Patents Assigned to Ciga-Geigy Corporation
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Patent number: 5262501Abstract: Mixtures essentially comprising compounds of formula I or II ##STR1## wherein X is a hydrogen atom or vinyl, A is a divalent aromatic radical which is unsubstituted or substituted by one or more C.sub.1 -C.sub.20 alkyl groups, halogen atoms or halogen-substituted C.sub.1 -C.sub.20 alkyl groups, R.sub.1, R.sub.1 ', R.sub.2, R.sub.2 ', R.sub.3 and R.sub.3 ' are each a hydrogen atom, or R.sub.1 and R.sub.1 ', R.sub.2 and R.sub.2 ' and R.sub.3 and R.sub.3 ' are each together ethylene, R.sub.4 is C.sub.1 -C.sub.6 alkyl, phenylalkyl containing 1 to 6 carbon atoms in the alkyl moiety or is trialkylsilyl containing 1 to 6 carbon atoms in each alkyl moiety, m is 0, 1 or 2, n is 0 or an average number from 1 to 200, p is an average number from 1 to 100 and q is 0 or an average number from 1 to 100, can be cured by heating and are suitable for making laminates, especially for fabricating copper-clad circuit boards.Type: GrantFiled: May 12, 1992Date of Patent: November 16, 1993Assignee: Ciga-Geigy CorporationInventors: Sheik Abdul-Cader Zahir, Cecile Pasquier, Wolfgang Scharf, Maurice Dupre
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Patent number: 4957946Abstract: The invention relates to mixtures containing:(a) cationically polymerizable compound and(b) a compound of the formula I[R.sup.1 (FE.sup.II R.sup.2).sub.a ].sub.q.sup..sym.an an X.sup..crclbar.(I)in which a is 1 or 2, n is 1 or 2, R.sup.1 is a substituted or unsubstituted .pi.-arene, R.sup.2 is a substituted or unsubstituted .pi.-arene or cyclopentadienyl anion or indenyl anion, q is an integer from 1 to 3 and X is FSO.sub.3.sup.- or a q-valent anion of an organic sulfonic acid or of a carobxylic acid; R.sup.1 can also be a polymeric, aromatic ligand. The invention also relates to the novel compounds of the formula I. The curable mixtures can be processed in particular for the production of coatings having a good resistance to heat.Type: GrantFiled: June 3, 1988Date of Patent: September 18, 1990Assignee: Ciga-Geigy CorporationInventors: Kurt Meier, Roger P. Salvin
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Patent number: 4857606Abstract: Contact lenses which are optically clear, wettable, flexible, of high oxygen permeability and substantially non-swellable in the aqueous ocular environment of use, of a polymer containing polyoxyalkylene backbone units are disclosed, as well as the preparation thereof and methods of treating vision defects therewith.Type: GrantFiled: July 21, 1988Date of Patent: August 15, 1989Assignee: Ciga-Geigy CorporationInventors: Kai C. Su, Frank F. Molock
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Patent number: 4847017Abstract: New compounds have the formula I: ##STR1## wherein R is a C.sub.1 -C.sub.12 straight or branched chain alkyl residue, a C.sub.2 -C.sub.12 straight or branched chain alkenyl residue, a C.sub.5 -C.sub.12 cycloalkyl residue, a C.sub.6 -C.sub.10 aryl residue or a C.sub.7 -C.sub.12 aralkyl residue; and X is a C.sub.1 -C.sub.10 straight or branched alkylene residue, a C.sub.2 -C.sub.10 straight or branched chain alkenylene residue or a C.sub.6 -C.sub.10 arylene residue; as well as derivatives of the compounds of formula I; and enantiomers, racemic mixtures, and mixtures of diastereomers.The new compounds are useful e.g. as corrosion inhibitors in aqueous systems.Type: GrantFiled: June 29, 1987Date of Patent: July 11, 1989Assignee: Ciga-Geigy CorporationInventors: Brian G. Clubley, David W. Cartmell, David C. Parker
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Patent number: 4639264Abstract: N-Arylsulfonyl-N'-(4-mercaptomethyl-pyrimidinyl- and -triazinyl)-ureas of the formula ##STR1## (symbols in this formula defined below) and the salts of these compounds with amines, alkali metal bases or alkaline-earth metal bases or with ammonium bases, have good pre- and post-emergence-selective, herbicidal and growth-regulating properties.Type: GrantFiled: August 15, 1984Date of Patent: January 27, 1987Assignee: Ciga-Geigy CorporationInventor: Werner Topfl
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Patent number: 4554367Abstract: Phosphonium stannates of the formula I[(R.sup.1).sub.a (R.sup.2).sub.b P].sub.n.sup..sym. [R.sub.q.sup.3 SnX.sub.r Y.sub.t ].sub.w.sup.n.crclbar. (I),in which the symbols R.sup.1, R.sup.2, R.sup.3, X, Y, a, b, n, q, r, t and w are as defined in the description, are active biocides. They can be used both in the preservation of materials and for protecting crop plants. Their water-solubility and their low volatility are particularly valuable properties.Type: GrantFiled: September 26, 1983Date of Patent: November 19, 1985Assignee: Ciga-Geigy CorporationInventors: Wolfgang Wehner, Reinhardt Grade
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Patent number: 4486424Abstract: Triorganotin hydantoin compounds of the formula ##STR1## wherein R is C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, phenyl or ##STR2## R.sub.1 and R.sub.2 are each hydrogen, C.sub.1 -C.sub.8 -alkyl, phenyl, hydroxyphenyl, or together they are C.sub.5 -C.sub.7 -alkylene or oxygen,X is oxygen or sulfur, andY is hydrogen or --Sn--(R).sub.3, as well as a process for producing these compounds, and the use thereof for combating pests are described.Type: GrantFiled: October 4, 1982Date of Patent: December 4, 1984Assignee: Ciga-Geigy CorporationInventors: Wolfgang Wehner, Peter Ackermann
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Patent number: 4424284Abstract: A cationic adsorption agent which is obtained by reaction of(a) an amino compound which contains at least one amino group and at least one free or methylolated carbamide or thiocarbamide group, or a salt thereof,with(b) an aminoplast precondensate which does not contain amino groups.The novel absorption agent is suitable in particular for removing anionic substances, such as acid dyes or reactive dyes, from aqueous solutions, especially from wastewaters.Type: GrantFiled: October 19, 1981Date of Patent: January 3, 1984Assignee: Ciga-Geigy CorporationInventors: Jaroslav Haase, Roger Palmberg
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Patent number: 4034019Abstract: Linear, thermoplastic copolyesters based on terephthalic acid and/or isophthalic, s-triazinedicarboxylic acid derivative, alkanediols and/or N-heterocyclic diols. The copolyesters are thermoplastics materials from which moulded materials having valuable thermo-mechanical properties can be manufactured by the customary shaping processes such as casting, injection moulding and extrusion. They are suitable for use as engineering plastic materials and for coating objects.Type: GrantFiled: July 21, 1975Date of Patent: July 5, 1977Assignee: Ciga-Geigy CorporationInventor: Jurgen Habermeier