TWI493027B - 聚伸烷基二醇潤滑劑組成物 - Google Patents

聚伸烷基二醇潤滑劑組成物 Download PDF

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TWI493027B
TWI493027B TW098114013A TW98114013A TWI493027B TW I493027 B TWI493027 B TW I493027B TW 098114013 A TW098114013 A TW 098114013A TW 98114013 A TW98114013 A TW 98114013A TW I493027 B TWI493027 B TW I493027B
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lubricant composition
acid
lubricant
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polyalkylene glycol
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約翰Ａ 東恩
馬帝斯 沃宜特
丹尼爾Ｆ 茲威費爾
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陶氏全球科技有限責任公司
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Description

聚伸烷基二醇潤滑劑組成物
本申請案係一請求美國臨時專利申請案第61/125,701號案(2008年4月28日申請，發明名稱“聚伸烷基二醇潤滑劑組成物"，其教示內容在此係如同於其後被完全複製般被併入以供參考之用)之優先權之非臨時申請案。
本發明係有關於一種聚伸烷基二醇(PAG)潤滑劑組成物，其含有天門冬氨酸之醯胺或酯衍生物，或天門冬氨酸之第V族鹽。
引擎潤滑劑油係由基本油及添加劑組成。某些合成油(諸如，PAG)特徵在於固有之低摩擦性質及良好之低及高溫黏度性質，其促進移動零件間優異之水動力膜形成。
以PAG為主之引擎潤滑劑油由於其與汽車引擎設計部門需要之增加數量之新的性能標準有關之固有性質而發現增加原始設備製造商(OEM)之興趣。
存在對於可溶於PAG之複合添加劑之需求，較佳係其中複合添加劑本身符合某些bio-no-tox標準或不會使基本油之生物學及毒理學(“bio-no-tox”)性質降至低於，例如，歐盟執委會(European Community directive)EC/1999/45所示之標準，且適於PAG之特殊化學及氧化動力學，以符合用於內燃機油之重要應用性能要求及超過由烴所知者。執委會EC/1999/45之標準在此被併入以供作為用以決定一複合添加劑是否係依據本發明之標準之參考用。
於一方面或實施例，本發明係一種用於汽車引擎之潤滑劑組成物，包含：(A)至少一PAG，其適於作為一汽車引擎之一潤滑劑，及(B)一複合添加劑，其包含一酸清除劑，其中，此酸清除劑係天門冬氨酸酯、天門冬氨酸醯胺，天門冬氨酸之第V族鹽，或其等之混合物。
潤滑劑組成物可含有另外之組份且具有某些性質，不受限地包含如下之組成物，其中：複合添加劑進一步包含(i)至少()一極壓抗磨添加劑，(ii)一抗腐蝕添加劑，(iii)一抗氧化劑，(iv)一摩擦改質劑，(v)一另外之酸清除劑，或(i)-(v)之任何組合；此複合添加劑於攝氏25度(℃)可溶於PAG；此複合添加劑符合EC/1999/45之生物學及毒理學標準且較佳係不會使PAG(亦稱為“潤滑劑油基本原料)之生物學及毒理學性質降至低於(不通過)EC/1999/45之標準；組成物排除不符合EC/1999/45生物學及毒理學標準之添加劑或不會使潤滑劑油基本原料之生物學及毒理學性質降低；複合添加劑包含一增稠劑；複合添加劑包含一清潔劑者被排除；及其等之混合物。
