Abstract: Pigments and compositions for use in laser marking. A colorless UV-absorbing pigment at least partially coated with a synergist has the formula [Rm(SiOn)]pR′q, wherein (a) m is 1 to 3, n is 1 to 3, p is at least 1, and q is 0 to 3, and (b) at least one R or R′ is a substituent that upon pyrolysis generates a black material suitable for providing a mark. Such pigments are useful in fluoropolymers used for wire and cable insulation.

Abstract: Pigments and compositions for use in laser marking.

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: 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: This invention relates to novel copolymers derived from diphenyl ether, terephthalic acid derivative and a third monomer of the formula ##STR1## where n=1 or 2. The copolymers can be prepared by Friedel-Crafts polymerization. Preferred copolymers are derived from diphenyl ether, terephthaloyl chloride, and 1,4-diphenoxybenzene.

Abstract: A polymer of the general formula: R'--M--Ar--B--Ar'--MArBAr'--.sub.k-2 M--Ar--B--Ar'--R wherein M and D, which can be the same or different, are independently ##STR1## wherein each Ar is independentlyR'--M--Ar--D--Ar'[--MArDAr'--].sub.k-2 M--Ar--D--Ar'--R"wherein L is ##STR2## phenyleneoxy, ##STR3## a covalent bond or T, wherein T is as defined belowand each Ar' is independently ##STR4## wherein T is O, S, phenyleneoxy, or --CR.sub.2 -- wherein R is as defined below, or --O--Ar--O-- wherein Ar can have any of the values set forth above and wherein R' and R" are independently ##STR5## wherein X is a covalent bond, --O--, --S--, or --CR.sub.2 -- wherein each R is independently hydrogen, an alkyl or fluoroalkyl group, preferably of 1 to 10 carbons, phenyl or an electron withdrawing group substituted phenyl, Y is CN, NO.sub.2, ##STR6## or if X is a covalent bond, Y can be hydrogen as well as any of the foregoing; or Ar"CO-- or Ar"SO.sub.

Abstract: In a Friedel-Crafts catalyzed polymerization reaction, said reaction being selected from the group consisting ofn(X--A--X)+n(H--B--H).fwdarw.2n-1HX+X(AB).sub.n Hwherein A is ##STR1## and wherein X is halogen, hydroxy, or alkoxy, and wherein R is alkylene, aryl substituted alkylene, arylene or substituted arylene, or polynuclear aromatic either fused ring or joined by one or more bridging groups such as oxygen, sulfur or a moiety of the structure ##STR2## wherein Z is propylidene, CO, SO.sub.2, or a chemical bond and wherein B is arylene or substructured arylene, or polynuclear aromatic either fused ring or joined by one or more bridging groups such as CO, oxygen, sulfur or a moiety of the structure ##STR3## wherein Z is as defined above, and wherein n is the degree of polymerization and is at least about 5 andn(XDH).fwdarw..sub.n-1 HX+X(D).sub.n Hwherein X is as defined above and wherein D is CO--B-- or --SO.sub.

Abstract: The molecular weight of highly aromatic polymers made by the Friedel-Crafts polymerization of EN monomers of the formula Ar--L--Ar.sup.1 --X, wherein X is selected from SO.sub.2 Y or COY, Y being a radical selected from --OH, halogen, or alkyl, wherein Ar and Ar.sup.1 are independently ##STR1## wherein L is --CO--, --SO.sub.2 --, phenyleneoxy, --NHCO--, a covalent bond, --O--, or --CR.sub.2 --, wherein each R is independently hydrogen, an alkyl or fluoroalkyl group, phenyl or a phenyl group substituted by an electron withdrawing group such as halogen, NO.sub.2 or --CN, is controlled by including in the reaction mixture an acylatable aromatic compound whose rate of acylation under Friedel-Crafts conditions is at least about 150 times that of benzene. The molecular weight of other polymers made from EN type monomers by Friedel-Crafts catalysis can also be controlled in this way.

Abstract: Polymers whose repeating units are of structure ##STR1## are prepared by polymerization of novel biphenylyloxybenzoyl moiety-containing monomers reactive in HF and BF.sub.3 to form carboxonium ion-containing intermediates (e.g., biphenylyloxybenzoyl halide monomer), preferably in the presence of aromatic capping agents sufficient in amount to yield polymer of mean inherent viscosity from about 0.5 to 1.7. Such polymer may be employed, e.g., for insulative coating of conductive articles such as wire and cable.

Abstract: Described herein are melt-processable, solvent resistant polymers comprised of repeating units of formula ##STR1## having a tensile elongation to break of at least about 50% at room temperature and mean inherent viscosity within the range from about 0.8 to about 1.65. The polymers, which are suitable for high temperature resistant wire insulation, are prepared, e.g., by the hydrogen fluoride-boron trifluoride catalyzed polymerization of a p-phenoxybenzoyl moiety-containing monomer (e.g., p-phenoxybenzoyl halide, p-phenoxybenzoic acid, or C.sub.1 -C.sub.3 alkyl p-phenoxybenzoates) in the presence of a capping agent whose reactivity to acetylation is greater than about 150 relative to benzene reactivity of 1. Wet workup and spray drying techniques are described, the latter preferably including dilution of hydrogen fluoride with liquid SO.sub.2, either before or after polymerization.

Abstract: Polymers whose repeating units are of structure ##SPC1##Are prepared by polymerization of novel biphenylyloxybenzoyl moiety-containing monomers reactive in HF and BF.sub.3 to form carboxonium ion-containing intermediates (e.g., biphenylyloxybenzoyl halide monomers), preferably in the presence of aromaic capping agents sufficient in amount to yield polymer of mean inherent viscosity from about 0.5 to 1.7. Such polymer may be employed, e.g., for insulative coating of conductive articles such as wire and cable.

Abstract: Melt-stable aromatic polyketones useful in, eg, electrical insulation and comprised of, eg, the recurring unit ##SPC1##Wherein m, n and x are 0 or 1 (n being 0 when x is 1) are prepared by HF/BF.sub.3 -catalyzed polymerization at 0.degree.C of appropriately chosen nucleophilic and electrophilic coreactants, preferably terephthaloyl chloride and 1,4 -diphenoxybenzene (m=1, x and n=0).

Abstract: Described herein are melt-processable, solvent resistant polymers comprised of repeating units of formula ##SPC1##Having a tensile elongation to break of at least about 50% at room temperature and mean inherent viscosity within the range from about 0.8 to about 1.65. The polymers, which are suitable for high temperature resistant wire insulation, are prepared, e.g., by the hydrogen fluoride-boron trifluoride catalyzed polymerization of a p-phenoxybenzoyl moiety-containing monomer (e.g., p-phenoxybenzoyl halide, p-phenoxybenzoic acid, or C.sub.1 -C.sub.3 alkyl p-phenoxybenzoates) in the presence of a capping agent whose reactivity to acetylation is greater than about 150 relative to benzene reactivity of 1. Wet workup and spray drying techniques are described, the latter preferably including dilution of hydrogen fluoride with liquid SO.sub.2, either before or after polymerization.