Profile-extruded poly(vinyl chloride) articles and method of making same

• US 7,198,840 B2
• Filed: 02/04/2004
• Issued: 04/03/2007
• Est. Priority Date: 02/25/2003
• Status: Active Grant

• Current Assignee: Geon Performance Solutions LLC
• Original Assignee: Polyone Corporation (Avient Corp.)
• Inventors: Lee, Sang H., Hooks, Robert B.
• Primary Examiner(s): EDWARDS, NEWTON O
• Application Number:
  US10/772,213
• Publication Number:
  US 20040166301A1
• Time in Patent Office: 1,154 Days
• Field of Search: 428/372, 428/299.4, 428/370
• US Class Current: 428/297.4
• CPC Class Codes: C08J 2327/06 Homopolymers or copolymers of vinyl chloride
• CPC Class Codes: C08J 5/04 Reinforcing macromolecular compounds with loose or coherent fibrous material
• CPC Class Codes: Y10T 428/24994 Fiber embedded in or on the surface of a polymeric matrix
• CPC Class Codes: Y10T 428/249946 Glass fiber

Abstract

A profile-extruded article is disclosed, made of a fiber-reinforced polymer of vinyl-chloride monomer, wherein the article has a ratio of actual specific gravity to theoretical specific gravity of nearly unity. A method of making the article is also disclosed.

Claims

1. A profile-extruded article comprising a polymer and fiber present in and reinforcing the polymer, wherein the polymer comprises poly(vinyl chloride), wherein the article has a ratio of actual specific gravity to theoretical specific gravity of nearly unity, and wherein the fibers are present in the polymer in an amount of from about 5 to about 40 percent by weight.

2. The article of claim 1, the ratio of actual specific gravity to theoretical specific gravity ranges from about 0.90 to about 0.99.

3. The article of claim 1, the ratio of actual specific gravity to theoretical specific gravity ranges from about 0.95 to about 0.99.

4. The article of claim 1, the ratio of actual specific gravity to theoretical specific gravity ranges from about 0.97 to about 0.99.

5. The article of claim 1, wherein the poly(vinyl chloride) has a weight average molecular weight ranging from about 30×

10³ to about 168×

10³.

6. The article of claim 1, wherein the fiber is selected from the group consisting of glass, nylon, graphite, wood, and combinations thereof.

7. The article of claim 6, wherein the article has glass fibers.

8. The article of claim 1, wherein the fibers have a length ranging from about 500 μ

m to about 1 mm.

16. The article of claim 1, wherein the fibers are present in the polymer in an amount of from about 5 percent to about 40 percent by weight.

9. A profile-extruded article comprising a polymer and fiber present in and reinforcing the polymer, wherein the polymer comprises poly(vinyl chloride), wherein the article has a ratio of actual specific gravity to theoretical specific gravity of nearly unity,

wherein the poly(vinyl chloride) has a weight average molecular weight ranging from about 30×

10³ to about 168×

10³.

10. The article of claim 9, the ratio of actual specific gravity to theoretical specific gravity ranges from about 0.90 to about 0.99.

11. The article of claim 9, the ratio of actual specific gravity to theoretical specific gravity ranges from about 0.95 to about 0.99.

12. The article of claim 9, the ratio of actual specific gravity to theoretical specific gravity ranges from about 0.97 to about 0.99.

13. The article of claim 9, wherein the fiber is selected from the group consisting of glass, nylon, graphite, wood, and combinations thereof.

14. The article of claim 13, wherein the article has glass fibers.

15. The article of claim 9, wherein the fibers have a length ranging from about 500 μ

m to about 1 mm.