於另一方面，本發明係一種潤滑一汽車引擎之方法，包含：使用如上之潤滑劑組成物作為一潤滑劑油。
用以配製本發明潤滑劑組成物之潤滑油基本原料係主要或排它地由具潤滑黏度之PAG組成。廣泛之各種此等油質液體係可以商業物品獲得。一般，PAG於40℃具有20厘斯(cSt)(20平方厘米/秒(mm2 /s))至10,000 cSt(10,000 mm2 /s)範圍之黏度及於100℃為3 cSt(3 mm2 /s)至2,000 cSt(2,000 mm2 /s)範圍之黏度。基本原子較佳係符合EC/1999/45之生物學及毒理學標準。
適合之PAG不受限地包含1,2-氧化物(鄰位環氧化物)與水，或醇，或每分子含有2個羥基至6個羥基及2個碳原子(C2 )與8個碳原子(C8 )之間之脂族多羥基醇之反應產物。用於製備此等PAG之適合化合物包含較低(C2 至C8 )之伸烷基氧化物，諸如，環氧乙烷、環氧丙烷、環氧丁烷、環氧環己烷，及縮水甘油。此等1,2-氧化物之混合物亦可用以製備PAG。PAG可藉由已知技術形成，其中，脂族多羥基醇或水或單羥基醇(通常稱為"起始劑")與單一之1,2-氧化物或二或更多之1,2-氧化物之混合物反應。若要的話，起始劑可先以一1,2-氧化物氧烷基化，其後以不同之1,2-氧化物或1,2-氧化物之混合物氧烷基化。經氧烷基化之起始劑可以不同之1,2-氧化物進一步氧烷基化。
為了方便，"混合物"當被應用於含有1,2-氧化物之混合物之PAG時係包含無規及/或規段之聚醚，諸如，藉由下列製備者：(1)使二或更多之1,2-氧化物與起始劑同時反應而獲得之無規加成；(2)其中起始劑先與一1,2-氧化物反應然後與第二之1,2-氧化物反應之嵌段加成，及(3)其中起始劑先與第一1,2-氧化物反應之嵌段加成，其後係其中起始劑與第一1,2-氧化物及第二1,2-氧化物之混合物反應之嵌段加成。
任何適合比率之不同1,2-氧化物可被使用。當環氧乙烷(EO)及環氧丙烷(PO)之混合物被用以藉由無規及/或嵌段加成形成聚醚，EO之比率一般係3重量%(wt percent)與60重量%之間，且較佳係5重量%與50重量%之間，其係以總混合物重量為基準計。
用於製造PAG之脂族多羥基醇反應物包含每分子含有二羥基(OH)至六OH基間及二碳原子(C2 )至八碳原子(C8 )者，以諸如下述之化合物例示：乙二醇、丙二醇、2,3-丁二醇、1,3-丁二醇、1,4-丁烷二醇、1,3-丙烷二醇、1,5-戊烷二醇、1,6-己二醇、丙三醇、三甲基醇丙烷、山梨糖醇、季戊四醇，其等之混合物等。環狀脂族多羥基化合物(諸如，澱粉、葡萄糖、蔗糖，及甲基葡萄糖苷)亦可用於PAG之製備。前述多羥基化合物及醇之每一者可以EO、PO、環氧丁烷(BO)、環氧環己烷、縮水甘油，或其等之混合物氧烷基化。例如，丙三醇先以PO氧烷基化，然後，形成之PAG以EO氧烷基化。另外，丙三醇與EO反應，且形成之PAG與PO及EO反應。上述多羥基化合物之每一者可與EO及PO之混合物或二或更多之任何前述1,2-氧化物以相同方式反應。用以自混合之1,2-氧化物製備適合聚醚之技術係示於美國專利第2,674,619；2,733,272；2,831,034；2,948,575；及3,036,118號案。起始材料可自天然發生之材料衍生，諸如，PO係自以丙三醇為主之單丙二醇(MPG)衍生，或EO係自乙醇衍生，或四氫呋喃係自半纖維素衍生。同樣地，聚二醇酯可自再生性之酯(諸如，蔬菜油或油酸葵花油、芥花籽油、黃豆油、其等之個別之高油酸產物，與蓖麻油、雷斯克懶勒油、麻風籽油，及其等之衍生物)製造。
典型上作為起始劑之單羥基醇包含較低之非環狀醇(諸如，甲醇、乙醇、丙醇、丁醇、戊醇、己醇、新戊醇、異丁醇、癸醇等)，與具11個碳至22個碳之自天然及石化來源衍生之較高非環狀醇。如上所示，水亦可作為起始劑。
