Reference

Methacrylamides

Methacrylamides. Spoerke, Roger W. (Goodyear Tire and Rubber Co., USA). U.S. US 4022831 10 May 1977, 5 pp. Division of U.S. 3,945,970. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C07C103-44. NCL: 260562000R. APPLICATION: US 74-484051 28 Jun 1974. DOCUMENT TYPE: Patent CA Section: 38 (Elastomers, Including Natural Rubber) Section cross-reference(s): 23 Methacrylamides, useful as comonomer antioxidants in the manuf. of rubbers, are prepd. from primary amines and methacrylic esters using basic catalysts such as alkoxides and amides. Thus, N-(4-anilinophenyl)methacrylamide [41543-92-4] was prepd. by the reaction of p-aminodiphenylamine [101-54-2] with Me methacrylate [80-62-6] in the presence of NaOMe and was polymd. with acrylonitrile and butadiene to yield an elastomeric copolymer [43063-09-8] contg. 0.97 part amide and having 1% 100.degree. O absorption 487 h.

Preparation of rubbers having polymer-bound antidegradants

Preparation of rubbers having polymer-bound antidegradants. Schulz, Gerald O.; Parker, Dane K. (Goodyear Tire and Rubber Co., USA). U.S. US 5073592 A 17 Dec 1991, 8 pp. (United States of America). CODEN: USXXAM. CLASS: ICM: C08K005-36. NCL: 524750000. APPLICATION: US 90-562052 2 Aug 1990. DOCUMENT TYPE: Patent CA Section: 39 (Synthetic Elastomers and Natural Rubber) Rubbers contg. polymer-bound antidegradants are prepd.Several reagents with their cas registry numbers 43063-09-8 and 139681-10-0 are used here. by aq. emulsion copolymn. of 31 functionalized monomer contg. an antidegradant moiety and a polymerizable vinyl group with ￡1 copolymerizable conjugated diene monomer in the presence of 1-70 parts S-contg. ester based on 100 wt. parts of total monomers. The ester functions as a synergist for the antidegradant, as a cosolvent-dispersant for the antidegradant during polymn., and as a plasticizer for the final rubber product. Thus, butadiene 77.0, vinylidene chloride 5.0, N-(4-analinophenyl)methacrylamide 25, and a mixt. of 70-85 wt.% 3,6,9-trioxaundecane-1,11-bis(3-dodecylthiopropionate) and 30-15 wt.% 1-(3-dodecylthiopropionate)-3,6,9-trioxaundecanol 25.0 parts were copolymd. in an aq. soln. contg. Na2SO4, KOH, Na dodecylbenzenesulfonate, AIBN, and tert-dodecyl mercaptan at 54° for 18 h to give rubber contg. bound antioxidant. .