Reference

Phenolic phosphite antioxidant for polymers

Phenolic phosphite antioxidant for polymers. Burton, Lester P. J. (Ethyl Corp., USA). U.S. US 4474917 A 2 Oct 1984, 8 pp. Cont.-in-part of U.S. Ser. No. 350,085. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C07F009-145; C07F009-146. NCL: 524152000. APPLICATION: US 82-382629 27 May 1982. PRIORITY: US 82-350085 18 Feb 1982. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Phenolic-phosphite antioxidants for use in polyolefins alone or in compns. contg. synergists are provided. Thus, the Na salt of 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene was prepd. and reacted with PCl3 to give the adduct antioxidant. The antioxidant (0.02 g) and 0.05 g distearyl thiodipropionate [693-36-7] were dissolved in CH2Cl2 and blended with 20 g polypropylene [9003-07-0]. 693-36-7 is the cas registry number. This chemical is also mentioned in this article. Plaques formed of the compn. were placed in an air circulating oven set at 150°. Time to failure was 2712 h. .

Optimum mixtures of stabilizers for polypropylene monofilaments and films

Optimum mixtures of stabilizers for polypropylene monofilaments and films. Kolomytsyn, V. P.; Efimov, A. A.; Popova, Z. G.; Ivanenko, P. F.; Zverev, M. P. (USSR). Khim. Volokna, (5), 10-12 (Russian) 1984. CODEN: KVLKA4. ISSN: 0023-1118. DOCUMENT TYPE: Journal CA Section: 40 (Textiles) Section cross-reference(s): 37, 38 Stabilizing compns. for isotactic polypropylene (I) [25085-53-4] and polypropene fibers, which contain a light stabilizer and a phenolic antioxidant in addn. to a sterically hindered amine antioxidant, showed a decreased effectiveness due to incompatibility of the 2 types of antioxidants. The stabilizing effectiveness of these compns. can be affected significantly by optimizing the amts. of individual compds. in them. Tinuvin 327 [3864-99-1], Cyasorb UV-531 [1843-05-6] and Irganox 1010 [6683-19-8] can be substituted by Diacetam 5 (II) [76505-58-3], Fenozan 23 (III) [67894-72-8], Fenozan 28 [38879-22-0], and Benzon OA [37330-26-0]. The best stabilizing effect on products from I had a stabilizing compn. contg. II 0.2, III 0.1, Fosfit NF [26523-78-4] 0.2, and DSTDP [693-36-7] 0.2%.