Alkyl acrylate copolymer dispersants and uses thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10M-169/00
C08F-220/18
C10M-149/06
C10M-149/14
C08F-222/06
출원번호
US-0494598
(2006-07-28)
등록번호
US-8980804
(2015-03-17)
발명자
/ 주소
Loper, John T.
Mathur, Naresh C.
Srinivasan, Sanjay
출원인 / 주소
Afton Chemical Corporation
대리인 / 주소
Wolf, Greenfield & Sacks, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
33
초록▼
A novel a polymer dispersant comprising an additive reaction product obtained by reacting a first monomer comprising a mixture of alkylacrylates of varying chain lengths with a second monomer comprising an olefinic carboxylic acylating agent under conditions effective for free radical polymerization
A novel a polymer dispersant comprising an additive reaction product obtained by reacting a first monomer comprising a mixture of alkylacrylates of varying chain lengths with a second monomer comprising an olefinic carboxylic acylating agent under conditions effective for free radical polymerization of the first and second monomers to provide a base polymer comprising an acylated alkylacrylate copolymer, and wherein the base polymer is further reacted with a hydrocarbyl amine to provide an amine-functionalized polyalkylacrylate copolymer dispersant. The base polymer intermediate has a number average molecular weight between about 5,000 to about 50,000. The polyalkylacrylate copolymer dispersant has good dispersancy, low temperature properties, thickening efficiency, and antioxidancy properties. They also can improve fuel economy when used in engine lubricating compositions. They also are precipitation- or sedimentation-resistant, and do not cause or encourage such formations in finished fluids incorporating them.
대표청구항▼
1. A dispersant additive comprising a reaction product obtained by reacting i) a first set of monomers comprising alkylacrylates comprising three different subgroups including a first subgroup of alkyl acrylates wherein the alkyl group has 1 to 4 carbon atoms, a second subgroup thereof wherein the a
1. A dispersant additive comprising a reaction product obtained by reacting i) a first set of monomers comprising alkylacrylates comprising three different subgroups including a first subgroup of alkyl acrylates wherein the alkyl group has 1 to 4 carbon atoms, a second subgroup thereof wherein the alkyl group has 8 to 16 carbon atoms, and a third subgroup wherein the alkyl group has 17 to 30 carbon atoms, with ii) a second monomer comprising an unsaturated anhydride acylating agent under conditions effective for free radical polymerization of the first and second monomers to provide a base polymer comprising an acylated alkylacrylate copolymer having a weight average molecular weight between about 5,000 and about 50,000, andafter formation of the acylated alkylacrylate copolymer base polymer, reacting the base polymer with hydrocarbyl amine to form an amine-functionalized polyalkylacrylate copolymer dispersant, wherein the hydrocarbyl amine further comprises an acylated mono polyisobutylene succinimide group. 2. The dispersant additive of claim 1, wherein the base polymer has a number average molecular weight between about 8,000 to about 15,000. 3. The dispersant additive of claim 1, further comprising a second hydrocarbyl amine is selected from the group consisting of polyalkylene succinimide, acylated polyalkylene succinimide, alkyl polyamines, fatty polyamines, and fatty alkyl ether polyamines. 4. The dispersant additive of claim 1, further comprising a second hydrocarbyl amine is an alkyl polyamine selected from the group consisting of diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), pentaethylenehexamine (PEHA), and bis-aminopropyl piperazine. 5. The dispersant additive of claim 1, wherein the mono succinimide is represented by the formula: in which R1 is a hydrocarbyl radical having from about 8 to 800 carbon atoms, X is a divalent alkylene or secondary hydroxy substituted alkylene radical having from 2 to 3 carbon atoms, A is a hydrogen or a hydroxyacyl radical selected from the group consisting of glycol, lactyl, 2-hydroxy-methyl propionyl and 2,2′-bishydroxymethyl propionyl radicals and in which at least 30 percent of said radicals represented by A are said hydroxyacyl radicals, y is a number from 1 to 6, and R2 is a radical selected from the group consisting of —NH2, —NHA or a hydrocarbyl substituted succinyl radical having the formula in which R1 is as defined above. 6. The dispersant additive of claim 1, wherein the gravimetric ratio of the first, second and third subgroups of alkylacrylate monomers ranges from about 5:95:0.05 to about 35:55:10, respectively. 7. The dispersant additive of claim 1, wherein the alkylacrylates have the general structure: where R3 is hydrogen or a C1-C5 alkyl group, and R4 is a non-substituted or substituted C1-C30 alkyl group with the proviso that R4 is selected effective to provide said first, second and third subgroups of alkylacrylate monomers in said molar ratio. 