Plural Chalcogens Bonded Directly To Ring Carbons Of The Five-membered Hetero Ring (e.g., Cyclic Imides, Naphthisatins, Etc.) Patents (Class 548/451)
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Patent number: 5175304Abstract: Polyetherimide oligomers having crosslinking end cap moieties which provide improved solvent-resistance to cured composites are generally represented by the formula: ##STR1## wherein X=--O-- or --S--; ##STR2## n=1 or 2; ##STR3## E=allyl or methallyl; R=a trivalent C.sub.(6-13) aromatic organic radical;R.sub.1 =any of lower alkyl, lower alkoxy, aryl, or substituted aryl;R'=a divalent C.sub.(6-30) aromatic organic radical;j=0, 1, or 2; andG=--CH.sub.2 --, --O--, --S--, or --SO.sub.2 --Blends generally comprise substantially equimolar amounts of the oligomers and a comparable, compatible, noncrosslinking, etherimide polymer of substantially the same backbone. The crosslinkable oligomers are made by reacting substituted phthalic anhydrides with hydroxyaryl amines and suitable crosslinking end cap reactants, or by self-condensation of phthalimide salts followed by capping the polymers.Type: GrantFiled: May 10, 1990Date of Patent: December 29, 1992Assignee: The Boeing CompanyInventors: Clyde H. Sheppard, Hyman R. Lubowitz
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Patent number: 5169923Abstract: Bisphenols having a pendent imide moiety, of formula (I) ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, are selected from hydrogen, fluorine, chlorine, bromine, alkyl of 1 to 6 carbon atoms, aryl of 6 to 10 carbon atoms, alkoxy of 1 to 6 carbon atoms and aryloxy of 6 to 10 carbon atoms; R.sub.5 is selected from fluorine, chlorine, bromine and alkyl of 1 to 6 carbon atoms, and m is 0, 1, 2, 3 or 4; and R.sub.7 is alkyl of 1 to 18 carbon atoms, aryl of 6 to 10 carbon atoms, unsubstituted or substituted one or more times by a substituent selected from fluorine, chlorine, trifluoromethyl, alkyl of 1 to 6 carbon atoms, and phenyl, or heteroaryl; are useful in producing poly(imidoarylether ketone)s and poly(-imidoarylether sulfone)s which are amorphous and are soluble in readily available solvents, while displaying high glass transition temperatures and good thermo-oxidative stability.Type: GrantFiled: November 26, 1991Date of Patent: December 8, 1992Inventors: Allan S. Hay, Marko Strukelj
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Patent number: 5151518Abstract: A process for the N-arylation of isatins with organo bismuth reagents is disclosed.Type: GrantFiled: November 30, 1989Date of Patent: September 29, 1992Assignee: Abbott LaboratoriesInventors: James E. Dombrowski, Phillip G. Mattingly
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Patent number: 5151527Abstract: A process is described for preparing the carbanion of the title as its sodium salt with quantitative yields and at a high level of purity, by a two-stage reaction between disodium-tetracyano-ethylene, Lewis acids and water. Metal complexes used as dyes in industrial applications are prepared from said carbanion.Type: GrantFiled: December 14, 1990Date of Patent: September 29, 1992Assignee: Consiglie Nazionale delle RicercheInventors: Alberto Flamini, Nicola Poli
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Patent number: 5137948Abstract: The invention relates to the preparation of halogenated imides derived from hydrazine and halogenated dicarboxylic acid anhydride and which can be used as flameproofing agents for plastics. The condensation of hydrazine and halogenated dicarboxylic acid anhydride is carried out in an aqueous medium, at a temperature ranging from 40.degree. to 225.degree. C., with a molar ratio of anhydride/hydrazine equal to between 0.5 and 3, preferably between 1 and 2.Type: GrantFiled: July 22, 1988Date of Patent: August 11, 1992Assignee: AtochemInventors: Evelyne Bonnet, Andre Gagnieur, Bernard Gurtner
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Patent number: 5110934Abstract: Bisphenols having a pendent imide moiety, of formula (I) ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, are selected from hydrogen, fluorine, chlorine, bromine, alkyl of 1 to 6 carbon atoms, aryl of 6 to 10 carbon atoms, alkoxy of 1 to 6 carbon atoms and aryloxy of 6 to 10 carbon atoms; R.sub.5 is selected from fluorine, chlorine, bromine and alkyl of 1 to 6 carbon atoms, and m is 0, 1, 2, 3 or 4; and R.sub.7 is alkyl of 1 to 18 carbon atoms, aryl of 6 to 10 carbon atoms, unsubstituted or substituted one or more times by a substituent selected from fluorine, chlorine, trifluoromethyl, alkyl of 1 to 6 carbon atoms, and phenyl, or heteroaryl; are useful in producing poly(imidoarylether ketone)s and poly(imidoarylether sulfone)s which are amorphous and are soluble in readily available solvents, while displaying high glass transition temperatures and good thermo-oxidative stability.Type: GrantFiled: May 23, 1991Date of Patent: May 5, 1992Inventors: Allan S. Hay, Marko Strukelj
