Sizing composition for glass strands, process using this composition and resulting products
AssigneeVertrotex France
InventorsPatrick Moireau, Anne L'her
Life of this patent
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Abstract
The present invention relates to a sizing composition for glass strands composed of a solution with a viscosity of less than or equal to 400 cP comprising less than 5% by weight of solvent and comprising at least one thermally polymerizable base system, the said base system comprising at least 60% by weight of components with a molecular mass of less than 750 and comprising at least 60 % by weight of a mixture: of component(s) exhibiting at least one epoxy reactive functional group, and of component(s) exhibiting at least one anhydride reactive functional group. The invention also relates to a process using this composition and to the strands obtained according to this process and coated with the said composition.
Claims21
Glass strand coated with a sizing composition composed of a solution with a viscosity of less than or equal to 400 cP comprising less than 5% by weight of solvent and comprising at least one thermally polymerizable and/or crosslinkable base system, the said base system comprising at least 60% by weight of components with a molecular mass of less than 750 and comprising at least 60% by weight of a mixture:
- of component(s) exhibiting at least one epoxy reactive functional group,
- and of component(s) exhibiting at least one anhydride reactive functional group.
Sizing composition for a glass strand composed of a solution with a viscosity of less than or equal to 400 cP comprising less than 5% by weight of solvent and comprising at least one thermally polymerizable and/or crosslinkable base system, the said base system comprising at least 60% by weight of components with a molecular mass of less than 750 and comprising at least 60% by weight of a mixture:
- of component(s) exhibiting at least one epoxy reactive functional group,
- and of component(s) exhibiting at least one anhydride reactive functional group.
Process for the production of sized glass stands according to which a multiplicity of molten glass streams, flowing from a multiplicity of orifices arranged at the base of one or a number of dies, is drawn in the from of one or a number of sheets of continuous filaments and then the filaments are gathered together in one or a number of strands which are collected on a moving support, the said process comprising the deposition at the surface of the filaments, during drawing and before gathering together the filaments into strands, of a sizing composition composed of a solution with a viscosity of less than or equal of 400 cP comprising less than 5% by weight of solvent and comprising at least one thermally polymerizable and/or crosslinkable base system, the said base system comprising at least 60% by weight of components with a molecular mass of less than 750 and comprising at least 60% of weight of a mixture:
- of component(s) exhibiting at least one epoxy reactive functional group,
- and of component(s) exhibiting at least one anhydride reactive functional group.
Dependencies are inferred from the claim text.