8. The dispersant additive of claim 7, wherein R3 is methyl. 9. The dispersant additive of claim 1, wherein the second monomer comprises an unsaturated dicarboxylic acid anhydride or corresponding acid thereof. 10. The dispersant additive of claim 1, wherein the second monomer is selected from the group consisting of maleic anhydride, itaconic anhydride, halomaleic anhydride, alkylmaleic anhydride, maleic acid, fumaric acid, and combinations and derivatives thereof. 11. The dispersant additive of claim 1, wherein the first monomer comprises methacrylate and the second monomer comprises maleic anhydride. 12. The dispersant additive of claim 1, wherein the base polymer comprises monomeric units derived from about 99.9 to about 80 weight percent of said first set of alkylacrylate monomers and about 0.1 to about 20 weight percent unsaturated anhydride acylating agent monomers. 13. The dispersant additive of claim 1, wherein the additive reaction product comprises a multi-functional polymer viscosity modifier having a number average molecular weight between about 5,000 to about 50,000. 14. An additive concentrate comprising, on an active ingredient basis, 20 to 90 weight percent of a carrier or diluent oil and from about 10 to about 80 weight percent of the additive reaction product of claim 1. 15. A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and a minor amount of the additive reaction product of claim 1. 16. The lubricating oil composition of claim 15, wherein the additive reaction product is present in the lubricating oil composition in amount of from about 0.5 weight percent to about 18 weight percent. 17. The lubricating oil composition of claim 15, wherein the oil of lubricating viscosity is selected from the group consisting of Group I oils, Group II oils, Group III oils, Group IV oils, synthetic oils, and mixtures thereof. 18. The dispersant additive of claim 1, wherein the first monomer comprises methacrylate and the second monomer comprises maleic anhydride.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (33)
Liesen Gregory P. ; Jao Tze Chi ; Li Shoutian, (Meth) acrylate copolymer pour point depressants.
Germanaud Laurent (Heyrieux FRX) Truong-Dinh Nguyen (Vallauris FRX) Marie Gilbert (Pau FRX) Turello Patrick (Francheville FRX), Additives to lubricants resulting from the condensation of an alkylene polyamine with a copolymer containing vicinal car.
Benfaremo Nicholas (Wappingers Falls NY) Kapuscinski Maria M. (Carmel NY) Nalesnik Theodore E. (Wappingers Falls NY), Dispersant/antioxidant VII lubricant additive.
Mishra Munmaya K. (Wappingers Falls NY) Rubin Isaac D. (Wappingers Falls NY), Functionalized graft co-polymer as a viscosity and index improver, dispersant, and anti-oxidant additive and lubricating.
Valcho Joseph J. ; Rees Mark,GBX ; Growcott Peter,GBX ; Devlin Mark Thomas ; Olivier Errol J., Highly grafted, multi-functional olefin copolymer VI modifiers.
Karol Thomas J. (Wappingers Falls NY) Schlicht Raymond C. (Fishkill NY) Magaha Harold S. (Wappingers Falls NY), Hydrocarbyl-substituted mono- and bis-succinimide having polyamine chain linked hydroxyacyl radicals and mineral oil com.
Cody, Ian A.; Murphy, William J.; Gallagher, John E.; Boyle, Joseph P.; Zinicola, Anne M.; May, Christopher J.; Kim, Jeenok T.; Groestch, John A.; Hantzer, Sylvain S., Hydroconversion process for making lubricating oil basestockes.
Chen Jackson C. (Troy MI) Baylerian Marguerite S. (Huntington Woods MI) Davis Bryan T. (West Bloomfield MI) Rifkin Ellis B. (Southfield MI), Lubricating oil ashless dispersant and lubricating oils containing same.
Ritchie, Andrew J. D.; Bansal, Jai G.; Emert, Jacob; Fetterman, Glen P.; Gutierrez, Antonio; Irving, Matthew D.; Locke, Christopher J.; Minotti, Michael T., Lubricating oil compositions.
Hart William P. (Freehold NJ) Kapuscinski Maria M. (Carmel NY) Liu Christopher S. (Poughkeepsie NY), Lubricating oil containing dispersant viscosity index improver.
Liu Christopher Soundang ; Migdal Cyril Andrew ; Crawford Norris Roland ; Yamamota Roy Isamu, Polyisobutylene succinimide and ethylene-propylene succinimide synergistic additives for lubricating oils compositions.
Emert Jacob (Brooklyn NY) Rossi Albert (Warren NJ) Rea Salvatore (Franklin Square NY) Frederick Jeffrey W. (Morris Plains NJ) Kim Mahn W. (Califon NJ), Polymers derived from ethylene and 1-butene for use in the preparation of lubricant dispersant additives.
Nalesnik Theodore E. (Beacon NY) Benfaremo Nicholas (Wappingers Falls NY), Post-coupled mono-succinimide lubricating oil dispersant and viton seal additives.
Hei Robert D. P. ; Besse Michael E. ; Klos Terry J. ; Lokkesmoe Keith D. ; Tarara James J. ; Person Hei Kimberly L., Vehicle cleaning and drying compositions.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.