Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Reexamination Certificate
2007-10-02
2007-10-02
Gray, Jill (Department: 1774)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
C428S375000, C428S378000, C428S392000, C252S008810, C252S008830, C523S214000, C523S216000, C523S217000
Reexamination Certificate
active
10506674
ABSTRACT:
The present invention relates to reinforcement yarns coated with a sizing composition comprising at least one silane satisfying the formula:in-line-formulae description="In-line Formulae" end="lead"?Si(R1)(R2)(R3)(R4)in-line-formulae description="In-line Formulae" end="tail"?in which:R1, R2and R3are chosen from the following atoms or groups:—H (except in the case of R3), —Cl, —O—R5, —O—R6—O—R5, —O—(C═O)—R5, —O—R6—(C═O)—R5, R5and R6being chosen from hydrocarbon radicals whose main chain has from 1 to 4 carbon atoms;R4═—R7—NHR8R7being chosen from branched hydrocarbon radicals whose main chain has from 2 to 6 carbon atoms, R8being chosen from the following groups:—H, —R9—NH2, —R10—NH—R9—NH2, R9being chosen from hydrocarbon radicals containing 1 to 12 carbon atoms or from carbonyls, and R10being chosen from hydrocarbon radicals whose main chain has from 1 to 6 carbon atoms.The glass yarns according to the invention are particularly suitable for reinforcing organic materials, the yarns and composites obtained resisting in a corrosive medium.
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patent: 4247436 (1981-01-01), Roedder et al.
patent: 4524000 (1985-06-01), Dixon et al.
patent: 5109057 (1992-04-01), Ito et al.
patent: 5736246 (1998-04-01), Augier et al.
patent: 2 178 704 (1973-11-01), None
patent: 01 90017 (2001-11-01), None
Dallies Eric
Moireau Patrick
Gray Jill
Saint-Gobain Vetrotex France S.A.
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