IP Library › Granted Patent US 12,209,164
Granted Patent B2
US 12,209,164 · App. 16/996,009 · Granted Jan 28, 2025

Polymer composition and film for use in 5G applications

Inventors: Xiaowei Zhang (Union, KY); Young Shin Kim (Cincinnati, OH)
Assignee: Ticona LLC
C08G63/065B32B15/08B32B15/09B32B15/20C08J5/18C08L67/04H01Q1/243B32B2457/08C08J2367/04C08J2427/18
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Quick Facts
Patent No.
US 12,209,164
App. No.
16/996,009
Granted
Jan 28, 2025
Kind
B2
Abstract

A polymer composition comprising a liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of about 50 mol. % or more is provided. The polymer composition exhibits a dielectric constant of about 4 or less and a dissipation factor of about 0.05 or less at a frequency of 10 GHz.

Claims (22)

1. A polymer composition comprising a liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of 70 mol. % or more and comprises repeating units derived from 6-hydroxy-2-naphthoic acid, 4,4-biphenol, and 4-hydroxybenzoic acid, wherein a molar ratio of 6-hydroxy-2-naphthoic acid to 4-hydroxybenzoic acid is from 24 to about 40, wherein the polymer composition exhibits a dielectric constant of 3.5 or less and a dissipation factor of about 0.05 or less at a frequency of 10 GHz, wherein the polymer composition exhibits a tensile elongation of about 2% or more as determined at a temperature of about 23° C. in accordance with ISO Test No. 527:2012, and further wherein the liquid crystalline polymer comprises repeating units derived from 6-hydroxy-2-naphthoic acid in an amount of 76 mol % or more or contains repeating units derived from naphthenic dicarboxylic acids.

2. The polymer composition of claim 1 , wherein the liquid crystalline polymer comprises repeating units derived from naphthenic dicarboxylic acids in an amount of 25 mol. % or more.

3. The polymer composition of claim 1 , wherein the liquid crystalline polymer contains repeating units derived from 6-hydroxy-2-naphthoic acid in an amount of 73 mol. % or more.

4. The polymer composition of claim 1 , wherein the liquid crystalline polymer contains repeating units derived from 6-hydroxy-2-naphthoic acid in an amount of 76 mol. % or more.

5. The polymer composition of claim 1 , wherein the liquid crystalline polymer comprises repeating units derived from 6-hydroxy-2-naphthoic acid in an amount of 78 mol % or more.

6. The polymer composition of claim 1 , wherein the polymer composition exhibits a tensile elongation of from about 4% to about 15% as determined at a temperature of about 23° C. in accordance with ISO Test No. 527:2012.

7. The polymer composition of claim 1 , wherein the polymer composition exhibits a dissipation factor of about 0.002 or less at a frequency of 10 GHz.

8. The polymer composition of claim 1 , wherein the polymer composition has a melting temperature of from about 290° C. to about 350° C.

9. The polymer composition of claim 1 , wherein the liquid crystalline polymer contains repeating units derived from naphthenic dicarboxylic acids.

10. The polymer composition of claim 1 , wherein liquid crystalline polymers constitute 100 wt. % of the composition.

11. The polymer composition of claim 1 , wherein additives constitute from about 1 wt. % to about 60 wt. % of the polymer composition and liquid crystalline polymers constitute from about 40 wt. % to about 99 wt. % of the polymer composition.

12. A film comprising the polymer composition of claim 1 .

13. The film of claim 12 , wherein the polymer composition exhibits a tensile elongation of about 3% or more as determined at a temperature of about 23° C. in accordance with ISO Test No. 527:2012.

14. The film of claim 13 , wherein the polymer composition exhibits a tensile elongation of from about 4% to about 15% as determined at a temperature of about 23° C. in accordance with ISO Test No. 527:2012.

15. The film of claim 12 , wherein the polymer composition exhibits a dielectric constant of about 3.4 or less at a frequency of 10 GHz.

16. The film of claim 12 , wherein the polymer composition has a melting temperature of from about 290° C. to about 350° C.

17. The film of claim 12 , wherein the film has a thickness of from about 3 to about 100 micrometers.

18. A laminate for use in a circuit board, the laminate comprising a conductive layer and the film of claim 12 .

19. The laminate of claim 18 , wherein the film is positioned between two conductive layers.

20. The laminate of claim 18 , wherein the conductive layer comprises copper or an alloy thereof.

21. A circuit board comprising the laminate of claim 18 .

22. A 5G antenna system comprising the circuit board of claim 21 and at least one antenna element configured to transmit and receive 5G radio frequency signals, wherein the antenna element is coupled to the circuit board.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 14, 2020
From: ZHANG, XIAOWEI; KIM, YOUNG SHIN
To: TICONA LLC
Reel/Frame 053762/0076 →
Continuity (7)
Provisional Application 63024596 · May 14, 2020
Provisional Application 63008989 · Apr 13, 2020
Provisional Application 62994321 · Mar 25, 2020
Provisional Application 62986072 · Mar 6, 2020
Provisional Application 62904089 · Sep 23, 2019
Provisional Application 62898188 · Sep 10, 2019
Related Publication 20210070927A1 · Mar 11, 2021
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