201142011 六、發明說明： c發明戶斤屬之技術領域3 發明領域 本發明係關於具有難燃性能之生物分解性潤滑油組成 物。特別係本發明關於當作諸如油壓啟動油、門緩閉器油 等潤滑油使用，具有優異難燃性能與高生物分解性能的生 物分解性潤滑油組成物。 c先前技術3 發明背景 相關油壓啟動油，就從其難燃性能提升的觀點有多種 提案。例如專利文獻1〜4分別有提案：含有使六氣磷腈與全 氟烷基醇等進行縮合反應而獲得化合物的自消化性啟動油 (專利文獻1);含有以多元醇與部分酯化多元醇為主成分之 高分子化合物的難燃性油壓啟動油（專利文獻2);在由脂肪 酸酯或磷酸酯構成的基油中，摻合入高分子聚合物與低分 子聚合物的難燃性油壓啟動油（專利文獻3);含有聚伸烷二 醇基液、與可溶於其中且當作防霧化添加劑用之伸烷-乙烯 酯共聚物的啟動液組成物（專利文獻4)等，有記載能獲得優 異的難燃性能。 另一方面，使用油壓啟動油或門緩閉器油等潤滑油的 機器，在火災時會從機器針孔中喷出油劑，導致助長火災。 因而，渴求即便高壓喷霧狀態或漏油情況下，仍能呈現難 燃性能的油壓啟動油或門緩閉器油等潤滑油。又，為求安 全性提升，以及為求更進一步的難燃性能與減輕環境負 201142011 荷，期待具有更進一步生物分解性能的潤滑油組成物。 先行技術文獻 專利文獻 專利文獻1:日本專利第2558496號公報 專利文獻2:日本專利第2888742號公報 專利文獻3 :日本專利特開平11-269480號公報 專利文獻4:日本專利第3017803號公報 【發明内容】 發明概要 發明欲解決之課題 如上述，近年潤滑油亦是就從安全觀點、以及必需減 輕環境負荷的觀點，對油壓啟動油、門緩閉器油等潤滑油 組成物，要求特別係即使油劑洩漏時，難燃性能仍優異、 高生物分解性能，俾降低對環境的影響。 即，本發明的課題在於提供：兼顧更優異難燃性能與 生物分解性能的潤滑油組成物。 用以欲解決課題之手段 本發明係關於下述。 [1]一種生物分解性潤滑油組成物，係摻合(A)與(B)而 成者： (A)基油，其含有0)6〇質量％以上之源自植物之油及 (1?)40質量％以下之多元醇酯；及 (Β)0·1〜5質量％之聚曱基丙烯酸酯，其質量平均分子 量為20,000〜300,000。 201142011 [2] 如上述[1]所記載之生物分解性潤滑油組成物，其中 前述源自植物之油係油酸含量為60質量％以上之菜軒油。 [3] 如前述[1]或[2]所記載之生物分解性潤滑油組成 物，其中前述多元醇S旨係經值30mgKOH/g以上且燃點300 °C以上之部分酯化多元醇。 [4] 如前述[1]〜[3]項中任一項所記載之生物分解性潤滑 油組成物，其中組成物整體於40°C之動黏度為120mm2/s以 下。 [5 ]如前述[1 ]〜[4 ]項中任一項所記載之生物分解性潤滑 油組成物，其係用於油壓啟動油、門緩閉器油或滑動面油。 [6] —種油壓啟動油，其係由如前述[1 ]〜[4]項中任一項 之生物分解性潤滑油組成物所構成。 [7] —種門緩閉器油，其係由如前述[1]〜[4]項中任一項 之生物分解性潤滑油組成物所構成。 發明效果 根據本發明，可提供兼顧更優異難燃性能與生物分解 性能的调滑油組成物。201142011 VI. Description of the Invention: c Technical Field of Invention of Inventions Field of the Invention The present invention relates to a biodegradable lubricating oil composition having flame retardant properties. In particular, the present invention relates to a biodegradable lubricating oil composition which is excellent in flame retardancy and high biodegradability, and is used as a lubricating oil such as a hydraulic starter oil or a door retarder oil. c Prior Art 3 Background of the Invention With regard to the hydraulic starting oil, there are various proposals from the viewpoint of improvement in flame retardancy. For example, Patent Documents 1 to 4 each propose a self-digestible starter oil containing a compound obtained by subjecting a hexafluorophosphazene to a perfluoroalkyl alcohol to a condensation reaction (Patent Document 1); and a polyhydric alcohol and a partially esterified polybasic compound; A flame retardant hydraulic starting oil of a polymer compound containing an alcohol as a main component (Patent Document 2); in a base oil composed of a fatty acid ester or a phosphate, it is difficult to blend a polymer with a low molecular polymer Flammable oil pressure starter oil (Patent Document 3); starter liquid composition containing a polyalkylene glycol base liquid and an alkylene-vinyl ester copolymer which is soluble therein and used as an