Polymer mixture and films prepared therefrom

Details Polymer mixture and films prepared therefrom Polymer mixture and films prepared therefrom

1996-08-27

1997-12-30

Warzel, Mark L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

4284744, 4284755, 428290, C08G 6348

Patent

active

057031614

ABSTRACT:
The invention relates to a polymer mixture which contains (A) 50 to 85 wt. % of a polyether block amide consisting of 30 to 60 wt. % of polyamide-12, polyamide-11 and/or polyamide-12,12 blocks and 70 to 40 wt. % of polyethylene glycol blocks,
(B) 10 to 40 wt. % of a polyether block amide consisting of 65 to 85 wt. % of polyamide-12, polyamide-11 and/or polyamide-12,12 blocks and 35 to 15 wt. % of polyethylene glycol blocks, and
(C) 5 to 40 wt. % of a poly(ethylene-co-vinylacetate-g-maleic anhydride) polymer consisting of 75 to 95 wt. % of ethylene, 5 to 25 wt. % of vinylacetate and 0.1 to 2 wt. % of maleic anhydride,
wherein the data relating to wt. % for the constituents (A), (B) and (C) are with reference to the total amount of polymer mixture. The invention also relates to films produced from this polymer mixture and the use of these films to produce waterproof, water vapor permeable, wind resistant textile composite materials, dressing materials and hygiene items.

REFERENCES:
patent: 4230838 (1980-10-01), Foy et al.
patent: 4252920 (1981-02-01), Deleens et al.
patent: 4370374 (1983-01-01), Raabe et al.
patent: 4707528 (1987-11-01), Koizumi et al.
patent: 5024792 (1991-06-01), Havens
patent: 5140065 (1992-08-01), Dalla et al.
patent: 5348804 (1994-09-01), Vasselin et al.
patent: 5356709 (1994-10-01), Woo et al.
patent: 5369179 (1994-11-01), Havens

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