Use of UV Absorbers and Naphthalate Containing Polymers for Enhancing UV Stability of Fibers and Fabrics

• US 20080311372A1
• Filed: 06/18/2008
• Published: 12/18/2008
• Est. Priority Date: 06/18/2007
• Status: Abandoned Application

• Current Assignee: Americhem, Inc.
• Original Assignee: Americhem, Inc.
• Inventors: Kulkarni, Vaman G.
• Application Number:
  US12/141,888
• Publication Number:
  US 20080311372A1
• Time in Patent Office: Days
• US Class Current: 428/221
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C08K 5/3412 having one nitrogen atom in the ring
• CPC Class Codes: C08K 5/3475 condensed with carbocyclic rings
• CPC Class Codes: C08K 5/3492 Triazines
• CPC Class Codes: C08L 2205/02 containing two or more polymers of the same C08L -group
• CPC Class Codes: C08L 2666/18 Polyesters or polycarbonates according to C08L67/00 - C08L69/00; Derivatives thereof
• CPC Class Codes: C08L 67/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds C08L67/06 takes precedence
• CPC Class Codes: D01F 1/106 Radiation shielding agents, e.g. absorbing, reflecting agents
• CPC Class Codes: D01F 6/92 of polyesters
• CPC Class Codes: Y10T 428/249921 Web or sheet containing structurally defined element or component

Abstract

The present invention relates to the use of a blend of UV absorbers and a naphthalate containing polymer for enhancing the stability of fibers and fabrics. According to the present invention, preferred UV absorbers include but are not limited to benzophenones, benzotriazoles, triazines and benzoxazinone chemistries and preferred naphthalate containing polymers include but are not limited to polyethylene naphthalate (PEN), polyethylene naphthalate terephthalate (PENT), polybutylene naphthalate (PBN), polytrimethylene naphthalate (PTN) and copolymers and blends there of.

Claims

1. A composition comprising a UV absorber, a first polymer and a second polymer, wherein the first polymer comprises at least one naphthalate containing polymer.

2. The composition of claim 1, wherein the UV absorber is selected from the group consisting of aliphatic ketones, aromatic ketones and cyclic aminoesters.

3. The composition of claim 1, wherein the UV absorber is selected from the group consisting of benzophenones, benzotriazoles, triazines, benzoxazinones and mixtures thereof.

4. The composition of claim 1, wherein the naphthalate containing polymer comprises a naphthalate containing polyester.

5. The composition of claim 4, wherein the naphthalate containing polyester is selected from group consisting of polyethylene naphthalate, polyethylene naphthalate terephthalate, polybutylene naphthalate, polytrimethylene naphthalate and copolymers and mixtures thereof.

6. The composition of claim 1, wherein the first polymer comprises a mixture of a naphthalate containing polymer and a thermoplastic polymer.

7. The composition of claim 6, wherein the mixture comprises about 10 to 90 parts by weight of the naphthalate containing polymer and about 90 to 10 parts by weight of the thermoplastic polymer.

8. The composition of claim 6, wherein the thermoplastic polymer comprises a thermoplastic polyester.

9. The composition of claim 8, wherein the thermoplastic polyester is selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate and copolymers and mixtures thereof.

10. The composition of claim 1, wherein the composition comprises about 0.1 to 50 parts by weight of the UV absorber, about 0.5 to 98 parts of the first polymer, and about 99.4 to 0.1 parts by weight of the second polymer.

11. The composition of claim 1, wherein the second polymer is selected from the group consisting of a polyethylene terephthalate and copolymers thereof.

12. The composition of claim 1, further comprising a second UV absorber selected from the group consisting of nano TiO₂ and nano ZnO.

13. An article comprising the composition of claim 1.

14. The article of claim 13, wherein the article comprises a fiber, a fabric, a molded sheet or an extruded sheet.

15. A UV resistant article comprising an effective amount of UV absorber and an effective amount of a first polymer, wherein the first polymer comprises at least one naphthalate containing polymer.

16. The article of claim 15, wherein the UV absorber is selected from the group consisting of benzophenones, benzotriazoles, triazines, benzoxazinones and mixtures thereof.

17. The article of claim 15, wherein the naphthalate containing polymer comprises a naphthalate containing polyester.

18. The article of claim 17, wherein the naphthalate containing polyester is selected from group consisting of polyethylene naphthalate, polyethylene naphthalate terephthalate, polybutylene naphthalate, polytrimethylene naphthalate and copolymers and mixtures thereof.

19. The article of claim 15, wherein the first polymer comprises a mixture of a naphthalate containing polymer and a thermoplastic polymer.

20. The article of claim 19, wherein the thermoplastic polymer comprises a thermoplastic polyester.

21. The article of claim 20, wherein the thermoplastic polyester is selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate and copolymers and mixtures thereof.

22. The article of claim 15, wherein the composition further comprises a second polymer.

23. The article of claim 22, wherein the second polymer is selected from the group consisting of a polyethylene terephthalate and copolymers thereof.

24. The article of claim 15, wherein the article comprises a fiber, a fabric, a molded sheet or an extruded sheet.

25. A fabric comprising a first fiber and a second fiber, wherein the first fiber comprises the article of claim 15.

26. The fabric of claim 25, wherein the second fiber comprises a natural fiber or a synthetic fiber.

27. The fabric of claim 26, wherein the natural fiber is selected from the group consisting of cotton, wool, linen and silk.

28. The fabric of claim 26, wherein the synthetic fiber is selected from the group consisting of polyester, nylon, polyolefin and acrylic.

29. A composition comprising a compound selected from the group consisting of benzophenones, benzotriazoles, triazines, benzoxazinones and mixtures thereof, a first polymer and a second polymer, wherein the first polymer comprises at least one naphthalate containing polyester selected from group consisting of polyethylene naphthalate, polyethylene naphthalate terephthalate, polybutylene naphthalate, polytrimethylene naphthalate and copolymers and mixtures thereof and the second polymer is selected from the group consisting of a polyethylene terephthalate and copolymers and mixtures thereof.

30. The composition of claim 29, wherein the first polymer comprises a mixture of a naphthalate containing polymer and a thermoplastic polyester selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate and copolymers and mixtures thereof.

31. An article comprising the composition of claim 29.

32. The article of claim 31, wherein the article comprises a fiber, a fabric, a molded sheet or an extruded sheet.