antifogging additive (Patent Literature) 4) Etc., it is described that excellent flame retardancy can be obtained. On the other hand, a machine that uses oil-based starter oil or door shutter oil, etc., will eject oil from the machine pinhole during a fire, which will contribute to the fire. Therefore, it is eager to obtain a lubricating oil such as a hydraulic starter oil or a door retarder oil which is incombustible even in a high-pressure spray state or oil leakage. In addition, in order to improve safety and to further improve the flame retardant performance and reduce the environment, we expect a lubricant composition with further biodegradability. CITATION LIST Patent Literature Patent Literature 1: Japanese Patent No. 2 558 496 Patent Document 2: Japanese Patent No. 2888742 Patent Document 3: Japanese Patent Laid-Open No. Hei 11-269480 (Patent Document 4: Japanese Patent No. 3017803) OBJECTS OF THE INVENTION The problem to be solved by the invention is as described above. In recent years, lubricating oils have been required for lubricating oil compositions such as hydraulic starting oils and door shutter oils from the viewpoint of safety and the need to reduce environmental load. Even when the oil leaks, the flame retardant performance is excellent, the biodegradability is high, and the environmental impact is reduced. That is, an object of the present invention is to provide a lubricating oil composition which achieves both excellent flame retardancy and biodegradability. Means for Solving the Problems The present invention relates to the following. [1] A biodegradable lubricating oil composition obtained by blending (A) and (B): (A) a base oil containing 0) 6 % by mass or more of plant-derived oil and (1) ?) 40% by mass or less of the polyol ester; and (Β) 0·1 to 5 mass% of the polydecyl acrylate having a mass average molecular weight of 20,000 to 300,000. The biodegradable lubricating oil composition according to the above [1], wherein the plant-derived oil-based oleic acid content is 60% by mass or more. [3] The biodegradable lubricating oil composition according to the above [1], wherein the polyol S is a partially esterified polyol having a pass value of 30 mgKOH/g or more and a flash point of 300 °C or higher. [4] The biodegradable lubricating oil composition according to any one of [1] to [3] wherein the composition has an kinetic viscosity at 40 ° C of 120 mm 2 /s or less. [5] The biodegradable lubricating oil composition according to any one of the above [1] to [4], which is used for a hydraulic starter oil, a door retarder oil or a sliding surface oil. [6] A hydraulic oil-based starter oil comprising the biodegradable lubricating oil composition according to any one of the above [1] to [4]. [7] A door-type retarder oil comprising the biodegradable lubricating oil composition according to any one of the above [1] to [4]. EFFECT OF THE INVENTION According to the present invention, it is possible to provide a lubricating oil composition which achieves both excellent flame retardancy and biodegradability.