用於本發明之較佳PAG包含藉由將EO及PO聚合至起始劑上而產生之PAG。
潤滑劑油基本原料可含有一含量，較佳係微量(少於50重量%，其總潤滑劑油基本原料重量為基準計)之其它型式之潤滑油，諸如，蔬菜油、礦物油，及合成潤滑劑，諸如，聚酯、烷基芳香族物、聚醚、氫化或未氫化之聚-α-烯烴及具潤滑黏度之相似物質。
於一實施例，一或多數之潤滑劑油(較佳係PAG)基本原料可具化學式：R-[X-(CH2 CH2 O)n (Cy H2y O)p -Z]m 其中，R係H或具有1個碳原子至30個碳原子之烷基或烷基-苯基；X係O、S，或N；y係3至30之單一或混合之整數；Z係H或含有1個碳原子至30個碳原子之烴基或烴氧基；n+p係6至60，且n及p之分佈可為任意或以任何特定順序；m係1至8；且聚醚分子量係350道爾頓至3,500道爾頓。用於本發明組成物之PAG可包含其中存在之OH官能基被轉化成醚基之封端材料。
用於引擎及齒輪油應用之各種PAG產品現可購得，不受限地包含以下列品牌名稱出售之產品：PLURIOLTM A750E；PLURACOLTM WS55、WS100、WS170、B11/25、B11/50、B32/50；BREOXTM A299；BREOXTM 50A；PPG-33-系列；UCONTM 50-HB系列；SYNALOXTM 50-xxB系列；SYNALOXTM 100-xxB系列；GLYGOYLETM HE460；D21/150；PLURONICTM 450PR、PLURONICTM 600PR；TERRALOXTM WA46、TERRALOXTM WA110；SYNALOXTM 40-D150；聚二醇B01/20、B01/40、B01/50、B15,B35；UCON LB65、LB125、LB165、LB285、WI285、WI625；P41/200；PLURONICTM GENAPOLTM ；WAKO T01/15、T01/35、T01/60；LUPRANOLTM 9209及3300；及SELEXOLTM 。
複合添加劑及其組份之每一者較佳係符合EC/1999/45生物學及毒理學標準，更佳地，不會使潤滑劑油基本原料之性能降至低於(即，不通過)EC/1999/45生物學及毒理學標準。複合添加劑及其組份之每一者更佳地係可於室溫(一般係25℃)或於高溫溶於潤滑劑油基本原料。
天門冬氨酸之酯及醯胺，與(元素週期表)之第V族之鹽(統稱為“天門冬氨酸衍生物”)被用於本發明之實施作為一必要之潤滑劑組成物組份。用以形成酯及醯胺之化合物可包含1個碳原子至25個碳原子，更佳係1個碳原子至6個碳原子。例如，羧酸基可被轉化成甲基或乙基酯(或其等之混合物)。本發明添加劑中之每一天門冬氨酸官能基之一或二羧酸基可反應形成此等酯、醯胺，及第V族鹽。典型上，羧酸基反應形成作為用於本發明之各方面或實施例之酸清除劑之此等酯、醯胺，及第V族鹽。此等天門冬氨酸衍生物之量可改變。一般，此量係0.01重量%至10重量%，其係以潤滑劑組成物總重量為基準計。更典型地，此量係0.1重量%至1重量%。用以與天門冬氨酸反應形成天門冬氨酸衍生物之材料諸如氨及其它第V族化合物之化合物，包含以銨、鏻、砷，及銻為主之材料，胺，諸如，C1 -C50 脂族胺，諸如，甲基胺、乙基胺、丙基胺，及丁基胺。第V族鹽以潤滑劑組成物之改良腐蝕性質而言似乎優於1A族陽離子鹽。此外，相較於1A族鹽，第V族鹽於以PAG為主之潤滑劑油基本原料中具有改良之可溶性。此間使用之天門冬氨酸衍生物包含單酸及多酸(例如，含有二或更多天門冬氨酸官能基者(“聚天門冬氨酸”))。
天門冬氨酸及聚天門冬氨酸係指含有一或多數天門冬氨酸基之化合物。典型上，此間使用之添加劑含有二個天門冬氨酸基。天門冬氨酸之酯、醯胺，及第V族鹽包含以下列化學式為主之組成物。
於如上之化學式，其描述天門冬氨酸之均聚物，羧酸基或部份可被轉化成酯、醯胺，及第V鹽之任一者。
