Heat treatment oil composition

• US 10,731,099 B2
• Filed: 02/16/2016
• Issued: 08/04/2020
• Est. Priority Date: 02/18/2015
• Status: Active Grant

• Current Assignee: Idemitsu Kosan Company Limited
• Original Assignee: Idemitsu Kosan Company Limited
• Inventors: Hattori, Hideaki, Ichitani, Katsumi
• Primary Examiner(s): McAvoy, Ellen M
• Application Number:
  US15/550,868
• Publication Number:
  US 20180023022A1
• Time in Patent Office: 1,631 Days
• Field of Search: 148 29
• CPC Class Codes: C10M 105/00 Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
• CPC Class Codes: C10M 127/00 Lubricating compositions characterised by the additive being a non- macromolecular hydrocarbon petroleum fractions C10M159/04
• CPC Class Codes: C10M 159/02 Natural products
• CPC Class Codes: C10M 159/04 Petroleum fractions, e.g. tars, solvents
• CPC Class Codes: C10M 159/12 Reaction products
• CPC Class Codes: C10M 169/041 the additives being macromolecular compounds only
• CPC Class Codes: C10M 2203/003 used as base material
• CPC Class Codes: C10M 2203/10 Petroleum or coal fractions, e.g. tars, solvents, bitumen
• CPC Class Codes: C10M 2205/026 Butene
• CPC Class Codes: C10M 2205/18 Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras
• CPC Class Codes: C10M 2205/20 Natural rubber; Natural resins
• CPC Class Codes: C10N 2020/02 Viscosity; Viscosity index
• CPC Class Codes: C10N 2020/04 Molecular weight; Molecular weight distribution
• CPC Class Codes: C10N 2030/00 Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
• CPC Class Codes: C10N 2030/02 Pour-point; Viscosity index
• CPC Class Codes: C10N 2030/08 Resistance to extreme temperature
• CPC Class Codes: C10N 2040/242 Hot working
• CPC Class Codes: C10N 2060/02 Reduction, e.g. hydrogenation
• CPC Class Codes: C21D 1/58 Oils

Abstract

A heat treatment oil composition is provided that suppresses the decrease of luster in a heat treatment of a metal material, and is capable of suppressing the increase of the number of second (characteristic number of second) until reaching the temperature where the vapor blanket stage ends with the lapse of time and the decrease of the kinetic viscosity with the lapse of time. The heat treatment oil composition contains (A) a base oil and (B) a vapor blanket breaking agent selected from one or more of a petroleum resin, a terpene resin, rosin, and derivatives thereof.

Claims

1. A heat treatment oil composition, comprising:

(A) a base oil; and

(B) at least one vapor blanket breaking agent selected from the group consisting of;

a derivative of a terpene resin selected from the group consisting of a hydrogenated terpene resin, an aromatic-modified terpene resin and an aromatic-modified hydrogenated terpene resin,

a rosin, and

a derivative of a rosin selected from the group consisting of a rosin ester, a maleic acid-modified rosin resin, a fumaric acid-modified rosin resin, a polymerized rosin, a polymerized rosin ester, a rosin-modified phenol resin, a hardened rosin, a disproportionated rosin, and hydrogenated compounds thereof.

2. The heat treatment oil composition according to claim 1, wherein the vapor blanket breaking agent is selected from the group consisting of the derivative of the terpene resin, the rosin, and the derivative of the rosin, each have a softening point measured by the ring and ball method of JIS K2207:

2006 of 40°

C. or more.

3. The heat treatment oil composition according to claim 2, wherein the vapor blanket breaking agent is selected from the group consisting of the derivative of the terpene resin, the rosin, and the derivative of the rosin, each have a softening point measured by the ring and ball method of JIS K2207:

2006 of 60°

C. or more and 150°

C. or less.

4. The heat treatment oil composition according to claim 1, wherein the base oil as the component (A) has a 40°

C. kinetic viscosity of from 5 to 500 mm²/s.

5. The heat treatment oil composition according to claim 1, comprising:

80% by mass or more and less than 100% by mass of the base oil; and

more than 0% by mass and 20% by mass or less of the vapor blanket breaking agent, based on a total mass of the heat treatment oil composition.

6. The heat treatment oil composition according to claim 1, wherein the heat treatment oil composition has a characteristic number of second obtained from a cooling curve obtained according to the cooling capability test method of JIS K2242:

2012 of 2.50 seconds or less.

7. The heat treatment oil composition according to claim 1, wherein the at least one vapor blanket breaking agent is the derivative of a terpene resin.

8. The heat treatment oil composition according to claim 1, wherein the at least one vapor blanket breaking agent is selected from the group consisting of:

the rosin, and

the derivative of a rosin.

9. The heat treatment oil composition according to claim 1, wherein the heat treatment oil composition has a characteristic number of second obtained from a cooling curve obtained according to the cooling capability test method of JIS K2242:

2012 of 2.09 seconds or less.

10. The heat treatment oil composition according to claim 1, wherein the heat treatment oil composition has a characteristic number of second obtained from a cooling curve obtained according to the cooling capability test method of JTS K2242:

2012 of 1.70 seconds or less.