C 方包方式J 用以實施發明之形態 以下，針對本發明進行更具體說明。 本發明的生物分解性潤滑油組成物係摻合(A)與(B)而 成者。（A)基油係含有（a)60質量％以上之源自植物之油及 (b)40質量％以下之多元醇酯。（B)質量平均分子量為 20,000〜300,000的聚甲基丙烯酸酯0.1〜5質量％。 201142011 [(A)基油] 本發明生物分解性潤滑油組成物的基油（A)，係含有： (a)源自植物之油60質量％以上、及(b)多元醇g旨40質量。/〇以 下。 ((a)源自植物之油） 基油所使用的（a)源自植物之油，係可使用例如：菜籽 油、葵花油、大豆油、玉米油、茶花油）等，其中就從生物 分解性能、熱安定性能等觀點，較佳為葵花油及菜籽油。 源自植物之油大多係總不飽和度超過0.3，但在其精製 步驟中利用氫化等處理便可降低總不飽和度。又，利用基 因重組技術，可輕易製造總不飽和度較低的植物油。本發 明中，就從生物分解性能、熱安定性能等觀點，較佳係使 用依高比例含有油酸的源自植物之油，例如較佳係含油酸 60質量％以上者、更佳係含70質量％以上。此種依高比例含 有油酸的源自植物之油，較佳係可例示如：高油酸芥花油、 高油酸菜籽油、高油酸蔡花油、高油酸大豆油等，更佳係 可使用高油酸菜籽油。 上述源自植物油之油係基油中含有60質量％以上，就 從生物分解性能的觀點，較佳係含有70質量％以上，就從 生物分解性能及熱安定性能的觀點，更佳係75〜99質量％。 ((b)多元醇酯） (A)基油係就從生物分解性能及難燃性能提升的觀 點，含有（b)多元醇酯。多元醇酯並無特別的限制，就從上 述觀點，較佳係以使多元醇與鏈狀單羧酸分別單獨、或組 6 201142011 合二種以上，利用通常的酯化反應所生成之部分酯化多元 醇為主成分者。部分酯化多元醇係多元醇至少其中一部分 酯化者，就從難燃性能的觀點，其酯化率較佳係70〜90%。 此處所謂「酯化率」係含有經酯化的羥基，經酯化羥基數 除以多元醇酯中的總羥基數，可依下式計算出。 酯化率（％)={(SV-AV)x 100}/(OHV+SV-AV) (SV ··皂化價、AV :酸值、OHV :羥值） 供生成多元醇酯用的多元醇，係例如總碳數3〜12且總 羥基數3~6的多元醇，具體可舉例如：丙三醇、三羥曱基乙 烷、三羥甲基丙烷、三羥曱基壬烷等三元醇；或季戊四醇、 二(三羥甲基）丙烷、二季戊四醇、山梨糖醇、己六醇等多元 醇，該等之中，較佳係使用三羥甲基丙烷、季戊四醇、丙 三醇。該等多元醇係可分別單獨使用，且亦可組合使用二 種以上。 再者，供該多元醇酯生成用的鏈狀單羧酸，係例如總 碳數6〜22的鏈狀單羧酸，具體可舉例如：己酸、庚酸、辛 酸、壬酸、癸酸、Η—炫> 酸、月桂酸、十三烧酸、肉苴Μ 酸、十五酸、標摘酸、十七烧酸、硬脂酸、十九烧酸、花 生酸、茶樹酸等直鏈飽和脂肪酸；十一碳烯酸、油酸、反 油酸、鯨蠟酸、芥子酸、巴西烯酸等直鏈不飽和脂肪酸； 異肉苴蔻酸、異棕櫊酸、異硬脂酸、2,2-二曱基丁酸、2,2-二曱基戊酸、2,2-二甲基辛酸、2-乙基-2,3,3-三曱基丁酸、 2,2,3,4-四曱基戊酸、2,5,5-三甲基-2-第三丁基己酸、2,3,3-三甲基-2-乙基丁酸、2,3-二甲基-2-異丙基丁酸、2-乙基己 7 201142011 酸、3，5,5·三曱基己酸等分支飽和脂肪酸等等1等鍵狀單 銳酸係可分別單獨使用，且亦可組合使用二種以上。 該多元醇與鏈狀單羧酸的酯化反應時，藉由調節各自 的裝填比，便可獲得所需的多元醇酯，且為不致降低燃點， 最好將輕質份充分去除。而，當將所獲得多元醇酿使用於 基油時，可直接使用酯化反應生成物，或者亦可摻合各個 反應生成物經獲得所需黏度之後才使用。 本發明中，基油所使用的多元醇酯係羥值較佳為 30mgKOH/g以上、更佳為35mgKOH/g以上。若該經值過 低，則完全酯部分會變多，會與習知物同樣的容易引發持 續燃燒。又，燃點較佳係達30(TC以上。理由係若該燃點過 低便容易著火。 本發明所使用的多元醇酯係分子量依數量平均分子量 計，較佳為600〜1，500、更佳為600〜i’ooo、特佳為65〇~95〇。 若該分子量過低，則黏度與燃點會降低，導致易燃。又， 若過高，則黏度會變為過高，導致傳遞效率變差。相關動 黏度，右配合啟動油專用途在可使用範圍内的話便可，通 常就從泵效率、配管的黏性阻力觀點，溫度4〇〇c下的動黏 度較佳為20〜200mm2/s、更佳為20〜l〇〇mm2/s、特佳為 30〜80mm2/s。如上述黏度範圍内的多元醇酯，較佳係使用 二經甲基丙烧的二酷’且脂肪酸為油酸與異硬脂酸的混合 物者。 在基油中相對於基油總量上述多元醇g旨係含有40質量 %以下，就從難燃性能、生物分解性能、熱安定性能等觀 8 201142011 點’較佳為3〇質量％以下、更佳為25質量％以下、特佳為kb 質量％。 [(B) ♦甲基丙烯酸西旨] 本發明中，（B)聚曱基丙烯酸醋係在使基油不易霧化之 目的下使用，不僅甲基丙烯醆酯的單聚物，尚亦涵蓋共聚 物。就從此種觀點，聚曱基丙烯酸酯的分子量依質量平均 刀子篁計為2〇,〇〇〇~300,000、較佳為3〇〇〇〇〜3〇〇〇〇〇、更佳 為35,000〜200,000。當質量平均分子量較小於2〇 〇〇〇時幾乎 …、法期待上述效果，反之，當大於3〇〇,〇〇〇時在使用中會承 受因剪切所造成的劣化，該項效果亦較薄弱，更會引發黏 度降低，因而最好避免。另外，質量平均分子量係可利用 由GPC(凝膠滲透色層分析儀）進行的聚苯乙烯換算之質量 平均分子量進行測定。 本發明中，聚甲基丙烯酸酯係在潤滑油組成物中摻合 5吳里/〇。右較少於此範圍的摻合量，本發明的效果合 減少，反之若過多亦會有提高剪切劣化的可能性，最好避 免。