Reference

Multilayer surgical goods

Multilayer surgical goods. Kuehlein, Georg; Gerlach, Ernst (Rehau Plastiks A.-G. und Co., Fed. Rep. Ger.). Ger. Offen. DE 3204762 A1 25 Aug 1983, 19 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: A61M025-00; A61M005-14; A61J001-00; B32B027-08. APPLICATION: DE 82-3204762 11 Feb 1982. DOCUMENT TYPE: Patent CA Section: 63 (Pharmaceuticals) Bags, tubings, and containers, etc. have one wall contg. a plasticized biocompatible material and another wall contg. a questionable or physiol. undesirable material, which is kept from migrating to the biocompatible surface by a plasticizer concn. gradient. With PVC [9002-86-2] as the biocompatible layer, its plasticizer content is 37%. The questionable material in the outer layer may be a light or x-ray absorber. A laminated tubing with an inner diam. of 4.5 mm and 1.35 mm walls had a 0.7 mm outer layer of PVC 100, plasticizer 16, Ca-Zn stabilizer 2, epoxidized soybean oil 5, Euvenyl Blue [88232-39-7] 0.06, and Cyasorb UV 24 [131-53-3] 0.2 parts. The last 2 compds. absorbed all the light between 220 and 376 nm, but their physiol.In this experiment, several chemicals are used like 88232-39-7 and 9002-86-2 effects are questionable. A 0.65 mm inner layer contained PVC 100, plasticizer 50, Ca-Zn stabilizer 2, and epoxidized soybean oil 5 parts. The Euvenyl Blue can be replaced by dyes to change the light-absorbing wavelength. X-ray contrast media can be added to the inner layer of such tubings. .

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. .