聚天門冬氨酸化合物可以包含與其附接之多數天門冬氨酸基之任何有機結構為基礎，諸如，下列化學式之化合物：A-X-A其中，A係天門冬氨酸之酯、醯胺，或第V族鹽，且X係二價C2 -C25 烴部份。X可包含諸如氧、氮，及硫之另外元素。X可為二價之烷基、脂族基，或芳香族基，包含含有環狀結構之烷基及脂族基。X亦可以二環己基烷為主。典型上，天門冬氨酸之一氮原子與二價烴部份形成一鍵。一例示之濛天門冬氨酸化合物具有下列結構： 其係天門冬氨酸N,N’-(伸甲基-d-4,1,-環己烷二基)雙-四乙基酯。此天門冬氨酸酯似乎相對應於DESMOPHENTM NH1420聚天門冬氨酸聚胺基共反應物(Bayer MaterialScience)及K-CORRTM 100(King Industries)。
極壓抗磨添加劑可為任何傳統材料，只要其符合如上之EC/1999/45生物學及毒理學及可溶性之性能要求。極壓抗磨添加劑之代表性例子不受限地包含金屬及伸甲基之二烷基-二硫基-氨基甲酸鹽、聚天門冬氨酸之酯、三苯基-硫基磷酸酯、二芳基二硫化物、二烷基二硫化物、烷基芳基硫化物、二苯甲基二硫化物，及其等之混合物。較佳之極壓抗磨添加劑之代表性例子不受限地包含二苯甲基二硫化物(US FDA核准)、O,O,O-三苯基硫代磷酸酯、Zn-二正丁基硫代氨基甲酸鹽、Mo-二丁基二硫代氨基甲酸鹽，及Zn-伸甲基-雙-二烷基二硫代氨基甲酸鹽，且二苯甲基二硫化物係特別佳。可用於實施本發明之可購得之抗磨劑之代表性例子不受限地包含IRGALUBETM 63、211、232，及353(異丙基化之三芳基磷酸酯)；IRGALUBETM 211及232(壬基化之三苯基硫代磷酸酯)；IRGALUBETM 349(胺磷酸酯)；IRGALUBETM 353(二硫代磷酸酯)；IRGAFOSTM DDPP(異癸基二苯基亞磷酸酯)；及IRGAFOSTM OPH(二正辛基亞磷酸酯)。
抗腐蝕添加劑(亦稱為“金屬鈍化劑”)抑制金屬表面腐蝕之單一化合物或化合物之混合物。腐蝕抑制劑可為任何傳統材料，只要其符合如上之EC/1999/45生物學及毒理學及可溶性之性能要求。代表性之抗腐蝕添加劑包含噻二唑及三唑，諸如，甲苯基三唑；二聚物及三聚物酸，諸如，自托爾油脂肪酸、油酸，及亞油酸生產者；烯基琥珀酸及烯基琥珀酸酐腐蝕抑制劑，諸如，四丙烯基琥珀酸、四丙烯基琥珀酸酐、十二烯基琥珀酸、十二烯基琥珀酸酐、十六烯基琥珀酸，及相似化合物；及C8 -C24 烯基琥珀酸與諸如二醇及聚二醇之醇之半酯。亦可使用者係胺基琥珀酸或其衍生物。較佳之抗腐蝕添加劑不受限地包含嗎啉、N-甲基嗎啉、N-乙基嗎啉、胺基乙基哌嗪、單乙醇胺、2胺基-2-甲基丙醇(AMP)、液體甲苯三唑衍生物，諸如，2,2’-甲基-1H-苯并三唑-1-基-甲基-胺基-雙及甲基-1H-苯并三唑、異丙基羥基胺、IRGAMETTM 30(液體甲苯三唑衍生物)、IRGAMETTM 30(液體三唑衍生物)、IRGAMETTM SBT 75(四氫苯并三唑)、IRGAMETTM 42(甲苯三唑衍生物)、IRGAMETTM BTZ(苯并三唑)、IRGAMETTM TTZ(甲苯三唑)、咪唑啉及其衍生物、IRGACORTM DC11(十一烷二酸)、IRGACORTM DC 12(十二烷二酸)、IRGACORTM L 184(TEA中和化之聚羧酸)、IRGACORTM L 190(聚羧酸)、IRGACORTM L12(琥珀酸酯)、IRGACORTM DSS G(正油基肌氨酸)，及IRGACORTM NPA(異壬基苯氧基乙酸)。潤滑劑組成物較佳係含有0.005重量%至0.5重量%，且更佳係0.01重量%至0.2重量%，之抗腐蝕添加劑，每一重量百分率係以總潤滑劑組成物重量為基準計。
