A class of polyamides comprising recurring units having substituted-quaterphenylene radicals is disclosed. The polymers comprise recurring units of the formula ##STR1## wherein each of A and B is a divalent radical, except that B can represent a single bond; R and R.sup.1 are each hydrogen, alkyl, aryl, alkaryl or aralkyl; and c is zero or one; and wherein, when c is one, at least one of A and B is a substituted-quaterphenylene radical having the formula ##STR2## where each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen, each p is an integer from 1 to 3, each X is hydrogen or a substituent other than hydrogen and each r is an integer from 1 to 4, the U, W.sub.p and X.sub.r substitution being sufficient to provide the radical with a non-coplanar molecular configuration; and wherein, when c is zero, A is a substituted-quaterphenylene radical as aforedescribed. The polyamide materials exhibit solubility in select solvents including those of the non-amide type and are characterized by high electron density substantially cylindrically distributed about the long axis thereof. The molecularly oriented polymers are optically uniaxial and are suited to application in optical filter and other devices where a highly refractive and birefringent polymeric material is desired.
A class of polyamides comprising recurring units having certain substituted-biphenylene or substituted-stilbene radicals is disclosed. The substituted radicals include substituents so as to confer a non-coplanar molecular configuration and a substantially cylindrical distribution of electron density about the long axis of the recurring units and the chain-extended polymers including such radicals. Molecularly oriented polymers of the invention exhibit optically uniaxial properties. The highly birefringent polymers are suited to application in optical filter and other devices where a refractive and birefringent material is desired.
Substituted-quaterphenylene monomers for the production of polyamides
申请人:Polaroid Corporation
公开号:US04503248A1
公开(公告)日:1985-03-05
A class of polyamides comprising recurring units having substituted-quaterphenylene radicals is disclosed. The polymers comprise recurring units of the formula ##STR1## wherein each of A and B is a divalent radical, except that B can represent a single bond; R and R.sup.1 are each hydrogen, alkyl, aryl, alkaryl or aralkyl; and c is zero or one; and wherein, when c is one, at least one of A and B is a substituted-quaterphenylene radical having the formula ##STR2## where each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen, each p is an integer from 1 to 3, each X is hydrogen or a substituent other than hydrogen and each r is an integer from 1 to 4, the U, W.sub.p and X.sub.r substitution being sufficient to provide the radical with a non-coplanar molecular configuration; and wherein, when c is zero, A is a substituted-quaterphenylene radical as aforedescribed. The polyamide materials exhibit solubility in select solvents including those of the non-amide type and are characterized by high electron density substantially cylindrically distributed about the long axis thereof. The molecularly oriented polymers are optically uniaxial and are suited to application in optical filter and other devices where a highly refractive and birefringent polymeric material is desired.
Polyamides comprising recurring units
wherein A and B are divalent radicals, except that B can represent a single bond; R and R' are each hydrogen, alkyl, aryl, alkaryl or aralkyl; and c = 0 or 1; and wherein, when c is one, at least one of A and B is a substituted-quaterphenylene radical
where each U is a substituent otherthan hydrogen, each W is hydrogen or other substituent, each p = 1 - 3, each X is hydrogen or another substituent and each r = 1 - 4, the U, W and Xr substitution providing the radical with a non-coplanar molecular configuration; and wherein, when c is zero, A is a substituted-quaterphenylene radical.
The polyamides exhibit solubility in select (e.g. non-amide type) solvents and have high electron density substantially cylindrically distributed about their long axis. The molecularly oriented polymers are optically uniaxial and are useful e.g. in optical filter devices.
由循环单元组成的聚酰胺
其中 A 和 B 是二价基,但 B 可以代表单键;R 和 R'各自是氢、烷基、芳基、烷芳基或芳烷基;c = 0 或 1;当 c 为 1 时,A 和 B 中至少有一个是取代的四亚苯基基
其中每个 U 是氢以外的取代基,每个 W 是氢或其他取代基,每个 p = 1 - 3,每个 X 是氢或其他取代基,每个 r = 1 - 4,U、W 和 Xr 取代基使自由基具有非共面分子构型;当 c 为 0 时,A 是取代的四亚苯基自由基。
聚酰胺在特定(如非酰胺类)溶剂中具有溶解性,并且电子密度高,基本上围绕长轴呈圆柱形分布。分子取向聚合物具有光学单轴性,可用于光学滤光设备等。