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1. (AU1997011592) Method for controlling surface concentration of a polymer additive

Office : Australia
Application Number: 11592/97 Application Date: 13.11.1996
Publication Number: 1997011592 Publication Date: 31.07.1997
Publication Kind : A
Prior PCT appl.: Application Number:US1996018272 ; Publication Number: Click to see the data
IPC:
C08L 69/00
B29C 33/38
B29C 67/24
C08L 67/02
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
69
Compositions of polycarbonates; Compositions of derivatives of polycarbonates
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33
Moulds or cores; Details thereof or accessories therefor
38
characterised by the material or the manufacturing process
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
67
Shaping techniques not covered by groups B29C39/-B29C65/93
24
characterised by the choice of material
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
67
Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
02
Polyesters derived from dicarboxylic acids and dihydroxy compounds
CPC:
C08L 67/02
B29C 33/38
B29C 67/24
B29K 2995/0026
C08L 69/00
Applicants: Cobe Laboratories Inc.
Inventors: Forrestal, Lloyd
Voorhees, Marc
Priority Data: 12.11.1996 US
006764 15.11.1995 US
558321 15.11.1995 US
Title: (EN) Method for controlling surface concentration of a polymer additive
Abstract:
(EN) The surface free energy of a polymer blend where a base polymer contains an additive having a different surface free energy than that of the base polymer can be controlled over a wide range of additive surface concentrations by appropriate choice of the mold surface free energy during fabrication. A high surface concentration of additive relative to a low bulk concentration can be achieved, leading to improved biocompatibility without loss of optical clarity.
Also published as:
WO/1997/018265