Process for stretching a swollen flexible-chain polymer
AssigneeDsm N.V.
InventorsHendrikus J. J. Rutten, Adrianus W. M. Braam
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Abstract
Process for stretching an article substantially consisting of a flexible-chain polymer, which is swollen in a solvent for that polymer, in which process an article substantially consisting of a copolymer of the polymer with a second polymer is swollen in a selective solvent for the flexible-chain polymer, and stretched, and an article containing an oriented flexible-chain polymer with a dichroic ratio of at least 1.1.
Claims17
A process for stretching an article containing a flexible-chain polymer, and article consisting essentially of a block copolymer of a first and a second polymer, said first polymer being said flexible-chain polymer, wherein said article is swollen in a solvent selected from said first polymer, and then stretched, whereby an article containing an oriented first polymer is obtained.
Article substantially consisting of a block copolymer of a first and a second polymer, which first polymer is an oriented flexible-chain polymer, of which the dichroic ratio, determined with polarized infrared spectroscopy, is at least 1.1.
A process for stretching an article, said article consisting essentially of a block copolymer of a first and a second polymer, wherein said article is swollen in a first solvent selected from said first polymer, and then stretched, said article then being swollen in a second solvent selected for said second polymer, and then stretched, whereby an article containing oriented first and second polymers is obtained.
Dependencies are inferred from the claim text.