Coated glass fibers, composites and methods related thereto

• US 6,238,791 B1
• Filed: 04/14/1998
• Issued: 05/29/2001
• Est. Priority Date: 12/18/1997
• Status: Expired due to Fees

• Current Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Inventors: Ranade, Shrirang, Schell, Philip L.
• Primary Examiner(s): Krynski, William
• Assistant Examiner(s): GRAY, JILL M
• Application Number:
  US09/059,809
• Time in Patent Office: 1,141 Days
• Field of Search: 428/375, 428/392, 428/394
• US Class Current: 428/392
• CPC Class Codes: C03C 25/1065 Multiple coatings
• CPC Class Codes: C03C 25/285 Acrylic resins
• CPC Class Codes: C08J 2377/00 Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
• CPC Class Codes: C08J 5/06 using pretreated fibrous materials
• CPC Class Codes: G02B 6/4432 with fibre reinforcements
• CPC Class Codes: G02B 6/4486 Protective covering
• CPC Class Codes: Y10T 428/2933 Coated or with bond, impregnation or core
• CPC Class Codes: Y10T 428/2964 Artificial fiber or filament
• CPC Class Codes: Y10T 428/2967 Synthetic resin or polymer

Abstract

The present invention provides fiber strands and products coated with a blend of a hydrophobic fluoroalkylacrylate polymer and an amine-reactive material or a polymerization reaction product of a hydrophobic fluoroalkylacrylate and a amine reactive monomeric material which are useful as reinforcements for nylon composites to inhibit hydrolysis.

Claims

1. A strand comprising a plurality of glass fibers, at least one of the plurality of fibers having a layer of a coating composition on at least a portion of a surface thereof, the coating composition comprising a blend of a hydrophobic fluoroalkylacrylate polymer and an amine-reactive material which is an unsaturated carboxylic acid having 3 to 10 carbon atoms.

2. The fiber strand according to claim 1, wherein the fluoroalkylacrylate polymer is a perfluoroalkylacrylate polymer.

3. The fiber strand according to claim 2, wherein the perfluoroalkylacrylate polymer is formed from perfluoroalkyl acrylate monomer components represented by the following formula (I):

4. The fiber strand according to claim 1, wherein the fluoroalkylacrylate polymer is an addition polymerization reaction product of a fluoroalkyl acrylate monomer component, vinylidene chloride and an alkyl acrylate monomer component.

5. The fiber strand according to claim 4, wherein the fluoroalkyl acrylate monomer component comprises a perfluoroalkylethylacrylate monomer.

6. The fiber strand according to claim 4, wherein the fluoroalkyl acrylate monomer component comprises a mixture of perfluoroalkylethylacrylate monomers.

7. The fiber strand according to claim 4, wherein the alkyl acrylate monomer component comprises a mixture of alkyl acrylate monomers.

8. The fiber strand according to claim 1, wherein the fluoroalkylacrylate polymer comprises about 25 to about 75 weight percent of the coating composition on a total solids basis.

9. The fiber strand according to claim 8, wherein the fluoroalkylacrylate polymer comprises about 30 to about 60 weight percent of the coating composition on a total solids basis.

10. The fiber strand according to claim 1, wherein the amine-reactive material is an unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, itaconic acid, maleic acid, fumaric acid, cinnamic acid, crotonic acid, aconitic acid, citraconic acid, sorbic acid, tetrahydrophthalic acid and mixtures thereof.

11. The fiber strand according to claim 1, wherein the amine-reactive material comprises about 25 to about 75 weight percent of the coating composition on a total solids basis.

12. The fiber strand according to claim 11, wherein the amine-reactive material comprises about 40 to about 70 weight percent of the coating composition on a total solids basis.

13. The fiber strand according to claim 1, wherein the coating composition further comprises a coupling agent.

14. A strand comprising a plurality of fibers, at least one of the plurality of fibers having a layer of a coating composition on at least a portion of a surface thereof, the coating composition comprising a blend of a hydrophobic perfluoroalkylacrylate polymer and an amine-reactive material which is an unsaturated carboxylic acid having 3 to 10 carbon atoms.

15. The strand according to claim 14, wherein the fibers are formed from fiberizable materials selected from the group consisting of inorganic materials, organic materials and combinations thereof.

16. The strand according to claim 15, wherein the fibers are formed from an inorganic material which is glass.

17. The fiber strand according to claim 14, wherein the perfluoroalkylacrylate polymer is formed from perfluoroalkyl acrylate monomer components represented by the following formula (I):

18. The fiber strand according to claim 14, wherein the fluoroalkylacrylate polymer comprises about 25 to about 75 weight percent of the coating composition on a total solids basis.

19. The fiber strand according to claim 18, wherein the fluoroalkylacrylate polymer comprises about 30 to about 60 weight percent of the coating composition on a total solids basis.

20. The fiber strand according to claim 14, wherein the amine-reactive material is an unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, itaconic acid, maleic acid, fumaric acid, cinnamic acid, crotonic acid, aconitic acid, citraconic acid, sorbic acid, tetrahydrophthalic acid and mixtures thereof.

21. The fiber strand according to claim 14, wherein the amine-reactive material comprises about 25 to about 75 weight percent of the coating composition on a total solids basis.

22. The fiber strand according to claim 14, wherein the amine-reactive material comprises about 40 to about 70 weight percent of the coating composition on a total solids basis.

23. The fiber strand according to claim 14, wherein the coating composition further comprises a coupling agent.

24. A strand comprising a plurality of fibers, at least one of the plurality of fibers having a layer of a coating composition on at least a portion of a surface thereof, the coating composition comprising a blend of a hydrophobic perfluoroalkylacrylate polymer and an amine-reactive material selected from the group consisting of (1) unsaturated carboxylic acids having 3 to 10 carbon atoms (2) epoxides;

(3) cyanoacrylates;

(4) acrylamides which are free of hydroxyl groups;

(5) acrylonitriles;

(6) aldehydes;

(7) diketones and (8) mixtures of materials (1)-(7).

25. A strand comprising a plurality of fibers, at least one of the plurality of fibers having a layer of a coating composition on at least a portion of a surface thereof, the coating composition comprising a blend of a hydrophobic fluoroalkylacrylate polymer and an amine-reactive material which is an unsaturated carboxylic acids having 3 to 10 carbon atoms, wherein the fluoroalkylacrylate polymer is an addition polymerization reaction product of a fluoroalkyl acrylate monomer component, vinylidene chloride and an alkyl acrylate monomer component.

26. The fiber strand according to claim 25, wherein the fluoroalkyl acrylate monomer component comprises a perfluoroalkylethylacrylate monomer.

27. The fiber strand according to claim 25, wherein the fluoroalkyl acrylate monomer component comprises a mixture of perfluoroalkylethylacrylate monomers.

28. The fiber strand according to claim 25, wherein the alkyl acrylate monomer component comprises a mixture of alkyl acrylate monomers.

29. A strand comprising a plurality of fibers, at least one of the plurality of fibers having a layer of a coating composition on at least a portion of a surface thereof, the coating composition comprising a blend of a hydrophobic fluoroalkylacrylate polymer and an amine-reactive material selected from the group consisting of (1) unsaturated carboxylic acids having 3 to 10 carbon atoms (2) epoxides;

(3) cyanoacrylates;

(4) acrylamides which are free of hydroxyl groups;

(5) acrylonitriles;

(6) aldehydes;

(7) diketones and (8) mixtures of materials (1)-(7), wherein the fluoroalkylacrylate polymer is an addition polymerization reaction product of a fluoroalkyl acrylate monomer component, vinylidene chloride and an alkyl acrylate monomer component.