ALKYL METHACRYLATE/ALKYL ACRYLATE COPOLYMERS USED AS SIZING FOR REINFORCING FIBER
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United States of America Patent
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Issued Date -
Nov 10, 2011
app pub date -
Dec 28, 2009
filing date -
Dec 29, 2008
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Abandoned
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Abstract
Reinforcing fiber for use in thermoplastic or thermosetting matrix resin are sized with one or more copolymer composition(s) obtainable by reacting: a) 5-90 pphwm of at least one alkyl methacrylate having a Tg of more than 40° C.; and b) 5-50 pphwm of at least one alkyl acrylate having a Tg of less than 0° C.; and c) 0.1-20 pphwm of at least one C3-C6 unsaturated carboxylic acid; and d) at least one further comonomer selected from the group comprising: (i) 5-50 pphwm of at least one vinyl ester of neoalkanoic acid, and (ii) 10-60 pphwm of at least one vinyl ester of α-monosubstituted fatty acids, and (iii) 5-50 pphwm of vinyl esters of an aromatic carboxylic acid, and (iv) other comonomers.
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