Abstract: Novel aromatic poly(ether ketones) having imide, amide, ester, azo, quinoxaline, benzimidazole, benzoxazole, or benzothiazole groups, comprising, for example, a repeat unit ##STR1## are prepared by Friedel Crafts polymerization.

Abstract: A sheet laminate of polyimide and amorphous polyamide especially suitable for making anisotropically electrically conductive articles by laser abiation drilling followed by metal plating. Preferred polyimides include those derived from polymerization of 4,4'biphenyldianhydride and 4,4'-diaminobiphenylether or p-phenylenediamine. Preferred amorphous polyamides include those derived from condensation of terephthalic acid with isomers of trimethylhexamethylenediamine.

Abstract: Aromatic carbonyl compounds, in particular arylene ether ketones, are prepared by reacting an appropriate reagent system in the presence of free Lewis acid and a complex between a Lewis acid, for example, aluminum trichloride, and an inorganic salt controlling agent, for example, lithium chloride, and, optionally, a diluent, such as methylene chloride. The process is particularly advantageous for the preparation of substantially or all para-linked arylene ether ketones as the presence of the Lewis acid/Lewis base complex markedly reduces alkylation and ensures the substantial absence of ortho substitution.

Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerise together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.

Abstract: Partially crystalline polyaryletherketones having improved glass transition temperature without unacceptably high melting temperature are produced by incorporating multi-ring aryl moieties (e.g. terphenyls of naphthyls) in the polymer backbone and mono-substituting those or other moieties in the backbone, or arranging the aryl multi-ring groups asymmetrically so as to kink the backbone.

Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerise together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.

Abstract: Poly(arylene ether ketones) are prepared by a Friedel-Crafts polymerization wherein a gelled reaction mixture is produced, by permitting the polymerization to proceed in a first reactor until substantial partial polymerization has occurred, but before substantial gelation of the reaction mixture; transferring the partially polymerized reaction mixture into a piston-equipped second reactor; permitting polymerization to continue in the second reactor until a gelled, polymerized reaction mixture has been obtained; and discharging the polymerized reaction mixture from the second reactor by stroking the piston.

Abstract: Novel aromatic poly(ether ketones) having imide, amide, ester, azo, quinoxaline, benzimidazole, benzoxazole, or benzothiazole groups, comprising, for example, a repeat unit ##STR1## are prepared by Friedel Crafts polymerization.

Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerize together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.

Abstract: A method of preparing a poly(arylene ether ketone) by a Friedel-Crafts polymerization wherein a gelled reaction mixture is produced, comprising the steps of:(A) forming, in a first reactor, a reaction mixture for polymerization comprising(I) a monomer system comprising(a) (i) phosgene or an aromatic dicarboxylic acid dihalide and (ii) a substantially stoichiometric amount of a polynuclear aromatic comonomer having two active hydrogen atoms or(b) a polynuclear aromatic carboxylic acid halide having an active hydrogen atom; and(II) a Lewis acid in an amount of at least one equivalent per equivalent of carbonyl groups in the monomer system, plus an amount effective to act as a catalyst for the polymerization;(B) permitting the reaction mixture to polymerize in the first reactor until substantial partial polymerization has occurred, but before substantial gelation of the reaction mixture;(C) transferring the partially polymerized reaction mixture into a second reactor having a nozzle at one end thereof and a pist

Abstract: Aromatic carbonyl compounds, in particular arylene ether ketones, are prepared by reacting an appropriate reagent system in the presence of free Lewis acid and a complex between a Lewis acid, for example, aluminum trichloride, and a Lewis base, for example, N,N-dimethylformamide, and, optionally, a diluent, such as methylene chloride. The process is particularly advantageous for the preparation of substantially or all para-linked arylene ether ketones as the presence of the Lewis acid/Lewis base complex markedly reduces alkylation and ensures the substantial absence of ortho substitution.

Abstract: A new linear polyester contains in its chain the residues of a hydroxy-bis(hydroxyalkoxy)xanth-9-one e.g. polyethylene terephthalate containing such residues which act as a UV stabilizer. Processes for the preparation of the polymers include the reaction of a dibasic acid, glycol and 1,3,6-trihydroxyxanthone whereby only two of the xanthone hydroxyl groups take part in the polyester-forming reaction.

Abstract: UV stable linear polyesters, e.g. PET, contain in their chain copolymerized bis(hydroxyalkoxy)xanth-9-ones, preferably 3,6-bis-(2-hydroxyethoxy)xanth-9-ones. The polymers are obtained by polymerization in the presence of a tetrahydroxy benzophenone, preferably the 2,2',4,4'-isomer. The method of polymerizing in the presence of dihydric phenols to obtain ethoxyaryloxy polyesters is also described.

Abstract: UV stable linear polyesters, e.g. polyethylene terephthalate, contain in their chain copolymerized 2-hydroxy-di(hydroxyalkoxy)benzophenone. The polyesters are useful for making biaxially oriented films. The polyesters can be made by polycondensation in the presence of 2,4,4'-trihydroxybenzophenone.

Abstract: UV stable linear polyesters, e.g. polyethylene terephthalate, contain in their chain copolymerized esterification residues of di(hydroxyalkoxy)coumarins. The polyesters are useful for making biaxially oriented films. The polyesters can be made by polycondensation in the presence of 4-methyl-6,7-dihydroxy-coumarin.

Abstract: UV stable linear polyesters, e.g. PET, contain in their chain copolymerized bis(hydroxyalkoxy)xanth-9-ones, preferably 3,6-bis-(2-hydroxyethoxy)xanth-9-ones. The polymers are obtained by polymerization in the presence of a tetrahydroxy benzophenone, preferably the 2,240 ,4,4'-isomer. The method of polymerizing in the presence of dihydric phenols to obtain ethoxyaryloxy polyesters is also described.

Abstract: UV stable linear polyesters, e.g. PET, contain in their chain copolymerized bis(hydroxyalkoxy)xanth-9-ones, preferably 3,6-bis-(2-hydroxyethoxy)xanth -9-ones. The polymers are obtained by polymerization in the presence of a tetrahydroxy benzophenone, preferably the 2,2',4,4'- isomer. The method of polymerizing in the presence of dihydric phenols to obtain ethoxyaryloxy polyesters is also described.

Abstract: The new compounds are phosphates derived from mono- and di-hydric phenols with blocking groups on at least 75% of the ring carbon atoms adjacent to the carbon atoms attached to the phosphate groups, e.g. phosphates derived from 2,6-dimethyl phenol and 3,3',5,5'-tetramethyl-4,4'-dihydroxybiphenyl.