Reference

Vinyl chloride resin compositions and stretch films for food packaging

Vinyl chloride resin compositions and stretch films for food packaging. (Mitsui Toatsu Chemicals, Inc., Japan). Jpn. Kokai Tokkyo Koho JP 58093746 A2 3 Jun 1983 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L027-06; B65D065-02; C08K005-11. APPLICATION: JP 81-190533 30 Nov 1981. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Packaging films having low film unrolling stress are prepd. from PVC [9002-86-2] 100, 31 ester selected from diisononyl adipate (I) [33703-08-1], di-n-alkyl (C6,8,10) adipate, dialkyl (C7,9, or with side chains) adipate, and bis(2-ethylhexyl) azelate [103-24-2] >21, and di-Bu sebacate (II) [109-43-3] and/or acetyl tri-Bu citrate [77-90-7] 2-12 parts. Thus, a film prepd. from Vinikulon 4000 M (PVC) 100, I 33, II 2, epoxidized soybean oil 15, Ca-Zn stabilizer 1.0, diglycerin surfactant 1.8, and ethoxylated higher alc. surfactant 0.6 part had rolled film release stress 400 g, compared with 550 g for using 33 parts dioctyl adipate as plasticizer.

Composition with controlled active agent release

Composition with controlled active agent release. Bogentoft, Conny Borje; Appelgren, Curt Henry (Aktiebolag Hassle, Swed.). Ger. Offen. DE 2651176 18 May 1977, 18 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: A61K009-22. PRIORITY: SE 75-12883 17 Nov 1975. DOCUMENT TYPE: Patent CA Section: 63 (Pharmaceuticals) Coating materials for timed-release pharmaceutical tablets and granules contain a lipophilic compd., H2O sol. polymers, such as poly(vinyl acetate), derivs. of acrylic or methacrylic acids, and cellulose derivs. For example, sugar granules (0.5-0.7 mm diam.,) were sprayed first with 250 g alprenolol-HCl, dissolved in a CH2Cl2/MeOH then with a 2nd soln. contg. 160 g cetanol [36653-82-4] and 40 g alprenolol-HCl. The granules were coated with a final film layer comprising 50 g Etocel N-10 (ethyl cellulose) [9004-57-3] and 10 g Citroflex [77-90-7] (acetyl tributyl citrate). The diam. after the first coating was 0.75-1.00 mm, and the rate of release of the active ingredient was 6.3%/h.