就從上述觀點’（B)成分在潤滑油組成物中較佳係摻合 〇·1〜4質量％、更佳係0.2〜3.5質量％、特佳係〇.3〜3 3質量％。 本發明生物分解性潤滑油組成物所使用的基油(A )，係 含有上述(a)源自植物之油及上述(b)多元醇酯，本發明藉由 發現該源自植物之油、與多元醇酯、以及(B)成分的聚甲基 两稀酸醋之最佳化合物，便可提供兼顧更優異難燃性能與 生物分解性能的潤滑油組成物。 [(C)其他添加劑] 201142011 本發明的生物分解性潤清油組成物，其他視必要最好 摻合當作潤滑油添加劑用的通常所使用之從抗氧化劑、分 散劑、防銹劑、金屬純化劑、油性劑、極壓添加劑、防乳 化劑、流動性提升劑、及消泡劑中選擇至少一種。 此處所使用的抗氧化劍係可舉例如：2,6-二第三丁基 -4-甲基酚、4,4·-亞曱基雙(2,6-二第三丁基-4-曱基酚）等酚系 抗氧化劑’ N-苯基-〇；-萘胺、N-苯基-召-萘胺、紛π塞啡、單 辛基二本基胺等胺系抗氧化劑’或烧基二硫化物、苯并嗟 唑等硫系抗氧化劑；二烧基二硫代磷酸鋅等。 再者，分散劑係可使用無灰分散劑及/或金屬系潔淨 劑’無灰分散劑係可舉例如：琥珀酸醯亞胺類、含4朋之破 珀酸醯亞胺類、苄胺類、含硼之苄胺類等；金屬系潔淨劑 係可舉例如：中性、鹼性或過鹼性金屬磺酸鹽、金屬笨鹽、 金屬水楊酸鹽、金屬膦酸鹽等。構成金屬磺酸鹽、金屬笨 鹽、金屬水揚酸鹽、金屬膦酸鹽的金屬，較佳係有如ca、 Mg等鹼土族金屬。該等無灰分散劑與金屬系潔淨劑係可使 用1種、亦可組合使用2種以上。 酉旨、 例如 咪唑 防銹劑係可舉例如：烯基琥珀酸、山梨糖醇奸單油於 季戊四醇單油酸酯、胺磷酸酯等；金屬鈍化劑係可舉 .苯并三唑、苯并噻唑、三唑、二硫代胺基甲醆酯、 、邊等的衍生物。 t油性劑係可舉例如：醇類、脂肪酸類及脂肪酸酯類等。 1 月曰肪駿S旨類係可例如由碳數6〜22的脂肪族幾酸、與碳數 1〜18的脂肪族醇所構成酯。醇類較佳係可例如碳數8〜18的 201142011 -元脂肪族飽和或不飽和醇。 極I：添加蜊係可舉例如：二烷基二硫代磷酸鋅、二烷 基夕硫化物 ' 峨酸三芳香酷、雜三烧基醋等。 防礼化#1係可舉例如：聚氧化伸H聚氧化伸烧基 烧基st聚氧化伸境基统基酿胺、聚氧化伸烧脂肪酸醋等。 "IL動性提升劑係可舉例如：聚丙烯酸烷基酯、烷基芳 香族化口物、乙烯、醋酸乙烯酯共聚物等。且，消泡劑係可 舉例如甲基聚矽氧烷、二乙基矽酸酯酯系聚合物等。 該等添加劑係可配合各自目的而決定摻合量，合計較 佳係潤滑油組成物的5.0質量％以下、較佳為3.0質量。/〇以 下、更佳為0.5〜2.5質量〇/0。 [生物分解性潤滑油組成物] 本發明的生物分解性潤滑油組成物係由摻合(A)基油 與（B)質量平均分子量2〇 〇〇〇〜3〇〇,〇〇〇的聚甲基丙烯酸酯 〇.1〜5質量°/❶構成。該(八)基油係含有（a)源自植物之油6〇質量 /〇以上、與(b)多元醇酯4〇質量％以下。相關各成分的詳細 及摻合ΐ等’係如前述。 相關本發明生物分解性潤滑油組成物的「生物分解 性」，就该潤滑油組成物，依照〇ECD試驗規範3〇lc法的微 生物所進行化學物質之分解度試驗，生物分解率係60%以 上' 較佳係70%以上、更佳係80%以上，具有優異的生物分 解性能。又，根據jIS κ 〇1〇2對锵魚的急性毒性試驗，96 小時LCsq值通常S1〇〇mg/L以上，對活體造成的影響較少。 依此，該潤滑油組成物係對環境極具環保的潤滑油。 2〇114201! 卢.. "初77解性濶滑油組成物於40t：之動黏 ；，域從泵效率、配管阻力等觀點，較佳為⑽W/s以 ^2G〜8()mm2/s。減指數係就肋止低溫時黏度 點，較佳一、更佳為_上。流動點通 下' 下’就從低溫流動性的觀點，較佳為-30°C以 ^圭為-抑以下。燃點通常係2坑以上就從難燃 /被點，較佳為峨以上、更佳_0。以上。又， ^值係就從安定性的觀點，較佳編5〜〇.5mgK〇H/g。 因為該潤滑油組成物係如前述具有低流動點，因而當 下=壓啟動油、門緩閉器油、滑動面油的情況，低溫 動陡良好’且因為具有高燃點，因而難 較高，VG32^齡類為日本奸法料雛安全 性優異。 女王 本發明生物分解性潤滑油組成物係生物分解性能優 異，且對生態的影響較少，且難燃性能優異。該潤滑油組 成物係頗適用為例如：在油壓機器、或裝置等的油壓系統 中，使用於動力傳遞、力的控制、緩衝等動作，屬於動力 傳遞流體的油壓啟動油；絲於門（開啟門)上，發揮將已卩 啟的門自動地關閉作用的裝置，諸如關門器、門緩閉器開 門弓器所使用的門賴H油；賦予對各種滑動面所使 滑性的滑動面油等。 ' 實施例 其次，利用實施例，針對本發明進行具體說明，惟本 發明並不因該等例而有受任何限制。 12 201142011 實施例1〜7、及比較例1、2 依照表1所示的量將源自植物之油與多元醇酯進行混 合，而調製基油後，在其中添加表1所示聚甲基丙烯酸酯及 其他添加劑，再針對所獲得的各個潤滑油組成物，依如下 述施行一般性狀、潤滑性能、燃燒性能及生物分解性能的 評價。結果如第1表所示。另外，相關所使用的源自植物之 油、多元醇酯、及聚甲基丙烯酸酯的詳細内容，如下所示。 (源自植物之油） 高油酸含有菜籽油：油酸含量73質量％、碳數16以下 的脂肪酸含量4質量％、碳數18的脂肪酸（油酸除外）含量22 質量％ (多元醇酯）The C-package method J is used to implement the invention. Hereinafter, the present invention will be more specifically described. The biodegradable lubricating oil composition of the present invention is blended with (A) and (B). (A) The base oil contains (a) 60% by mass or more of the plant-derived oil and (b) 40% by mass or less of the polyol ester. (B) Polymethacrylate having a mass average molecular weight of 20,000 to 300,000 is 0.1 to 5% by mass. 201142011 [(A) base oil] The base oil (A) of the biodegradable lubricating oil