| 摘要 |
Disclosed are high frequency-active blends comprising (a) ethylene copolymers with polar comonomers such as ethylene/vinyl acetate copolymers, ethylene/alkyl (meth)acrylate copolymers and ethylene/(meth)acrylate/carbon monoxide terpolymers; (b) copolymers of ethylene and maleic anhydride or its functional equivalents and (c) a short chain polymer containing one primary amine, the remainder comprising propylene oxide, ethylene oxide, or mixture thereof; and films, powders, multilayer structures, and articles prepared therefrom. |
| 主权项 |
1. A composition comprising:
(a) at least one ethylene copolymer present in an amount of about 20 to about 90 parts by weight of the combination of (a), (b) and (c), wherein the copolymer comprising copolymerized units of ethylene and copolymerized units of a polar comonomer selected from vinyl acetate, alkyl methacrylate, alkyl acrylate, carbon monoxide or mixtures thereof, wherein said polar comonomer is present in the copolymer in an amount from about 6 to about 40 weight %; (b) a copolymer comprising copolymerized units of ethylene and copolymerized units of a comonomer providing an amine-reactive site comprising an anhydride group, a vicinal pair of carboxylic groups or a carboxylic group adjacent to an alkoxycarbonyl group, wherein the alkoxy group contains up to 20 carbon atoms, and optionally copolymerized units of a third comonomer, wherein the amine-reactive site is present in the copolymer in an amount of from 6 to 25 weight %, in an amount of from about 10 to about 80 parts by weight of the combination of (a), (b) and (c); and (c) a short chain polymer having from about 5 to 50 repeat units and containing one primary amine active amine site, the remainder of the side chain polymer being substantially unreactive with the amine-reactive sites of the copolymer of (b) and comprising propylene oxide, ethylene oxide, or mixture thereof, in an amount of from about 3 to about 30 parts by weight of the combination of (a), (b) and (c). |
