AROMATIC POLYAMIDE ORIENTED FILM

• Main Author: NANBA HIROYUKI
• Format: Patent
• Language: English
• Published: 15.06.2006
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

PROBLEM TO BE SOLVED: To provide an aromatic polyamide oriented film having good gas-barrier properties and transparency. SOLUTION: The aromatic polyamide oriented film is obtained by orienting an aromatic polyamide resin at >4 draw ratio in MD- and/or TD-direction. The aromatic polyamide resin comprises a diamine structural unit containing ≥70 mol% m-xylylenediamine unit, and a dicarboxylic acid structural unit containing 80-97 mol% 4-20C α,ω-linear aliphatic dicarboxylic acid unit and 3-20 mol% isophthalic acid unit, and has 40-2,000 sec shortest half-crystallization time. COPYRIGHT: (C)2006,JPO&NCIPI