发明名称 |
Biodegradable branched synthetic ester base stocks and lubricants formed therefrom |
摘要 |
A biodegradable synthetic ester base stock which comprises a blend of the following base stocks: (A) the reaction product of: (1) a branched or linear alcohol having the general formula R(OH)n, wherein R is an aliphatic or cyclo-aliphatic group having from about 2 to 20 carbon atoms and n is at least 2; and (2) mixed acids comprising about 30 to 80 molar % of a linear acid having a carbon number in the range between about C5 to C12, and about 20 to 70 molar % of at least one branched acid having a carbon number in the range between about C5 to C10 and wherein no more than 10% of the branched acids used to form the biodegradable synthetic ester base stock contains a quaternary carbon; wherein the ester base stock exhibits the following properties: at least 60% biodegradation in 28 days as measured by the Modified Sturm test, a pour point of less than -25 DEG C.; and a viscosity of less than 7500 cps at -25 DEG C.; and (B) another base stock having at least 60% biodegradation in 28 days as measured by the Modified Sturm test; whereby the blended product has a biodegradation in 28 days as measured by the Modified Sturm test which is greater than either (A) or (B) alone.
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申请公布号 |
US5681800(A) |
申请公布日期 |
1997.10.28 |
申请号 |
US19950569821 |
申请日期 |
1995.12.08 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
DUNCAN, CAROLYN BOGGUS;MEADE, LEAH KATHERINE |
分类号 |
C10M135/08;C10M105/38;C10M105/40;C10M169/04;C10M171/00;C10N20/00;C10N30/00;C10N40/04;C10N40/08;C10N40/26;C10N50/10;(IPC1-7):C10M129/70;C10M129/74 |
主分类号 |
C10M135/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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