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1. (US20060199871) Multilayered, transparent articles and a process for their preparation

Office : United States of America
Application Number: 11363418 Application Date: 27.02.2006
Publication Number: 20060199871 Publication Date: 07.09.2006
Publication Kind : A1
IPC:
C08J 11/00
C08J 11/04
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
11
Recovery or working-up of waste materials
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
11
Recovery or working-up of waste materials
04
of polymers
Applicants: HALE WESLEY R
PECORINI THOMAS J
STEWART MARK E
ROGERS MARTIN E
GILLIAM SPENCER A
CLIFFTON MICHAEL D
Inventors: Hale Wesley Raymond
Pecorini Thomas Joseph
Stewart Mark Edward
Rogers Martin Emerson
Gilliam Spencer Allen
Cliffton Michael Duane
Agents: ERIC D. MIDDLEMAS;EASTMAN CHEMICAL COMPANY
Priority Data: 11363418 27.02.2006 US
60657746 02.03.2005 US
60657747 02.03.2005 US
Title: (EN) Multilayered, transparent articles and a process for their preparation
Abstract:
(EN)

Disclosed is a process for the preparation of multilayered, shaped articles having high transparency and low haze and comprising one or more thermoplastic polymers selected from polyesters, polycarbonates, and polyarylates, and a copolyamide or a transamidized, homogeneous blend of a least two polyamides. The thermoplastic polymer components and the polyamide components have refractive indices which differ by about 0.006 to about −0.0006. The small difference in the refractive indices enable the incorporation of regrind into one or more of the layers of the article while maintaining high clarity. These articles can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into one or more layers to impart oxygen-scavenging properties.