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1. (WO1992009649) COMPOSITES HAVING IMPROVED SURFACE PROPERTIES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009649 International Application No.: PCT/US1991/008752
Publication Date: 11.06.1992 International Filing Date: 27.11.1991
Chapter 2 Demand Filed: 29.05.1992
IPC:
C08J 9/26 (2006.01) ,D01F 8/04 (2006.01)
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
9
Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
26
by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
D TEXTILES; PAPER
01
NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
F
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
8
Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
04
from synthetic polymers
Applicants:
E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, DE 19898, US
Inventors:
SANFORD, William, Michael; US
UY, William, C.; US
Agent:
SULLIVAN, Daniel, W.; E.I. du Pont de Nemours and Company Legal/Patent Records Center 1007 Market Street Wilmington, DE 19898, US
Priority Data:
619,14928.11.1990US
Title (EN) COMPOSITES HAVING IMPROVED SURFACE PROPERTIES
(FR) COMPOSITES PRESENTANT DES CARACTERISTIQUES DE SURFACE AMELIOREES
Abstract:
(EN) Polymeric composite materials having a decreasing concentration gradient of polymer matrix from the material's surface to the material's interior are disclosed. The disclosure also includes a process for making such materials, whereby polymer matrix is extracted from the interior of the material in such a manner that the matrix concentration at the material's surface increases.
(FR) On décrit des matériaux composites polymères présentant un gradient de concentration de matrice polymère allant en décroissant de la surface du matériau jusqu'au centre de celui-ci. L'invention se rapporte aussi à un procédé de fabrication de tels matériaux, selon lequel une matrice polymère est extraite de l'intérieur du matériau de telle manière que la concentration de la matrice à la surface du matériau est augmentée.
Designated States: AU, BR, CA, JP, KR, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0559778JP3266251JPH06502880CA2095869KR1001860460000*AU1991091028