Claims
- 1. A glass fiber having at least a portion of its surface in contact with the dried residue of an aqueous composition comprising:
- (a) an emulsion of a thermoplastic aliphatic polyurethane produced by the chain extension of an NCO-terminated prepolymer prepared by the reaction of an aliphatic or cycloaliphatic diisocyanate with a polyalkylene ether polyol, and
- (b) a silane coupling agent.
- 2. The glass fiber of claim 1 in which said composition also comprises a lubricant.
- 3. The glass fiber of claim 2 in which said lubricant is a cationic condensation product of morpholine and a sulfonic acid.
- 4. The glass fiber of claim 2 in which said lubricant is employed in said aqueous composition in an amount up to about 5 parts per 100 parts by weight.
- 5. The glass fiber of claim 1 in which said silane coupling agent is gamma-aminopropyltrimethoxysilane.
- 6. The glass fiber of claim 1 in which said silane coupling agent is employed in said aqueous composition in an amount within a range of from about 0.2 to about 4 parts per 100 parts by weight.
- 7. The glass fiber of claim 1 in which said polyurethane emulsion is employed in said aqueous composition in an amount within a range of from about 3 to about 20 parts per 100 parts by weight.
- 8. A glass size composition comprising:
- (a) an emulsion of a thermoplastic aliphatic polyurethane produced by the chain extension of an NCO-terminated prepolymer prepared by the reaction of an aliphatic or cycloaliphatic diisocyante with a polyalkylene ether polyol, and
- (b) a silane coupling agent.
- 9. The glass size composition of claim 8 also comprising a lubricant.
- 10. A body of reinforced polyamide resin wherein said reinforcement comprises at least one glass fiber according to claim 1.
- 11. A body of reinforced polyamide resin wherein said reinforcement comprises at least one glass fiber according to claim 2.
- 12. A body of reinforced polyamide resin wherein said reinforcement comprises at least one glass fiber according to claim 3.
- 13. A body of reinforced polyamide resin wherein said reinforcement comprises at least one glass fiber according to claim 4.
- 14. A body of reinforced polyamide resin wherein said reinforcement comprises at least one glass fiber according to claim 5.
- 15. A body of reinforced polyamide resin wherein said reinforcement comprises at least one glass fiber according to claim 6.
- 16. A body of reinforced polyamide resin wherein said reinforcement comprises at least one glass fiber according to claim 7.
Parent Case Info
This application is a continuation-in-part of our application Ser. No. 844,253 filed Oct. 21, 1977, and now abandoned, which in turn was a continuation of our application Ser. No. 741,181 filed Nov. 12, 1976 and also now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3401133 |
Grace et al. |
Sep 1968 |
|
3803069 |
McWilliams et al. |
Apr 1974 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
2300368 |
Jul 1973 |
DEX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
741181 |
Nov 1976 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
844253 |
Oct 1977 |
|