Jun Z Zhao

US Patent:

6576340, Jun 10, 2003

Filed:

Nov 8, 2000

Appl. No.:

09/708209

Inventors:

Yanhui Sun - Wilmington DE
Jun Zhao - Newark DE

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

D02G 300

US Classification:

428373, 428364, 525425, 525435

Abstract:

An acid-dyeable polyester composition comprising (a) polyester and (b) secondary amine or secondary amine salt in an amount effective to promote acid-dyeability. The acid-dyeable polyester composition may be prepared by melt blending: the polyester; and polymeric additive prepared from (i) triamine containing secondary amine or secondary amine salt unit(s) and (ii) one or more other monomer and/or polymer units. One polymeric additive comprises polyamide selected from the group consisting of poly-imino-bisalkylene-terephthalamide, -isophthalamide and -1,6-naphthalamide, and salts thereof. Also, the polymeric additive, the blends, shaped articles (e. g. , fibers and films), processes of dyeing, and processes for preparing an acid dyeable polyester composition.

US Patent:

6858702, Feb 22, 2005

Filed:

Mar 7, 2002

Appl. No.:

10/093654

Inventors:

Yanhui Sun - Wilmington DE, US
Jun Zhao - Newark DE, US

Assignee:

Invista North America S.á.r.l. - Wilmington DE

International Classification:

C08L077/00

US Classification:

528340, 525425

Abstract:

An acid-dyeable polyester composition comprising (a) polyester and (b) secondary amine or secondary amine salt in an amount effective to promote acid-dyeability. The acid-dyeable polyester composition may be prepared by melt blending: the polyester; and polymeric additive prepared from (i) triamine containing secondary amine or secondary amine salt unit(s) and (ii) one or more other monomer and/or polymer units. One polymeric additive comprises polyamide selected from the group consisting of poly-imino-bisalkylene-terephthalamide, -isophthalamide and -1,6-naphthalamide, and salts thereof. Also, the polymeric additive, the blends, shaped articles (e. g. , fibers and films), processes of dyeing, and processes for preparing an acid dyeable polyester composition.

US Patent:

7034088, Apr 25, 2006

Filed:

Aug 24, 2004

Appl. No.:

10/925102

Inventors:

Yanhui Sun - Wilmington DE, US
Jun Zhao - Wilmington DE, US

Assignee:

Invista North Americal S.AR.L. - Wilmington DE

International Classification:

C08L 77/00
C08L 67/02

US Classification:

525425, 525420, 525435

Abstract:

An acid-dyeable polyester composition comprising (a) polyester and (b) secondary amine or secondary amine salt in an amount effective to promote acid-dyeability. The acid-dyeable polyester composition may be prepared by melt blending: the polyester; and polymeric additive prepared from (i) triamine containing secondary amine or secondary amine salt unit(s) and (ii) one or more other monomer and/or polymer units. One polymeric additive comprises polyamide selected from the group consisting of poly-imino-bisalkylene-terephthalamide, -isophthalamide and -1,6-naphthalamide, and salts thereof. Also, the polymeric additive, the blends, shaped articles (e. g. , fibers and films), processes of dyeing, and processes for preparing an acid dyeable polyester composition.

US Patent:

20030045651, Mar 6, 2003

Filed:

Aug 20, 2002

Appl. No.:

10/223962

Inventors:

Yanhui Sun - Wilmington DE, US
Jun Zhao - Newark DE, US

International Classification:

C08G063/91

US Classification:

525/419000

Abstract:

An acid-dyeable polyester composition comprising (a) polyester and (b) secondary amine or secondary amine salt in an amount effective to promote acid-dyeability. The acid-dyeable polyester composition may be prepared by melt blending: the polyester; and polymeric additive prepared from (i) triamine containing secondary amine or secondary amine salt unit(s) and (ii) one or more other monomer and/or polymer units. One polymeric additive comprises polyamide selected from the group consisting of poly-imino-bisalkylene-terephthalamide, -isophthalamide and -1,6-naphthalamide, and salts thereof. Also, the polymeric additive, the blends, shaped articles (e.g., fibers and films), processes of dyeing, and processes for preparing an acid dyeable polyester composition.

US Patent:

20140273887, Sep 18, 2014

Filed:

Mar 3, 2014

Appl. No.:

14/195122

Inventors:

- Libertyville IL, US
Jun S. Zhao - Vernon Hills IL, US

Assignee:

MOTOROLA MOBILITY LLC - Libertyville IL

International Classification:

H03H 7/40
H04B 1/40

US Classification:

455 77

Abstract:

A method and system configures a wireless communication device to support simultaneous signal propagation using a single narrow band antenna. An antenna tuner controller (ATC) configures a tunable low band matching circuit to provide a first antenna matching in order to support propagation of a low band signal with a first signal path. The ATC configures a tunable high band matching circuit to provide a second antenna matching which can support propagation of a high band signal within a second signal path. In addition, the ATC provides isolation between the tunable matching circuits, utilizing a diplexer circuit having a low band component coupled to the first signal path and a high band component coupled to the second signal path. The ATC simultaneously propagates the low and high band signals using a single, shared narrow band antenna coupled to the first and second signal paths.