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Ram B Gupta, Hargurpreet Singh, Russell C Cappadona, Mark Paterna, Al Wagner: Non-yellowing ortho-dialkyl aryl substituted triazine ultraviolet light absorbers. Cytec Technology, James A Jubinsky, Fran Wasserman, Claire M Schultz, March 15, 2005: US06867250 (24 worldwide citation)

The invention relates generally to pyrimidines and triazines ultraviolet light absorbers containing a phenolic aromatic group(s) and a non-phenolic aromatic group(s) and the use thereof to protect against degradation by environmental forces, inclusive of ultraviolet light, actinic radiation, oxidati ...


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Ram B Gupta, Dennis J Jakiela, Sampath Venimadhavan, Russell C Cappadona, Venkatrao K Pai: Process for making triazine UV absorbers using Lewis acids and reaction promoters. Cytec Technology, James A Jubinsky, Fran Wasserman, Claire M Schultz, November 26, 2002: US06486316 (4 worldwide citation)

It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at l ...


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Ram B Gupta, Dennis J Jakiela, Sampath Venimadhavan, Russell C Cappadona, Venkatrao K Pai: Process for making 2-(2-hydroxy-4-alkoxyphenyl)-4,6-bisaryl-1,3,5-triazines. Cytec Technology, Pennie & Edmonds, October 2, 2001: US06297378 (2 worldwide citation)

The invention relates to a novel process for making 2-(2-hydroxy-4-alkoxyphenyl)-4,6-bisaryl-1,3,5-triazine and 2-(2,4-dialkoxyphenyl)-4,6-bisaryl-1,3,5-triazine compounds directly from 2-chloro-4,6-bisaryl-1,3,5-triazine compounds with 3-alkoxyphenol, 1,3-dialkoxylbenzene compounds or mixtures ther ...


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Ram B Gupta, Dennis J Jakiela, Sampath Venimadhavan, Russell C Cappadona, Venkatrao K Pai: Process for making triazine UV absorbers using lewis acids and reaction promoters. Cytec Technology, Fran Wasserman, Claire M Schultz, May 31, 2005: US06900314 (1 worldwide citation)

It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at l ...


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Ram Baboo Gupta, Hargurpreet Singh, Russell C Cappadona: Phenyl ether-substituted hydroxyphenyl triazine ultraviolet light absorbers. Cytec Technology, James A Jubinsky, Fran Wasserman, Claire M Schultz, February 15, 2005: US06855269

This invention relates generally to phenyl ether substituted triazines compounds and compositions containing same and their use to protect against degradation by environmental forces. A method for stabilizing a material by incorporating such triazines is also disclosed.


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Ram B Gupta, Dennis J Jakiela, Sampath Venimadhavan, Russell C Cappadona, Venkatrao K Pai: Process for making triazine UV absorbers using lewis acids and reaction promoters. Cytec Technology, James A Jubinsky, Claire M Schultz, Fran Wasserman, May 4, 2004: US06730785

It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at l ...


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Ram B Gupta, Dennis J Jakiela, Sampath Venimadhavan, Russell C Cappadona, Venkatrao K Pai: Process for making triazine UV absorbers using Lewis acids and reaction promoters. Cytec Technology, James A Jubinsky, Fran Wasserman, Claire M Schultz, March 23, 2004: US06710177

It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at l ...


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Ram B Gupta, Dennis J Jakiela, Sampath Venimadhavan, Russell C Cappadona, Venkatrao K Pai: Process for making 2-hydroxy-4-alkoxyphenyl or 2,4-dihydroxyphenyl substituted 1,3,5-triazine UV absorbers. Ciba Specialty Chemicals Corporation, Tyler A Stevenson, November 26, 2002: US06486317

The invention provides new processes for preparing compositions containing at least one triazine compound, including new compounds for use in these processes to form the compositions and the new compositions that are formed.


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Ram Baboo Gupta, Hargurpreet Singh, Russell C Cappadona: Red-shifted triazine ultravioletlight absorbers. Cytec Technology, James A Jubinsky, Claire M Schultz, Fran S Wasserman, October 5, 2004: US06800757

The present invention relates to novel red-shifted UV absorbers comprising 1,3,5-triazine structures containing a 2-naphthol-derived substituent. The present invention also relates to a method for stabilizing a material by incorporating into such material, e.g., organic material, the novel red-shift ...