composition of the present invention contains: (a) 60% by mass or more of plant-derived oil, and (b) polyol G . /〇 below. ((a) Plant-derived oil) (a) Plant-derived oil used in base oil, for example, rapeseed oil, sunflower oil, soybean oil, corn oil, camellia oil, etc., From the viewpoints of biodegradability and heat stability, sunflower oil and rapeseed oil are preferred. Most of the plant-derived oils have a total unsaturation of more than 0.3, but the total unsaturation can be reduced by treatment such as hydrogenation in the purification step. In addition, vegetable reconstitution technology can be used to easily produce vegetable oils with low total unsaturation. In the present invention, it is preferred to use a plant-derived oil containing oleic acid in a high proportion from the viewpoints of biodegradability, heat stability, and the like. For example, it is preferred that the oleic acid is 60% by mass or more, and more preferably 70%. More than % by mass. Such a plant-derived oil containing oleic acid in a high proportion may preferably be exemplified by high oleic canola oil, high oleic rapeseed oil, high oleic acid Caihua oil, high oleic soybean oil, and the like. More preferably, high oleic rapeseed oil can be used. The oil-based base oil derived from the vegetable oil is contained in an amount of 60% by mass or more, and is preferably 70% by mass or more from the viewpoint of biodegradability, and is more preferably 75~ from the viewpoint of biodegradability and thermal stability. 99% by mass. ((b) Polyol ester) (A) The base oil system contains (b) a polyol ester from the viewpoint of improvement in biodegradability and flame retardancy. The polyol ester is not particularly limited. From the above viewpoints, it is preferred to use a polyol or a chain monocarboxylic acid alone or in combination with two groups of 201142011, and a partial ester formed by a usual esterification reaction. Polyol is the main component. When at least a part of the partially esterified polyol-based polyol is esterified, the esterification ratio is preferably from 70 to 90% from the viewpoint of flame retardancy. Here, the "esterification rate" includes an esterified hydroxyl group, and the number of esterified hydroxyl groups is divided by the total number of hydroxyl groups in the polyol ester, and can be calculated according to the following formula. Esterification rate (%) = {(SV-AV) x 100} / (OHV + SV-AV) (SV · · saponification price, AV: acid value, OHV: hydroxyl value) Polyol for use in the formation of polyol ester For example, the polyol having a total carbon number of 3 to 12 and a total hydroxyl number of 3 to 6 may, for example, be glycerin, trihydroxydecylethane, trimethylolpropane or trishydroxydecane. A