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Patent number: 5071853Abstract: A novel series of polycyclic amines, derivatives, methods of making the compounds, novel intermediates, compositions containing them, and methods for using them in the treatment and prevention of cerebrovascular disorders are disclosed.Type: GrantFiled: February 27, 1990Date of Patent: December 10, 1991Inventors: Christopher F. Bigge, Sheryl J. Hays, Graham Johnson, Perry M. Novak, Daniel F. Ortwine
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Patent number: 5039821Abstract: Preparation of novel symmetrical and unsymmetrical chromogenic di-[bis-(indolyl)ethylenyl]tetrahalophthalides is disclosed. Specifically these compounds are chromogenic di-[bis-(indolyl)ethylenyl]tetrahalophthalides of the formula ##STR1## wherein L and X are as hereinafter defined. The process disclosed involves condensing bis(indolyl)ethylenes with tetrahalophthalic anhydride in acetic anhydride, in the presence of an electron acceptor or preferably an acetate of Group I or II of the Periodic Table. Optionally, and preferably, where unsymmetrical di-[bis-(indolyl)ethylenyl]tetrahalophthalides are desired, indoles are reacted with an acylindole in the presence of a Vilsmeier reagent to form the starting bis(indolyl)ethylene.Type: GrantFiled: August 2, 1990Date of Patent: August 13, 1991Assignee: Appleton Papers Inc.Inventor: Ponnampalam Mathiaparanam
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Patent number: 4980481Abstract: High performance composites can be made from linear or multidimensional oligomer or blends that include unsaturated hydrocarbon crosslinking functionalities linked to a pyrimidine radical on the terminal ends of the polymeric backbones of the oligomers. The oligomers are made by condensing pyrimidine-based end-cap monomers of the formula: ##STR1## wherein Z=--OH or halogen;Y= ##STR2## wherein R.sub.1 =lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof;j=0, 1, or 2;G=--CH.sub.2 --, --O--, --S--, --SO--, --CO--, --CHR--, --CR.sub.2 --, or --SO.sub.2 --;T=methallyl or allyl;Me=methyl; andR=hydrogen, lower alkyl, or phenyl,with suitable polymeric precursors.Type: GrantFiled: March 14, 1988Date of Patent: December 25, 1990Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard
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Patent number: 4956416Abstract: This invention relates to novel reactive amino or hydrazino peroxides (hereinafter generally referred to as "AHP's") and derivatives all having a Structure A:(P--R11--X--(--NH--).sub.x --R22--).sub.y --Q].sub.z Ain which the definitions of P, R11, R22, X, Q and x, y and z are given in the Summary of The Invention section, for example, 4,4-di-(t-butylperoxy)pentanohydrazide (I-1), and the use of these novel compounds in curing unsaturated polyester resins, in initiating polymerization of ethylenically unsaturated monomers, for modifying rheology, for crosslinking and curing olefin polymers and elastomers, for producing novel graft and block copolymers, and for producing novel polymers with covalently bound performance additive functions.Type: GrantFiled: August 18, 1988Date of Patent: September 11, 1990Assignee: Atochem North America, Inc.Inventor: Jose Sanchez
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Patent number: 4946873Abstract: Compound having the formula ##STR1## wherein X is the residue of a polyoxyalkylene diamine or triamine having an average equivalent weight of at least 500, after having deleted the two or three amine groups,n is two if X is a residue of a diamine and three if X is a residue of a triamine, andR is the residue of a cyclic anhydride of a polycarboxylic acid having at least four carboxyl groups, after having deleted one group ##STR2## prepolymers comprising such compounds and polyimide foams prepared from such compounds and prepolymers. The foams have good mechanical-, fire retardant- and smoke emission properties.Type: GrantFiled: February 1, 1989Date of Patent: August 7, 1990Assignee: Imperial Chemical Industries PLCInventors: Steve Carter, David Thorpe
