Patents Assigned to Fairmount Chemical Company, Inc.
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Patent number: 5466819Abstract: Provided are ultraviolet stabilizers which are diphenylmethane compounds of the formula: ##STR1## wherein: R.sub.1 and R.sub.2 are independently C.sub.1 to C.sub.8 alkyl, cyclopentyl, cyclohexyl or cumyl; and X is selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.12 alkyl and C.sub.1 to C.sub.12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.Type: GrantFiled: July 6, 1994Date of Patent: November 14, 1995Assignee: Fairmount Chemical Company, Inc.Inventors: William E. Leistner, Semyon Moshchitsky
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Patent number: 5373037Abstract: Provided are ultraviolet stabilizers which are diphenylmethane compounds of the formula: ##STR1## wherein: R.sub.1 and R.sub.2 are independently C.sub.1 to C.sub.8 alkyl, cyclopentyl, cyclohexyl or cumyl; and X is selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.12 alkyl and C.sub.1 to C.sub.12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.Type: GrantFiled: May 19, 1994Date of Patent: December 13, 1994Assignee: Fairmount Chemical Company, Inc.Inventors: William E. Leistner, Semyon Moshchitsky
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Patent number: 5362881Abstract: Provided are ultraviolet stabilizers which are diphenylmethane compounds of the formula: ##STR1## wherein: R.sub.1 and R.sub.2 are independently C.sub.1 to C.sub.8 alkyl, cyclopentyl, cyclohexyl or cumyl; and X is selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.12 alkyl and C.sub.1 to C.sub.12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.Type: GrantFiled: May 27, 1993Date of Patent: November 8, 1994Assignee: Fairmount Chemical Company, Inc.Inventors: William E. Leistner, Semyon Moshchitsky
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Patent number: 5360850Abstract: Provided are asymmetrical, ultraviolet stabilizers which are hydroxyphenyl benzotriazolylphenol compounds of the formula: ##STR1## wherein: R.sub.1 is C.sub.1 to C.sub.18 alkyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.16 arylalkyl, C.sub.1 to C.sub.12 alkoxy, C.sub.6 to C.sub.10 aryloxy, C.sub.7 to C.sub.16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl;R.sub.2 is C.sub.1 to C.sub.18 alkyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.16 arylalkyl, C.sub.1 to C.sub.12 alkoxy, C.sub.6 to C.sub.10 aryloxy, C.sub.7 to C.sub.16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl;R.sub.1 is different from R.sub.2 ; andX is selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.12 alkyl, and C.sub.1 to C.sub.12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.Type: GrantFiled: November 30, 1993Date of Patent: November 1, 1994Assignee: Fairmount Chemical Company, Inc.Inventors: Semyon Moshchitsky, William E. Leistner
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Patent number: 5292890Abstract: Provided are asymmetrical, ultraviolet stabilizers which are hydroxyphenyl benzotriazolylphenol compounds of the formula: ##STR1## wherein: R.sub.1 is C.sub.1 to C.sub.18 alkyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.16 arylalkyl, C.sub.1 to C.sub.12 alkoxy, C.sub.6 to C.sub.10 aryloxy, C.sub.7 to C.sub.16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl;R.sub.2 is C.sub.1 to C.sub.18 alkyl, C.sub.6 to C.sub.10 aryl, C.sub.7 to C.sub.16 arylalkyl, C.sub.1 to C.sub.12 alkoxy, C.sub.6 to C.sub.10 aryloxy, C.sub.7 to C.sub.16 arylalkoxy, cyclopentyl, cyclohexyl or cumyl;R.sub.1 is different from R.sub.2 ; andX is selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.12 alkyl, and C.sub.1 to C.sub.12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.Type: GrantFiled: May 5, 1993Date of Patent: March 8, 1994Assignee: Fairmount Chemical Company, Inc.Inventors: Semyon Moshchitsky, William E. Leistner
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Patent number: 5237071Abstract: A method for preparing 2,2'-methylene-bis-[6-(2H)-benzotriazol-2-yl)-4-hydrocarbyl phenols] is disclosed. According to the process(i) formaldehyde, a dialkylamine and a 4-hydrocarbyl-6-benzotriazolyl phenol as monomer are mixed;(ii) the mixture is heated to a temperature high enough to remove the water produced by the reaction of the mixture;(iii) thereafter an alkaline catalyst is added with heating for several hours;(iv) the phenol compound precipitates when the reaction mixture is neutralized and solvent for the salt product of the neutralization reaction is added in an amount sufficient to permit stirring.The solid product produced is 2,2'-methylene-bis-[6-(2H-benzotriazol-2-yl)-4-hydrocarbyl phenol] having the formula I: ##STR1## in which each R group is an alkyl group of one to twelve carbons or a cycloalkyl group of five to eight carbons and X is chloro or hydrogen.Type: GrantFiled: January 22, 1991Date of Patent: August 17, 1993Assignee: Fairmount Chemical Company, Inc.Inventors: William E. Leistner, Semyon Moshchitsky, Mahmut Levent
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Patent number: 4777111Abstract: This invention relates to a composition and method for enhancing the contrast of images of an underlying photolithographic layer. A photographic element, including a photoresist layer, is applied to a substrate. The photoresist layer contains a contrast-enhancing layer including at least one light-sensitive compound capable of producing acidic photoproducts upon exposure to actinic radiation, at least one indicator dye that changes color on exposure to acidic conditions and at least one polymeric binder soluble in water or weakly alkaline aqueous solutions. The photographic element is exposed to active radiation sufficient to cause photobleaching of the contrast enhancement layer and exposure of the photoresist layer. The photographic element is exposed to actinic radiation sufficient to cause photobleaching of the contrast enhancement layer and exposure of the photoresist layer.Type: GrantFiled: March 23, 1987Date of Patent: October 11, 1988Assignee: Fairmount Chemical Company, Inc.Inventors: David B. Blumel, Albert S. Deutsch
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Patent number: 4077796Abstract: This invention pertains to a method for controlling the growth of axillary buds or suckers in tobacco plants by application of a homogenized liquid mixture of a saturated fatty alcohol selected from the group consisting of C.sub.6 to C.sub.18 saturated fatty alcohols and a salt of 1,2 dihydropyridazine 3,6 dione to the tobacco plant after the tobacco flower has been removed.Type: GrantFiled: November 24, 1976Date of Patent: March 7, 1978Assignee: Fairmount Chemical Company, Inc.Inventor: Calman J. Kish
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Patent number: RE30216Abstract: This invention pertains to a method for controlling the growth of axillary buds or suckers in tobacco plants by application of a homogenized liquid mixture of a saturated fatty alcohol selected from the group consisting of C.sub.6 to C.sub.18 saturated fatty alcohols and a salt of 1,2-dihydro-pyridazine, 3,6-dione to the tobacco plant after the tobacco flower has been removed.Type: GrantFiled: July 12, 1978Date of Patent: February 19, 1980Assignee: Fairmount Chemical Company, Inc.Inventor: Calman J. Kish