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1. (WO1992010527) PROCESS FOR FABRICATING ORIENTED POLYBENZAZOLE FILMS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010527 International Application No.: PCT/US1991/009228
Publication Date: 25.06.1992 International Filing Date: 06.12.1991
Chapter 2 Demand Filed: 06.05.1992
IPC:
B29C 55/08 (2006.01) ,B29D 7/01 (2006.01) ,C08J 3/02 (2006.01) ,C08J 5/18 (2006.01)
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
55
Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02
of plates or sheets
04
uniaxial, e.g. oblique
08
transverse to the direction of feed
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
D
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
7
Producing flat articles, e.g. films or sheets
01
Films or sheets
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
3
Processes of treating or compounding macromolecular substances
02
Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
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
5
Manufacture of articles or shaped materials containing macromolecular substances
18
Manufacture of films or sheets
Applicants:
THE DOW CHEMICAL COMPANY [US/US]; 2030 Dow Center Abbott Road Midland, MI 48640, US
Inventors:
PIERINI, Peter, E.; US
VERMEULEN, Robbert, M.; US
DOLLINGER, Susan, E.; US
WESSLING, Ritchie, A.; US
KIM, Peter, K.; US
Agent:
MAURER, Charles, J., III; The Dow Chemical Company Patent Dept. P.O. Box 1967 Midland, MI 48641-1967, US
Priority Data:
624,16407.12.1990US
670,13515.03.1991US
Title (EN) PROCESS FOR FABRICATING ORIENTED POLYBENZAZOLE FILMS
(FR) PROCEDE D'ETIRAGE DE POLYMERES DE CRISTAUX LIQUIDES LYOTROPES
Abstract:
(EN) Films containing polybenzazole polymer dissolved in a solvent can be mechanically stretched to provide biaxial orientation. The resulting dope film can be coagulated. The polymer film has improved properties in the direction in which stretching occurs.
(FR) On peut étirer mécaniquement des pellicules contenant un polymère de polybenzazole dissous dans un solvant, afin d'obtenir une orientation biaxiale. On peut coaguler la pellicule de dopage obtenue. La pellicule polymère possède des qualités améliorées dans le sens de l'étirage.
Designated States: CA, JP, KR
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:
EP0560923JPH06503521CA2097296KR1019930703378