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Patent number: 4894187Abstract: The invention relates to the preparation of halogenated imides derived from hydrazine and halogenated dicarboxylic acid anhydride and which can be used as flameproofing agents for plastics. The condensation of hydrazine and halogenated dicarboxylic acid anhydride is carried out in an aqueous medium, at a temperature ranging from 40.degree. to 225.degree. C., with a molar ratio of anhydride/hydrazine substantially equal to 2.Type: GrantFiled: February 8, 1988Date of Patent: January 16, 1990Assignee: AtochemInventors: Evelyne Bonnet, Andre Gagnieur, Bernard Gurtner
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Patent number: 4871832Abstract: The invention provides an imide compound represented by the general formula (I), ##STR1## wherein X represents a hydroxyl or amino group, Ar.sub.1 and Ar.sub.2 independently represent an aromatic residue, R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.10 alkyl group, R.sub.2 represents a hydrogen atom, a C.sub.1 -C.sub.20 alkyl or alkoxy group or a hydroxyl group, and n represents a number of from 0 to 6, and also provides an epoxy resin composition containing the imide compound (B) and epoxy resins (A) as essential components.Type: GrantFiled: January 21, 1988Date of Patent: October 3, 1989Assignee: Sumitomo Chemical Company, Ltd.Inventors: Yasuhisa Saito, Shuichi Kanagawa, Katsuya Watanabe, Kunimasa Kamio
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Patent number: 4841057Abstract: An anthraquinone compound represented by formula: ##STR1## wherein R and X are as defined in the specification, and a polarizing film containing the same. The anthraquinone compound exhibits satisfactory compatibility with organic polymers and high dichroism, and the polarizing films have excellent performance characteristics.Type: GrantFiled: January 12, 1988Date of Patent: June 20, 1989Assignee: Mitsubishi Chemical Industries LimitedInventors: Konoe Miura, Tetsuo Ozawa, Seigo Okumura, Shinji Kubo
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Patent number: 4692533Abstract: Prepare N-(amidoalkyl)imides by contacting an imide with a 2-oxazoline under reaction conditions, optionally in the presence of a solvent.Type: GrantFiled: September 9, 1985Date of Patent: September 8, 1987Assignee: The Dow Chemical CompanyInventors: Pen-Chung Wang, Steven P. Crain
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Patent number: 4681949Abstract: Novel bis-aminopyridinium salts are useful as phase transfer catalysts in the preparation of aromatic ethers by the reaction of hydroxyaromatic compound alkali metal salts (e.g., bisphenol A disodium salt) with activated halo- or nitro-substituted aromatic compounds (e.g., 4-nitro-N-methylphthalimide). The bis-aminopyridinium salts may be prepared by the reaction of aminopyridines with bis-carbonium ion-generating compounds such as dibromoalkanes.Type: GrantFiled: April 30, 1986Date of Patent: July 21, 1987Assignee: General Electric CompanyInventor: Daniel J. Brunelle
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Patent number: 4624962Abstract: Compounds of the formula I ##STR1## in which n denotes 0-3,R.sup.1 and R.sup.1' are the same or different and denote hydrogen, alkyl or alkenyl, phenyl or benzyl, each substituted as desired;R.sup.2 denotes hydrogen, alkyl or alkenyl;R.sup.3 denotes hydrogen, alkyl, hydroxyalkyl, alkoxyalkyl or aminoalkyl, alkanoylaminoalkyl, guanidinoalkyl, imidazolylalkyl, indolylalkyl, mercaptoalkyl or alkylthioalkyl, phenylalkyl, hydroxphenylalkyl, phenoxyalkyl or phenylthioalkyl, or R.sup.2 and R.sup.3, together with the C and N atoms carrying them, denote a saturated or unsaturated 4- to 8-membered monocyclic or 8- to 10-membered bicyclic isocycle or heterocycle, optionally monosubstituted or disubstituted by hydroxyl, alkoxy having 1 to 3 C atoms or alkyl,R.sup.4 denotes hydrogen, alkyl, alkenyl, alkadienyl, alkinyl, alkeninyl or alkadiinyl, cycloalkyl, phenyl, benzyl, phenethyl or phenylpropyl, each of which can be optionally monosubstituted or disubstituted;R.sup.5 denotes hydrogen or alkyl, hydroxyl or alkoxy andR.Type: GrantFiled: February 1, 1985Date of Patent: November 25, 1986Assignee: Hoechst AktiengesellschaftInventors: Rainer Henning, Hansjorg Urbach, Rolf Geiger, Volker Teetz, Bernward Scholkens
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Patent number: 4577033Abstract: Heterocyclic quaternary ammonium salts such as N,N-di-n-butylpiperidinium bromide are excellent phase transfer agents for the preparation of aromatic ethers, as by the reaction of the disodium salt of bisphenol A with 4-nitro-N-methylphthalimide.Type: GrantFiled: January 14, 1985Date of Patent: March 18, 1986Assignee: General Electric CompanyInventors: John W. Verbicky, Jr., Alice M. Colley