polyhydric alcohol; or a polyhydric alcohol such as pentaerythritol, di(trimethylol)propane, dipentaerythritol, sorbitol or hexitol, wherein among them, trimethylolpropane, pentaerythritol, and glycerin are preferably used. These polyols may be used alone or in combination of two or more. Further, the chain monocarboxylic acid for producing the polyol ester is, for example, a chain monocarboxylic acid having a total carbon number of 6 to 22, and specific examples thereof include hexanoic acid, heptanoic acid, octanoic acid, citric acid, and citric acid. , Η- Hyun > acid, lauric acid, thirteen-burning acid, meat citrate, pentadecanoic acid, standard acid, seventeen smoldering acid, stearic acid, nineteen succinic acid, arachidic acid, tea tree acid, etc. Chain-saturated fatty acids; linear unsaturated fatty acids such as undecylenic acid, oleic acid, elaidic acid, cetyl acid, sinapic acid, and ebutyric acid; iso-carnitonic acid, iso-palmitic acid, isostearic acid, 2,2-Dimercaptobutyric acid, 2,2-dimercaptovaleric acid, 2,2-dimethyloctanoic acid, 2-ethyl-2,3,3-trimercaptobutyric acid, 2,2, 3,4-tetradecyl valeric acid, 2,5,5-trimethyl-2-tert-butylhexanoic acid, 2,3,3-trimethyl-2-ethylbutyric acid, 2,3- Dimethyl-2-isopropylbutyric acid, 2-ethylhexyl 7 201142011 Acid, 3,5,5·tridecylhexanoic acid, etc. Branched saturated fatty acids, etc. Two or more types may be used in combination. When the polyol is esterified with a chain monocarboxylic acid, the desired polyol ester can be obtained by adjusting the respective packing ratios, and it is preferred to sufficiently remove the light fraction without lowering the ignition point. Further, when the obtained polyol is used for the base oil, the esterification reaction product can be used as it is, or the respective reaction product can be blended to obtain the desired viscosity. In the present invention, the polyol ester used in the base oil has a hydroxyl value of preferably 30 mgKOH/g or more, more preferably 35 mgKOH/g or more. If the value is too low, the total ester portion will increase, and it will easily cause sustained combustion as in the conventional one. Further, the ignition point is preferably 30 or more. The reason is that if the ignition point is too low, the ignition is easy. The molecular weight of the polyol ester used in the present invention is preferably from 600 to 1,500, more preferably from 600 to 1,500. It is 600~i'ooo, especially 65~95〇. If the molecular weight is too low, the viscosity and ignition point will decrease, resulting in flammability. If too high, the viscosity will become too high, resulting in transfer efficiency. The difference between the dynamic viscosity and the right-handed start-up oil can be used within the usable