Laminates of wholly aromatic liquid crystalline polymers containing ionic monomer units
AssigneeHoechst Celanese Corporation
InventorsJames P. Shepherd, Gerald Farrow, Kurt F. Wissbrun
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Abstract
A melt processable wholly aromatic liquid crystalline polymer capable of forming an anisotropic melt phase at a temperature below approximately 400.degree. C. having enhanced adhesion properties containing from approximately 0.05 to approximately 2.0 mole percent of a recurring sulfonated, ionic moiety in the backbone of the polymer. The polymer is useful for the production of laminate structures.
Claims19
A laminate structure exhibiting improved adhesion properties comprising at least a first and a second layer, the first layer consisting of a melt processable wholly aromatic liquid crystalline polymer capable of forming an anisotropic melt phase at a temperature below about 400.degree. C. and containing in the polymer backbone from approximately 0.05 to approximately 2.0 mole percent of at least one ionic recurring moiety selected from the formulae:
- ##STR4## wherein M.sup.+ is a cation, said polymer backbone being a melt processable wholly aromatic polymer selected from the group consisting of wholly aromatic polyesters, polycarbonates, poly(ester-carbonates), poly(ester-amides) and polyaramides, and wherein the second layer is selected from the group consisting of metals, ceramics, glasses, polymers, and mixtures thereof.
A laminate structure comprising at least a first and a second layer wherein said first layer consists of a liquid crystalline polyester capable of forming an anisotropic melt phase at a temperature below about 375.degree. C. comprising recurring moieties of (a) from approximately 10 to to approximately 90 mole percent of 4-oxybenzoyl;
- (b) from approximately 90 to approximately 10 mole percent of 6-oxy-2-naphthoyl;
- and (c) from approximately 0.05 to approximately 2.0 mole percent of at least one recurring ionic moiety selected from the formulae:
- ##STR7## wherein M.sup.+ is a cation, and said second layer is selected from the group consisting of metals, ceramics, glasses, polymers, and mixtures thereof.
A laminate structure which exhibits improved adhesion properties comprising a plurality of layers wherein at least a first layer consists of a melt processable wholly aromatic liquid crystalline polymer capable of forming an anisotropic melt phase at a temperature below about 400.degree. C. containing in the polymer backbone from approximately 0.05 to approximately 2.0 mole percent of at least one ionic recurring moiety selected from the formulae:
- ##STR8## wherein M.sup.+ is a cation, said polymer backbone being selected from the group consisting of wholly aromatic polyesters, polycarbonates, poly(ester-carbonates), poly(ester-amides), and polyaramides, and wherein at least one second layer is selected from the group consisting of metals, ceramics, glasses, polymers, and mixtures thereof.
Dependencies are inferred from the claim text.