Reference

Anti-oxidation and corrosion inhibitors for boron-containing lubricants

Anti-oxidation and corrosion inhibitors for boron-containing lubricants.Some chemicals with cas registry numbers like 89233-57-8 and 21015-74-7 are also used. Holstedt, Richard A.; Jessup, Peter (Union Oil Co. of California , USA). U.S. US 4427560 A 24 Jan 1984, 12 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C10M001-38. NCL: 252042700. APPLICATION: US 81-329384 10 Dec 1981. DOCUMENT TYPE: Patent CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Lubricating oil compns. are described that contain hydrocarbon polysulfide derivs. of 2,5-dimercapto-1,3,4-thiadiazole (as Cu corrosion inhibitors), bis(dithiobenzil) metal derivs. (as antioxidants), terephthalic acid (I) [100-21-0] as a Pb corrosion inhibitor, and B compds. as antiwear-extreme pressure additives. Thus, SAE 30 motor oil (used in the CRC L-30 engine test for 40 h operation), contg. 2,2-dodecyliminobis(2-phenylethyl)hydrogen borate [89188-31-8] 2.00, Amoco 150 [19878-61-6] 0.075, I 0.05, bis(dithiobenzil) Fe [22597-51-9] 0.05, P 0.05, and Amoco PCO-059 [89234-34-4], detergent 6.5 produced 34.8 mg bearing wt. loss vs. 93 mg when the same compn. did not contain antioxidants and corrosion inhibitors for Cu and Pb. .

P-(Hydroxymethyl)benzoic acid copolyesters

P-(Hydroxymethyl)benzoic acid copolyesters. Paschke, Edward E.; Donohue, John A. (Standard Oil Co. (Indiana) , USA). U.S. US 4431797 A 14 Feb 1984, 6 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08G063-06; C25B003-04. NCL: 528361000. APPLICATION: US 82-445434 30 Nov 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 25 An electrochem. process for the prepn. of polyesters from p-(hydroxymethyl)benzoic acid(I) consists of the electrochem. redn. in aq. soln. of terephthalic acid (II) [100-21-0] to ammonium p-(hydroxymethyl)benzoate (III) [89837-70-7], hydrogenation of the aq. soln. to remove 4-carboxybenzaldehyde (IV) [619-66-9], removal of the water, decompn. of III to give I at 150-190°, and polymn. of I in presence of a glycol and a catalyst to give a copolymer having inherent viscosity 30.5 dL/g. Thus, II was reduced to I with an 87% yield and a 92% conversion with current efficiency 72% over a 13.75 h. Used were max. c.d. 75 amp/dm2, 4.8 faraday/mol II in a 2-compartment electrolysis cell having an amalgamated Pb cathode, a sulfonated fluorocarbon polymer membrane, and a Pt-coated Ti anode. An ammonium soln. (530. 89871-44-3 and 89837-70-7 are also in the experiment.3 mL) of III with pH 10.5 and concn. 0.33 g/mL contg. 0.54% II, 0.051% IV, and 0.01% p-toluic acid was treated with 0.66 g ethylene glycol and 0.10 g butylstannoic anhydride catalyst and heated 172 min at 107-250° to remove water and NH3. The pressure was reduced to 1.25 torr and the temp. was increased to 265° over the next 27 min. Polymn. was continued 170 min at 265°/0.32-1.20 torr to give ethylene glycol-p-hydroxylmethylbenzoic acid-terephthalic acid copolymer [89871-44-3] with inherent viscosity 0.58 dL/g. .