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Patent number: 4560768Abstract: Polyimido-ester compounds having the formula RO--C(O)--R.sub.1 --C(O)--OR are disclosed wherein R is an alkylene N-dicarboximido radical containing cycloolefinic unsaturation and R.sub.1 is the divalent residue of an unsaturated polycarboxylic acid such as fumaric, itaconic, aconitic, mesaconic, or glutaconic acid. These compounds are blended with unsaturated resins such as unsaturated polyester resin or vinyl ester resin, and polymerizable unsaturated monomers such as styrene to provide thermosettable resin compositions which can be cured to provide castings or laminates with improved resistance to thermal aging.Type: GrantFiled: December 16, 1983Date of Patent: December 24, 1985Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Douglas L. Hunter
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Patent number: 4536559Abstract: Resins are prepared from polymers that bear difunctional groups derived from compounds that are condensation products of amino-phenols and acid anhydrides. The polymers are prepared by coreacting aromatic compounds holding two hydroxyl groups, aromatic compounds holding two active halogen groups, and the condensation product of amino-phenol and acid anhydride, the condensation product holding one hydroxyl group. The resulting product has a molecular weight between about 1,000 and 40,000, preferably between about 5,000 and 30,000, and can be cross-linked to form a resin that is thermoplastic and solvent resistant.Type: GrantFiled: June 17, 1983Date of Patent: August 20, 1985Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard
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Patent number: 4515803Abstract: Compounds of the formula I ##STR1## in which n denotes 0-3,R.sup.1 and R.sup.1' are the same or different and denote hydrogen, alkyl or alkenyl, phenyl or benzyl, each substituted as desired;R.sup.2 denotes hydrogen, alkyl or alkenyl;R.sup.3 denotes hydrogen, alkyl, hydroxyalkyl, alkoxyalkyl or aminoalkyl, alkanoylaminoalkyl, guanidinoalkyl, imidazolylalkyl, indolylalkyl, mercaptoalkyl or alkylthioalkyl, phenylalkyl, hydroxyphenylalkyl, phenoxyalkyl or phenylthioalkyl, or R.sup.2 and R.sup.3, together with the C and N atoms carrying them, denote a saturated or unsaturated 4- to 8-membered monocyclic or 8- to 10-membered bicyclic isocycle or heterocycle, optionally monosubstituted or disubstituted by hydroxyl, alkoxy having 1 to 3 C atoms or alkyl,R.sup.4 denotes hydrogen, alkyl, alkenyl, alkadienyl, alkinyl, alkeninyl or alkadiinyl, cycloalkyl, phenyl, benzyl, phenethyl or phenylpropyl, each of which can be optionally monosubstituted or disubstituted;R.sup.5 denotes hydrogen or alkyl, hydroxyl or alkoxy andR.Type: GrantFiled: September 1, 1982Date of Patent: May 7, 1985Assignee: Hoechst AktiengesellschafatInventors: Rainer Henning, Hansjorg Urbach, Rolf Geiger, Volker Teetz, Bernward Scholkens
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Patent number: 4510157Abstract: Herein is disclosed compounds of the formula ##STR1## in which R.sup.1,R.sup.2,R.sup.3,R.sup.4 and R.sup.5 each is hydrogen or lower alkyl, therapeutically acceptable acid addition salts thereof, processes for their preparation, methods of using the compounds and pharmaceutical compositions. The compounds exhibit dopamine-receptor stimulating activity in a mammal and are useful for treating hyperprolactinemia, galactorrhea, amenorrhea, impotence, Parkinsonism, diabetes, acromegaly, hypertension and other central nervous system disorders.Type: GrantFiled: December 27, 1982Date of Patent: April 9, 1985Assignee: Ayerst, McKenna & Harrison, Inc.Inventors: Andre A. Asselin, Leslie G. Humber
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Patent number: 4451402Abstract: Novel, unsaturated diacteylene-terminated polyimides and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides from which they can be prepared by amidation to provide new unsaturated amide groups having a terminal group containing the structure --C.tbd.C--C.tbd.C--, hereinafter sometimes referred to as "conjugated diynes". These new compositions are more tractable than the original anhydride-terminated polyimides and can be converted at appropriate lower temperatures to crosslinked, insoluble, infusible polymers without by-product formation, thereby extending greatly the applications for which the aromatic polyimides can be employed. Moreover, these new polyimides can undergo the Diels-Alder type of addition with a large number of dienophiles. Certain monomeric materials are also described.Type: GrantFiled: March 2, 1982Date of Patent: May 29, 1984Assignee: Plastics Engineering CompanyInventors: Gaetano F. D'Alelio, deceased, Phillip A. Waitkus