抗氧化劑可為任何傳統抗氧化劑，只要其符合如上之EC/1999/45生物學及毒理學之性能要求。抗氧化劑可廣泛改變，包含來自諸如胺及酚之種類的化合物。抗氧化劑可包含位阻酚抗氧化劑(例如，鄰-烷基化酚化合物，諸如，2,6-二第三丁基酚、4-甲基-2,6-二第三丁基酚、2,4,6-三第三丁基酚、2-第三丁基酚、2,6-二異丙基酚、2-甲基-6-第三丁基酚、2,4-二甲基-6-第三丁基酚、4-(N,N-二甲基胺基甲基)-2,6-二第三丁基酚、4-乙基-2,6-二第三丁基酚、2-甲基-6-苯乙烯基酚、2,6-二-苯乙烯基-4-壬基酚，及其類似物與同系物)。較佳抗氧化劑之代表性例子不受限地包含胺抗氧化劑，諸如，與2,4,4-三甲基戊烯之N-苯基-1-萘基胺N-苯基苯胺反應產物；吩噻嗪，諸如，二苯并-1,4,噻嗪、1,2-二氫喹啉，及聚(2,2,4-三甲基-1,2-二氫喹啉)。可購得且適合之抗氧化劑之代表性例子不受限地包含IRGANOXTM L01、L06、L57、L93(烷基化二苯基胺及烷基化苯基-萘基胺)；IRGANOXTM L101、L107、L109、L115、L118、L135(位阻酚抗氧化劑)；IRGANOXTM L64、L74、L94、L134，及L150(抗氧化劑摻合物)；IRGFOSTM 168(二第三丁基苯基磷酸酯)；IRGANOXTM E201(α-生育醇)，及IRGANOXTM L93(含硫之芳香族胺抗氧化劑)。潤滑劑組成物較佳係含有0.01重量%至1.0重量%，更佳係0.05重量%至0.7重量%，之此等抗氧化劑，每一重量百分率係以總潤滑劑組成物重量為基準計。
另外之酸清除劑係具有清除酸之能力之單一化合物或化合物之混合物。酸清除劑可為任何傳統材料，只要其符合如上之EC/1999/45生物學及毒理學及可溶性之性能要求。代表性之酸清除劑不受限地包含位阻碳-二醯亞胺，諸如，FR 2,792,326中所揭示者，其在此被併入以供參考之用。
摩擦(流變)改質劑可為任何傳統材料，只要其符合如上之EC/1999/45生物學及毒理學及可溶性之性能要求。此一材料之代表性非限制性例子係二苯基甲烷-二異氰酸酯六伸甲基二胺及硬脂基胺之共聚物(例如，LUVODURTM PVU-A)。潤滑組成物較佳係含有0.01重量%至1.0重量%，更佳係0.05重量%至0.7重量%，之此等摩擦改質劑，每一重量百分率係以總潤滑劑組成物重量為基準計。
潤滑劑組成物選擇性地提供小量之去乳化劑及/或消泡劑。此等去乳化劑包含有機磺酸酯及氧烷基化酚樹脂。各種消泡劑係此項技藝已知，諸如，硬脂基胺、矽膠，及諸如丙烯酸酯聚合物之有機聚合物。若存在，此等添加劑典型上包含(以個別者為基準)不多於1重量%，其係以總潤滑劑組成物重量為基準計。潤滑劑組成物亦選擇性地含有稠化劑，諸如，聚環氧乙烷、聚丙烯酸酯、苯乙烯-丙烯酸酯膠乳、苯乙烯丁二烯膠乳，及聚胺基甲酸酯預聚物。存在時，增稠劑係以足以提供潤滑劑組成物所欲之稠度或黏度之量使用。
藉由簡單添加此等組份及混合而製備潤滑劑組成物。此可於室溫(一般係25℃)發生。最高達，例如，170℃之較高溫度可用以產生助於添加劑溶於潤滑劑油(較佳係PAG)基本原料。可以超音波或藉由使用高速解膠劑而產生混合。
潤滑劑組成物具有作為用於汽車引擎之潤滑劑之用途。
下列實施例係例示本發明，但非限制其範圍或所附任何申請專利範圍之範圍。除非其它指示，所有百分率係以重量計。
第1表提供依據本發明製備之組成物。此等潤滑劑組成物展現優異潤滑性，係溶液(所有材料被溶解)，且符合或超過EC/1999/45生物學及毒理學標準。SYNALOXTM 100-30B及SYNALOXTM 100-20B係引擎潤滑劑市場之可購得之PAG。
此等組成物當測試其潤滑劑性質時擁有優異潤滑性。複合添加劑可溶於PAG，符合EC/1999/45生物學及毒理學標準，且不會使潤滑劑油基本原子(PAG)之生物學及毒理學性質降至低於EC/1999/45生物學及毒理學標準。實施例2當接受EC/1999/45生物學及毒理學測試時具有138毫克/公升(mg/L)之Daphnia(EL50 )分級，及大於100毫克/公升之Alga(EL50 )分級，及多於60%之生物降解性(經由Organization for Economic Co-operation and Development(OECD 301F))。經由EC/1999/45 EL50 ，超過100毫克/公升之分級係分級為“低毒性”且>60%之生物降解性等於“可輕易生物降解”。
