Patent ID: 6222000
Filing Date: 2001-04-24
Classification: B32B,C08G,C08J,D01F,Y10T

Abstract:
A process for forming highly stretchable, amorphous anisotropic melt-forming polymers which comprises incorporating recurring unit V selected from the group consisting of: ##STR38##and mixtures thereof, wherein R.sup.1 is independently selected from the group consisting of hydrogen and C.sub.1 to C.sub.6 alkyl, into a polymer comprising recurring units I, II, III, and IV, wherein recurring unit I is ##STR39##recurring unit II is: ##STR40##recurring unit III is: ##STR41##wherein Ar.sup.1 is selected from the group consisting of: ##STR42##and mixtures thereof;and recurring unit IV is:--O--Ar.sup.2 --X-- IVwherein Ar.sup.2 is selected from the group consisting of: ##STR43##and mixtures thereof, and X is independently selected from the group consisting of O and NR.sup.2 wherein R.sup.2 is independently selected from the group consisting of hydrogen and C.sub.1 to C.sub.6 alkyl; to provide a polymer that consists essentially of from about 15 to about 60 mole percent of recurring unit I, from about 15 to about 60 mole percent of recurring unit II, from about 5 to about 20 mole percent of recurring unit III, from about 5 to about 20 mole percent of recurring unit IV, and from about 7 to about 15 mole percent of recurring unit V and wherein:(a) recurring units I and II combined are present in the polymer in an amount of from about 50 to about 75 mole percent, and(b) the polymer contains at least about 5 mole percent of recurring units of the formula: ##STR44##with the proviso that recurring unit II is present in the polymer in an amount of at least about 30 mole percent, if and when the polymer also contains: ##STR45##in combination with a total of from about 0 to about 5 mole percent of units selected from the group consisting of units (Va), (Vb) and (Vd) and mixtures thereof.