Detail of "6768-23-6"

Reference

Piperidine derivatives

Piperidine derivatives. Avar, Lajos (Sandoz-Patent-G.m.b.H., Fed. Rep. Ger.). Ger. Offen. DE 3412227 A1 11 Oct 1984, 14 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07D211-46; C08K005-34. APPLICATION: DE 84-3412227 2 Apr 1984. PRIORITY: DE 83-3312912 11 Apr 1983. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 27, 37 2,6-Dialkyl-2,6-dimethyl-4-piperidyl esters of arylenedimethylene or (preferably) arylmethylenemalonic acids are heat and light stabilizers for plastics, esp. for automotive lacquers. Thus, stirring 4.4 g p-MeOC6H4CH:C(CO2Et)2 [6768-23-6], 6.3 g 2,2,6,6-tetramethyl-4-piperindinol, 0.12 g Na in 8 mL EtOH, and 40 mL xylene at 124-130° for 2 h with distn. of alc. gave a dipiperidyl ester [94274-03-0] as a yellow resin. A coating contg. 50% acrylic resin (Viacryl SC 344) 80, 72% melamine resin (Maprenal MF 80) 13.9, flow modifier 4.1, and the above ester 2 parts, sprayed on a substrate and baked 30 min at 140°, had good resistance to UV light and weathering.

Dialkyl malonates as suncreen adjuvants

Dialkyl malonates as suncreen adjuvants. Conner, Donald E.; Cumpelik, Boris M. (Van Dyk and Co., Inc., USA).Chemicals with cas numbers 65828-72-0 and 6768-23-6 also play role. Eur. Pat. Appl. EP 100651 A1 15 Feb 1984, 14 pp. DESIGNATED STATES: R: DE, FR, GB, IT. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: A61K007-42; C07C069-708; C07C069-618. APPLICATION: EP 83-304351 27 Jul 1983. PRIORITY: US 82-404964 3 Aug 1982; EP 82-305565 19 Oct 1982. DOCUMENT TYPE: Patent CA Section: 62 (Essential Oils and Cosmetics) Compns. contg. an org. sunscreen and substituted dialkyl malonates R1(CH:CR2)nCH:(CO2R)2, where R = alkyl, R1 = arom. or heterocyclic group, R2 = H or alkyl, such as cinnamal di-Et malonate (I) [25364-76-5] are effective in providing broad spectrum sunscreen protection. A mixt. of 35% 2,2-dihydroxy-4-methoxybenzophenone [131-53-3] and 65% I produced a total block when used in an otherwise conventional formulation based on a cosmetic oil carrier at a concn. of 5-10% in the final compn. .