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Patent number: 4423231Abstract: Novel tricyclic imidyl derivatives, for example those of the formula ##STR1## [n=1 or 2, Y=a bridge member and X=a functional group] are described. The novel tricyclic imidyl derivatives are suitable for the preparation of photocrosslinkable polymers by incorporation into existing polymer chains or by building up the polymer chain from tricyclic imidyl derivatives, according to the definition, with suitable functional groups X by polymerization or polycondensation. The photocrosslinkable polymers obtained by this means can be used, for example, to produce printing plates for the offset printing process and especially as photoresists.Type: GrantFiled: February 16, 1982Date of Patent: December 27, 1983Assignee: Ciba-Geigy CorporationInventors: Hans Zweifel, Walter Schilling, Angelo Storni, Daniel Bellus
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Patent number: 4418199Abstract: Novel tricyclic imidyl derivatives, for example those of the formula ##STR1## [n=1 or 2, Y=a bridge member and X=a functional group] are described. The novel tricyclic imidyl derivatives are suitable for the preparation of photocrosslinkable polymers by incorporation into existing polymer chains or by building up the polymer chain from tricyclic imidyl derivatives, according to the definition, with suitable functional groups X by polymerization or polycondensation. The photocrosslinkable polymers obtained by this means can be used, for example, to produce printing plates for the offset printing process and especially as photoresists.Type: GrantFiled: February 16, 1982Date of Patent: November 29, 1983Assignee: Ciba-Geigy CorporationInventors: Hans Zweifel, Walter Schilling, Angelo Storni, Daniel Bellus
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Patent number: 4418200Abstract: Novel tricyclic imidyl derivatives, for example those of the formula ##STR1## [n=1 or 2, Y=a bridge member and X=a functional group] are described. The novel tricyclic imidyl derivatives are suitable for the preparation of photocrosslinkable polymers by incorporation into existing polymer chains or by building up the polymer chain from tricyclic imidyl derivatives, according to the definition, with suitable functional groups X by polymerization or polycondensation. The photocrosslinkable polymers obtained by this means can be used, for example, to produce printing plates for the offset printing process and especially as photoresists.Type: GrantFiled: February 16, 1982Date of Patent: November 29, 1983Assignee: Ciba-Geigy CorporationInventors: Hans Zweifel, Walter Schilling, Angelo Storni, Daniel Bellus
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Patent number: 4417058Abstract: Novel tricyclic imidyl derivatives, for example those of the formula ##STR1## [n=1 or 2, Y=a bridge member and X=a functional group] are described. The novel tricyclic imidyl derivatives are suitable for the preparation of photocrosslinkable polymers by incorporation into existing polymer chains or by building up the polymer chain from tricyclic imidyl derivatives, according to the definition, with suitable functional groups X by polymerization or polycondensation. The photocrosslinkable polymers obtained by this means can be used, for example, to produce printing plates for the offset printing process and especially as photoresists.Type: GrantFiled: February 16, 1982Date of Patent: November 22, 1983Assignee: Ciba-Geigy CorporationInventors: Hans Zweifel, Walter Schilling, Angelo Storni, Daniel Bellus
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Patent number: 4414394Abstract: Novel tricyclic imidyl derivatives, for example those of the formula ##STR1## [n=1 or 2, Y=a bridge member and X=a functional group] are described. The novel tricyclic imidyl derivatives are suitable for the preparation of photocrosslinkable polymers by incorporation into existing polymer chains or by building up the polymer chain from tricyclic imidyl derivatives, according to the definition, with suitable functional groups X by polymerization or polycondensation. The photocrosslinkable polymers obtained by this means can be used, for example, to produce printing plates for the offset printing process and especially as pohtoresists.Type: GrantFiled: February 16, 1982Date of Patent: November 8, 1983Assignee: Ciba-Geigy CorporationInventors: Hans Zweifel, Walter Schilling, Angelo Storni, Daniel Bellus