range. Generally, from the viewpoint of pump efficiency and the viscous resistance of the pipe, the dynamic viscosity at a temperature of 4 〇〇 c is preferably 20 to 200 mm 2 . / s, more preferably 20 to l 〇〇 mm 2 / s, particularly preferably 30 to 80 mm 2 / s. For example, the polyol ester in the above viscosity range, preferably using two methacrylic acid and two fatty acids and fatty acids It is a mixture of oleic acid and isostearic acid. In the base oil, the above polyol 100 is contained in an amount of 40% by mass or less based on the total amount of the base oil, and the flame retardancy, biodegradability, and heat stability are observed. 201142011 Point ' is preferably 3〇% by mass or less, more preferably 25% by mass or less, and particularly preferably kb. (%) In the present invention, (B) poly(methacrylic acid vinegar) is used for the purpose of making the base oil difficult to atomize, and not only a monomer of methacrylic acid ester, The copolymer is also covered. From this point of view, the molecular weight of the polydecyl acrylate is 2 〇, 〇〇〇~300,000, preferably 3 〇〇〇〇 to 3 依, depending on the mass average knives. More preferably, it is 35,000 to 200,000. When the mass average molecular weight is smaller than 2 几乎, the method is expected to have the above effect, and conversely, when it is more than 3 〇〇, the 会 is subjected to shearing during use. Deterioration, the effect is also weak, and the viscosity is lowered, so it is best to avoid. In addition, the mass average molecular weight can be determined by a polystyrene-converted mass average molecular weight by GPC (gel permeation chromatography). In the present invention, the polymethacrylate is blended with 5 mil/〇 in the lubricating oil composition. The right amount is less than the blending amount in the range, and the effect of the present invention is reduced. There is a possibility of improving shear deterioration, and it is best to avoid In view of the above, the component (B) is preferably blended in the lubricating oil composition with 〇1 to 4% by mass, more preferably 0.2 to 3.5% by mass, and particularly preferably 3% to 3% by mass. The base oil (A) used in the biodegradable lubricating oil composition of the present invention comprises the above (a) plant-derived oil and the above (b) polyol ester, and the present invention finds the plant-derived oil And the best compound of the polyhydric alcohol ester and the polymethyl sulphuric acid vinegar of the (B) component can provide a lubricating oil composition which combines more excellent flame retardancy and biodegradability. [(C) Other additives] 201142011 The biodegradable moisturizing oil composition of the present invention is preferably used as a lubricating oil additive, preferably