Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1992010549) NON-STICK COATING SYSTEM WITH PTFE OF DIFFERENT MELT VISCOSITIES FOR CONCENTRATION GRADIENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010549 International Application No.: PCT/US1991/009064
Publication Date: 25.06.1992 International Filing Date: 10.12.1991
Chapter 2 Demand Filed: 19.06.1992
IPC:
C08L 27/18 (2006.01) ,C08L 79/08 (2006.01) ,C08L 81/06 (2006.01) ,C09D 127/18 (2006.01) ,C09D 179/08 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
27
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
02
not modified by chemical after-treatment
12
containing fluorine atoms
18
Homopolymers or copolymers of tetrafluoroethene
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
79
Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08L61/-C08L77/259
04
Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
08
Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
81
Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
06
Polysulfones; Polyethersulfones
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
D
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
127
Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
02
not modified by chemical after-treatment
12
containing fluorine atoms
18
Homopolymers or copolymers of tetrafluoroethene
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
D
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
179
Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/-C09D177/274
04
Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
08
Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
Applicants:
E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, DE 19898, US
Inventors:
TANNENBAUM, Harvey, Paul; US
Agent:
BURGESS, Richard, H. ; E.I. du Pont de Nemours & Company Legal/Patent Records Center 1007 Market Street Wilmington, DE 19898, US
Priority Data:
626,49912.12.1990US
626,50012.12.1990US
626,60712.12.1990US
Title (EN) NON-STICK COATING SYSTEM WITH PTFE OF DIFFERENT MELT VISCOSITIES FOR CONCENTRATION GRADIENT
(FR) SYSTEME DE REVETEMENT NON COLLANT A PTFE DE DIFFERENTES VISCOSITES A CHAUD PERMETTANT D'OBTENIR UN GRADIENT DE CONCENTRATION
Abstract:
(EN) Improved non-stick coating systems can be applied to untreated smooth substrate with a primer of a first polytetrafluoroethylene having a melt viscosity over 105 Pa Sec plus a second polytetrafluoroethylene having a melt viscosity in the range of 102 to 107 Pa Sec, with the melt viscosity of the first being at least 102 Pa Sec higher than that of the second to give a concentration gradient.
(FR) On applique des systèmes de revêtement non collants améliorés sur un substrat lisse non traité avec une première couche d'un premier polytétrafluoroéthylène présentant une viscosité à chaud supérieure à 105 Pa Sec, plus un second polytétrafluoroéthylène présentant une viscosité à chaud située dans la plage comprise entre 102 et 107 Pa Sec, la viscosité à chaud du premier polytétrafluoroéthylène étant d'au moins 102 Pa Sec supérieure à celle du second polytétrafluoroéthylène afin d'obtenir un gradient de concentration.
Designated States: AU, BR, CA, JP, KR, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0561987JPH06501974CA2099614KR1019930703407AU1991091436