US 7,612,002 B2
Glass fibre for the reinforcement of organic and/or inorganic materials, method for production of said glass fibres and corresponding composition
Sophie Creux, Den Haag (Netherlands); Emmanuel Lecomte, Bobigny (France); and Nicolas Renaud, Barberaz (France)
Assigned to Saint-Gobain Technical Fabrics Europe, Chambery (France)
Appl. No. 10/548,581
PCT Filed Mar. 10, 2004, PCT No. PCT/FR2004/000568
§ 371(c)(1), (2), (4) Date Jun. 27, 2006,
PCT Pub. No. WO2004/083142, PCT Pub. Date Sep. 30, 2004.
Claims priority of application No. 03 03206 (FR), filed on Mar. 13, 2003.
Prior Publication US 2006/0287185 A1, Dec. 21, 2006
Int. Cl. C03C 13/06 (2006.01); C03C 3/093 (2006.01)
U.S. Cl. 501—36  [501/35; 501/67] 10 Claims
 
1. A glass reinforcement strand, comprising glass having the following composition in percentages by weight:
   
  SiO2 50 to 60%;
  Al2O3 10 to 19%;
  B2O3 16 to 25%;
  ZrO2 0.5 to 1.5%;
  Na2O ≤1.5%;
  K2O ≤1.5%;
  R2O ≤2%
  CaO ≤10%;
  MgO ≤10%;
  F 0 to 2%;
  TiO2 0 to 3%;
  RO 4 to 15%; and
  Various ≤3%,
  where R2O = Na2O + K2O + Li2O and RO = CaO + MgO.