C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 5/18 (2006.01) C08L 77/00 (2006.01) C08L 77/02 (2006.01) C08L 77/06 (2006.01)
Patent
CA 2176576
The present invention provides a film produced by forming a bubble from a composition comprising: (a) up to about 99.9 weight percent based on the total weight of the composition of a polyamide, and (b) at least about 0.1 weight percent based on the total weight of the composition of a polyolefin having functional groups which are reactive with the functional groups of the polyamide wherein the functional groups of the polyolefin are present in an amount sufficient to maintain the strength of the bubble. The film is particularly useful as a carrier film in the production of sandwich composites of sheet molding compound and thick molding compound.
L'invention concerne un film produit par formation d'une bulle à partir d'une composition constituée de: (a) au plus environ 99,9 % en poids de polyamide par rapport au poids total de la composition; et (b) d'au moins environ 0,1 % en poids par rapport au poids total de la composition de polyoléfine contenant des groupes fonctionnels réagissant avec les groupes fonctionnels du polyamide, les groupes fonctionnels de la polyoléfine étant en dose suffisante pour maintenir la résistance de la bulle. Ledit film est particulièrement utile en tant que substrat dans la production de composites de typo sandwich constitués d'un préimprégné et d'un composé de moulage épais.
Altman Carl Elliot
Davis Henry Irvin
Furrer William Walter
Long Thomas Charles
Mackey Joseph Edgar
Alliedsignal Inc.
Altman Carl Elliot
Davis Henry Irvin
Furrer William Walter
Gowling Lafleur Henderson Llp
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