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Patent number: 4404361Abstract: An additive flame retardant bisimide containing halogen atoms and ammonium acid tetrahalophthalate, e.g. N,N'-bis(2-ethylene tetrabromophthalimide) ammonium acid tetrabromophthalate. These compounds are useful in a variety of polymeric compositions and demonstrate increased thermal stability. They also foam on decomposition with the evolution of gas thus readily lending themselves to the preparation of flame retardant coatings.Type: GrantFiled: January 11, 1982Date of Patent: September 13, 1983Assignee: Saytech, Inc.Inventor: Henry J. Barda
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Patent number: 4377525Abstract: Novel, unsaturated diacetylene-terminated polyimides and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides from which they can be prepared by amidation to provide new unsaturated amide groups having a terminal group containing the structure --C.tbd.C--C.tbd.C--, hereinafter sometimes referred to as "conjugated diynes". These new compositions are more tractable than the original anhydride-terminated polyimides and can be converted at appropriate lower temperatures to crosslinked, insoluble, infusible polymers without by-product formation, thereby extending greatly the applications for which the aromatic polyimides can be employed. Moreover, these new polyimides can undergo the Diels-Alder type of addition with a large number of dienophiles. Certain monomeric materials are also described.Type: GrantFiled: March 2, 1982Date of Patent: March 22, 1983Assignee: Plastics Engineering CompanyInventors: Gaetano F. D'Alelio, deceased, Phillip A. Waitkus
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Patent number: 4377673Abstract: Novel, unsaturated diacteylene-terminated polyimides and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides from which they can be prepared by amidation to provide new unsaturated amide groups having a terminal group containing the structure --C.tbd.C--C.tbd.C--, hereinafter sometimes referred to as "conjugated diynes". These new compositions are more tractable than the original anhydride-terminated polyimides and can be converted at appropriate lower temperatures to crosslinked, insoluble, infusible polymers without by-product formation, thereby extending greatly the applications for which the aromatic polyimides can be employed. Moreover, these new polyimides can undergo the Diels-Alder type of addition with a large number of dienophiles. Certain monomeric materials are also described.Type: GrantFiled: March 2, 1982Date of Patent: March 22, 1983Assignee: Plastics Engineering CompanyInventors: Gaetano F. D'Alelio, deceased, Phillip A. Waitkus
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Patent number: 4370341Abstract: Herein is disclosed compounds of the formula ##STR1## in which R.sup.1,R.sup.2,R.sup.3,R.sup.4 and R.sup.5 each is hydrogen or lower alkyl, therapeutically acceptable acid addition salts thereof, processes for their preparation, methods of using the compounds and pharmaceutical compositions. The compounds exhibit dopamine-receptor stimulating activity in a mammal and are useful for treating hyperprolactinemia, galactorrhea, amenorrhea, impotence, Parkinsonism, diabetes, acromegaly, hypertension and other central nervous system disorders.Type: GrantFiled: December 11, 1980Date of Patent: January 25, 1983Assignee: Ayerst, McKenna & Harrison, Ltd.Inventors: Andre A. Asselin, Leslie G. Humber
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Patent number: 4337200Abstract: Novel tricyclic imidyl derivatives, for example those of the formula ##STR1## [n=1 or 2, Y=a bridge member and X=a functional group] are described. The novel tricyclic imidyl derivatives are suitable for the preparation of photocrosslinkable polymers by incorporation into existing polymer chains or by building up the polymer chain from tricyclic imidyl derivatives, according to the definition, with suitable functional groups X by polymerization or polycondensation. The photocrosslinkable polymers obtained by this means can be used, for example, to produce printing plates for the offset printing process and especially as photoresists.Type: GrantFiled: September 4, 1980Date of Patent: June 29, 1982Assignee: Ciba-Geigy CorporationInventors: Hans Zweifel, Walter Schilling, Angelo Storni, Daniel Bellus