight. In exemplary embodiments, the glass composition does not contain lithium or boron.

Modulus, lithium free glass

The invention relates to reinforcing glass strands, the composition of which comprises the following constituents within the limits defined below expressed as percentages by weight:  These strands are composed of a low-cost glass offering an excellent compromise between the mechanical properties represented by the tensile strength and the fiberizing conditions. The invention also relates to the composites based on organic and/or inorganic material(s) and the aforementioned glass strands.

Glass strands with low alumina content capable of reinforcing organic and/or inorganic materials

The invention relates to a glass yarn capable of being obtained by a method consisting of mechanically drawing molten glass threads flowing from orifices disposed at the base of a die, of which the chemical composition is substantially free from boron oxide and comprises the following constituents within the limits defined hereinafter expressed in percentages by weight:  It also relates to composites containing such yarns.

Glass yarns capable of reinforcing organic and/or inorganic materials

A glass thread adapted for reinforcing polymeric materials includes a plurality of filaments having a chemical composition that includes the following constituents within the limits defined below in weight percent: Prosthetic members including such threads are also described.

Radio-opaque glass fibres and dental prosthetic member containing said fibres

The invention relates to a glass strand, the chemical composition of which is substantially free of boron oxide and comprises the following constituents, in the limits defined below expressed as percentages by weight: It also relates to composites comprising such strands.

The invention relates to glass reinforcement strands, the composition of which comprises the following constituents in the limits defined below, expressed as percentages by weight: 59 to 63% SiO; 10 to 16% AlO; 16 to 23% CaO; 1 to 3.2% MgO; 0 to 2% NaO+KO+LiO; 0 to 1% TiO; 0.1 to 1.8% BO; 0 to 0.5% LiO; 0 to 0.4% ZnO; 0 to 1% MnO; and 0 to 0.5% F. These strands have improved properties in terms of mechanical strength, acid resistance and high-temperature resistance for a low-cost composition. The invention also relates to a process for producing the said strands and to the composition allowing them to be produced.

Glass yarn for reinforcing organic and/or inorganic materials

The invention relates to glass reinforcement strands, the composition of which comprises the following constituents in the limits defined below, expressed as percentages by weight: 58 to 63% SiO; 10 to 16% AlO; 16 to 23% CaO; 0.5 to 3.5% MgO; 0 to 2% NaO+KO+LiO; 1 to 1.5% TiO; 0 to 1.5% BO; 0 to 0.4% LiO; 0 to 0.4% ZnO; 0 to 1% MnO; and 0 to 0.5% F. These strands have improved properties in terms of mechanical strength, acid resistance and high-temperature resistance for a low-cost composition. The invention also relates to a process for producing the said strands and to the composition allowing them to be produced.

A process for melting and refining vitrifiable materials, such that all or part of the thermal energy necessary for melting the said vitrifiable materials is supplied by the combustion of fossil fuel(s) with at least one oxidizer gas, the fuel(s)/gas or the gaseous products resulting from the combustion being injected below the level of the mass of vitrifiable materials (). The refining of the vitrifiable materials after melting comprises at least one step of subjecting them to subatmospheric pressure while centrifuging.

Method and device for melting and refining materials capable of being vitrified

The invention concerns a grey glass composition of the soda-lime type having a global light transmission under an illuminant A (T ) more than 15% for a glass thickness equal to 4.85 mm, said composition comprising colouring agents as follows in the following weight percentage limits: Fe O : 0.25-0.65%, preferably 0.3-0.6% and more preferably still 0.3-0.4%; CoO: 150-250 ppm and preferably>185 ppm; NiO: 650-1000 ppm; Se<5 ppm.

Grey glass compositions of the silica-soda-lime type

The subject of the invention is a process for melting and refining vitrifiable materials, such that all or part of the thermal energy necessary for melting the said vitrifiable materials is supplied by the combustion of fossil fuel(s) with at least one oxidizer gas, the said fuel(s)/gas or the gaseous products resulting from the combustion being injected below the level of the mass of vitrifiable materials ( ). The refining of the vitrifiable materials after melting comprises at least one step of subjecting them to subatmospheric pressure. The invention also relates to the device for implementing the process and to its applications.

Process for melting and refining vitrifiable materials

A process for melting and refining vitrifiable materials. In this method all or part of the thermal energy necessary for melting the vitrifiable materials is supplied by the combustion of fossil fuel with at least one oxidizer gas, the fuel, gas or the gaseous products resulting from their combustion are injected below the level of the mass of the vitrifiable materials. The refining of the vitrifiable materials after melting includes at least the step of subjecting them to subatmospheric pressure.

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Challes les Eaux, France

Anne Berthereau