下列第2表顯示實施例2及3與商業上之(Castrol)5W-30機油於任何引擎測試前之使用Optimal Instruments裝置及1毫米(mm)及2之振幅(x)之以牛頓(N)及百萬巴斯卡(MP)計之黏度資訊及Schwingungs-Reibverschleiβ-Prfgert(SRV)摩擦數據。
實施例2及3之潤滑劑組成物被預期於廣泛之引擎測試係至少與商業上之5W-30機油一樣好地實施。
下列之第3表顯示含有如上所述之複合添加劑之另外PAG組成物(實施例4-12，實施例5係比較例(CEx))。第3表亦顯示實施例(Ex)4-12之每一者之聚二醇ICOT測試(以小時計)之結果。於第3表，WA D46-4係可自陶氏化學公司以商品名TERRALOXTM WA-46獲得之PAG(1,4-丁烷二醇起始(18重量%)，且於混合供料以64重量%環氧乙烷(EO)及8重量%環氧丙烷(PO)增充至664道爾頓之數平均分子量(Mn))，且PPG 32-2係可由Clariant以商品名B01/20獲得之PAG(丁醇起始，且以PO增充至900道爾頓之Mn)。ICOT測試係描述於“Test d' oxydation catalyspar l' actyle actonate de fer(ICOT),Groupe Francais de Coordination(GFC),Le Consulat,147,av.Paul Doumer,F-92852 Rueil-Malmaison,gfc@gfc-tests.org；亦見IP48/97(2004)，Determination of oxidation characteristics of lubricating oil”。
比較例5(一比較例)未使用聚天門冬氨酸鹽，且顯示於第3表中使用之添加劑間最小安定化。實施例10驚人地提供於需要替換油前足以能有約40,000公里之行駛循環之潤滑劑組成物安定化。聚天門冬氨酸衍生物似乎作為酸清除劑，但似乎未改變PAG之極壓/抗磨性質。
本發明之進一步改質及另外實施例對於熟習此項技藝者基於此說明內容會係明顯。等化元素或材料可取代此間所例示及描述者。

Claims (7)

  1. 一種用於汽車引擎之潤滑劑組成物，包含：(A)至少一聚伸烷基二醇，其適於作為一汽車引擎內之一潤滑劑，及(B)一複合添加劑，其包含一酸清除劑，其中，該酸清除劑係天門冬氨酸酯、天門冬氨酸醯胺、第V族天門冬氨酸鹽、其等之衍生物，或其等之組合。
  2. 如申請專利範圍第1項之潤滑劑組成物，其中，該複合添加劑進一步包含：(i)至少一極壓抗磨添加劑，或(ii)至少一抗腐蝕劑，或(iii)至少一抗氧化劑，或(iv)至少一摩擦改質劑，或(v)至少一另外之酸清除劑，或(vi)(i)-(v)之任何組合。
  3. 如申請專利範圍第1項之潤滑劑組成物，其中，該複合添加劑於25℃可溶於該聚伸烷基二醇。
  4. 如申請專利範圍第1項之潤滑劑組成物，其中，該複合添加劑符合歐盟執委會EC/1999/45之生物學及毒理學標準且不會使該聚伸烷基二醇之該生物學及毒理學性質降至該組成物不符合此標準之點。
  5. 如申請專利範圍第1項之潤滑劑組成物，其中，該第V族天門冬氨酸鹽係胺鹽。
  6. 一種用以製造申請專利範圍第1至5項中任一項之潤滑劑組成物之方法，該方法包含使該至少一聚伸烷基二醇與該複合添加劑混合。
  7. 一種潤滑一汽車引擎之方法，該方法包含使用申請專利範圍第1至5項中任一項之潤滑劑組成物潤滑該引擎。
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