Search

CN-117720958-B - Stain-resistant rust-preventive oil complexing agent composition and preparation method thereof

CN117720958BCN 117720958 BCN117720958 BCN 117720958BCN-117720958-B

Abstract

The invention discloses a stain-resistant rust-preventive oil complexing agent composition and a preparation method thereof, wherein the stain-resistant rust-preventive oil complexing agent composition comprises, by mass, 5-40% of a composite calcium acid rust inhibitor, 20-70% of a barium sulfonate rust inhibitor, 5-20% of an organic carboxylic acid rust inhibitor, 5-20% of a film forming agent, 0.1-3% of a nonferrous metal corrosion inhibitor, 0.3-1.0% of an antioxidant, 5-15% of a cosolvent and 5-15% of base oil. The stain-resistant rust-preventive oil complexing agent composition provided by the invention has excellent stain resistance while maintaining salt spray resistance and moisture resistance.

Inventors

  • ZHANG XUETAO
  • ZHANG MENGJIA
  • MIAO XINFENG
  • ZENG KAI

Assignees

  • 中国石油天然气股份有限公司

Dates

Publication Date
20260508
Application Date
20220909

Claims (9)

  1. 1. The stain-resistant rust-preventive oil complexing agent composition is characterized by comprising the following components in percentage by mass: 5-40% of a composite acid calcium antirust agent; 20-70% of barium sulfonate antirust agent; 5-20% of organic carboxylic acid antirust agent; 5-20% of a film forming agent; 0.1-3% of nonferrous metal corrosion inhibitor; 0.3-1.0% of antioxidant; 5-15% of cosolvent; 5-15% of base oil; The structural formula of the composite acid calcium rust inhibitor is [ (DNNSA) x (FA) y (PIBSA) z ] 2 .Ca, wherein DNNSA is dinonyl naphthalene sulfonic acid, FA is monobasic fatty acid, PIBSA is polyisobutylene succinic anhydride, x+y+z=1, x=0.5-0.9, y=0-0.5, and z=0-0.5; The FA is one or the combination of more than two of caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid and oleic acid according to any proportion; The PIBSA is an additive intermediate prepared by reacting high-activity polyisobutene with a molecular weight of 1000 or 1300 with maleic anhydride; the barium sulfonate antirust agent is at least one of barium petroleum sulfonate, neutral barium dinonyl naphthalene sulfonate and alkaline barium dinonyl naphthalene sulfonate; The organic carboxylic acid antirust agent is at least one of dodecenyl succinic acid, dodecenyl succinic acid half ester and N-oleoyl sarcosine.
  2. 2. The stain-resistant rust-preventive oil complexing agent composition as claimed in claim 1, wherein the stain-resistant rust-preventive oil complexing agent composition comprises the following components in percentage by mass: 7-35% of a composite acid calcium antirust agent; 25-65% of barium sulfonate antirust agent; 7-15% of organic carboxylic acid antirust agent; 7-15% of a film forming agent; 0.3-2.5% of nonferrous metal corrosion inhibitor; 0.5-0.8% of antioxidant; 7-12% of cosolvent; 7-12% of base oil; The sum of the mass percentages of the components is 100 percent.
  3. 3. The stain and rust resistant oil complexing agent composition of claim 1 wherein said film forming agent is at least one of petrolatum, paraffin wax, oxidized paraffin wax, oil soluble asphalt, ethylene propylene copolymer, methacrylate copolymer, polyisobutylene, hydrogenated styrene diene copolymer, lanolin and lanolin soap.
  4. 4. The stain and rust resistant oil complexing agent composition of claim 1, wherein the non-ferrous corrosion inhibitor is at least one of benzotriazole, methylbenzotriazole, sodium salt of benzotriazole, and sodium salt of methylbenzotriazole.
  5. 5. The stain and rust resistant oil complexing agent composition of claim 1 wherein the antioxidant is at least one of a phenolic antioxidant and an aminic antioxidant.
  6. 6. The stain and rust resistant oil complexing agent composition of claim 1 wherein the co-solvent is span 80 or diethylene glycol monobutyl ether.
  7. 7. The stain and rust resistant oil complexing agent composition of claim 1 wherein the base oil is at least one of a mineral oil, a synthetic oil and a reclaimed oil.
  8. 8. The stain and rust resistant oil complexing agent composition of claim 1 wherein the base oil is at least one of a technical white oil, a synthetic oil and a reclaimed oil.
  9. 9. A method of preparing the stain and rust resistant oil complexing agent composition of claim 1, the method comprising: And heating and stirring the base oil at 60-70 ℃, adding a film forming agent and an antioxidant, stirring at a high speed for 0.5-2 hours, sequentially adding a barium sulfonate rust inhibitor, a composite acid calcium rust inhibitor, an organic carboxylic acid rust inhibitor, a nonferrous metal corrosion inhibitor and a cosolvent, and stirring at a constant temperature of 50-60 ℃ for 1-3 hours.

Description

Stain-resistant rust-preventive oil complexing agent composition and preparation method thereof Technical Field The invention relates to a stain-resistant rust-preventive oil complexing agent composition and a preparation method thereof. Background The barium sulfonate is used as representative of sulfonate rust inhibitor, is the earliest and most widely used rust inhibitor in China, has good rust resistance, excellent water displacement property, salt fog resistance and moist heat resistance, has excellent rust resistance to various metals, and has more remarkable effect especially when being compounded with other types of rust inhibitors. The technical staff uses barium sulfonate as a main agent and develops various antirust oil complexing agent compositions. Patent CN103305317a discloses a metal antirust complexing agent containing oil-soluble polyaniline and application thereof. The patent prepares the rust preventive oil complexing agent composition by compounding barium petroleum sulfonate with oil-soluble polyaniline and dodecenyl succinic acid. The complexing agent has good solubility, no phase separation and uniform and stable solution system, can be prepared into lubricating oil type rust-preventive oil, or solvent diluted rust-preventive oil without film forming agent or hard film rust-preventive oil, has the advantages of small total addition amount of the formed rust-preventive oil, small viscosity and good rust-preventive effect, and particularly has outstanding salt spray prevention performance, when the total addition amount of the rust-preventive complexing agent is within 9 percent, the salt spray rust-preventive periods of the prepared lubricating oil type rust-preventive oil, solvent diluted rust-preventive oil without film forming agent and hard film rust-preventive oil are respectively more than 6 days, more than 11 days and more than 31 days, and the damp-heat rust-preventive period is more than 60 days. Patent CN103965994 discloses a cleaning-free rust preventive oil composite additive and a preparation method thereof. The invention is composed of 5-20% of benzotriazole, 10-45% of heptadecenyl amidine alkenyl succinic acid amine salt, 10-45% of barium petroleum sulfonate, 15-55% of low-base-number calcium petroleum sulfonate, 15-55% of zinc didecyl naphthalene sulfonate and 5-15% of diluent oil. The composition is added into corresponding base oil according to a certain proportion to form the film rust-proof oil, so that the sealing rust-proof purpose can be met, and the rust-proof purpose between machining processes can also be achieved. Patent CN110343561 uses alkyl sulfonate, alkenyl succinic acid, sorbitan oleate, methyl benzotriazole or benzotriazole, high molecular film forming agent, base oil and antioxidant BHT as raw materials, and utilizes positive synergistic effect between the raw materials to fully exert the functional potential of the raw materials, so as to prepare the rust-preventive oil composite additive with excellent salt fog resistance and damp-heat resistance. The patent CN112500913 discloses a high-efficiency anti-rust oil complexing agent composition and a preparation method thereof, wherein the high-efficiency anti-rust oil complexing agent composition comprises, by weight, 30-35 parts of barium petroleum sulfonate, 30-35 parts of dinonyl naphthalene sulfonate, 18-23 parts of dodecenyl succinic acid, 1-5 parts of benzotriazole, 0.5-1 part of an antioxidant and 10-15 parts of a film forming agent. According to the technical scheme, the prepared high-efficiency anti-rust oil complexing agent composition is common in raw materials, and after the anti-rust oil is prepared, a workpiece has excellent salt fog resistance and anti-wet heat resistance. Barium sulfonate has excellent rust resistance, but in some cases, the phenomenon of spot is easy to occur, and especially in the case of stacking workpieces, the spot is more obvious. Disclosure of Invention In order to solve the problem of workpiece spot, the invention provides a spot-resistant rust-preventive oil complexing agent composition and a preparation method thereof, wherein the scheme is as follows: In a first aspect, the invention provides a stain-resistant rust-preventive oil complexing agent composition, which comprises the following components in percentage by mass: 5-40% of a composite acid calcium antirust agent; 20-70% of barium sulfonate antirust agent; 5-20% of organic carboxylic acid antirust agent; 5-20% of a film forming agent; 0.1-3% of nonferrous metal corrosion inhibitor; 0.3-1.0% of antioxidant; 5-15% of cosolvent; 5-15% of base oil. In one or some preferred embodiments, the stain-resistant rust preventive oil complexing agent composition comprises the following components in percentage by mass: 7-35% of a composite acid calcium antirust agent; 25-65% of barium sulfonate antirust agent; 7-15% of organic carboxylic acid antirust agent; 7-15% of a film forming agent; 0.3-2.5% of nonferrous meta