as an antioxidant, a dispersing agent, a rust preventive, a metal purifying agent, an oily agent, and an extreme pressure. At least one of an additive, an emulsifier, a fluidity enhancer, and an antifoaming agent is selected. The antioxidant swords used herein may, for example, be 2,6-di-t-butyl-4-methylphenol or 4,4--indenylbis(2,6-di-t-butyl-4- Phenolic antioxidants such as nonylphenol) N-phenyl-indole; -naphthylamine, N-phenyl-call-naphthylamine, amine-based antioxidants such as π-serphin, monooctyldi-n-amine or A sulfur-based antioxidant such as a disulfide disulfide or a benzoxazole; or a dicalcium dithiophosphate. Further, the dispersant may be an ashless dispersant and/or a metal-based detergent. The ashless dispersant may, for example, be a succinic acid succinic acid, a succinic acid sulphite containing 4 fen, and a benzylamine. Examples of the metal-based detergent include a neutral, basic or overbased metal sulfonate, a metal stearate, a metal salicylate, a metal phosphonate, and the like. The metal constituting the metal sulfonate, the metal stinky salt, the metal salicylate, and the metal phosphonate is preferably an alkaline earth metal such as ca or Mg. These ashless dispersants and metal-based detergents may be used alone or in combination of two or more. For example, an alkenyl rust inhibitor may, for example, be an alkenyl succinic acid, a sorbitan oil, a pentaerythritol monooleate or an amine phosphate; and a metal passivator may be a benzotriazole or a benzoate; a derivative of thiazole, triazole, dithioaminomethionine, and the like. The t oily agent may, for example, be an alcohol, a fatty acid or a fatty acid ester. In January, it is possible to form an ester of an aliphatic acid having a carbon number of 6 to 22 and an aliphatic alcohol having a carbon number of 1 to 18, for example. The alcohol is preferably, for example, a 201142011-membered aliphatic saturated or unsaturated alcohol having a carbon number of 8 to 18. The electrode I can be added, for example, a zinc dialkyl dithiophosphate, a dialkyl sulfide compound, a triaryl sulphate, a succinic vinegar or the like. For example, the anti-corrosion #1 system is a poly-oxidation-extension H-poly-Oxide-based alkyl group, a calcination-based st-polyoxy-extension base-based amine-based amine, a poly-oxidized-stretched fatty acid vinegar, and the like. "IL mobility enhancer may, for example, be a polyalkyl acrylate, an alkyl aromatic scent, a vinyl, a vinyl acetate copolymer or the like. Further, the antifoaming agent may, for example, be a methyl polysiloxane or a diethyl phthalate polymer. These additives may be blended in an amount suitable for each purpose, and may be 5.0% by mass or less, preferably 3.0% by mass, based on the total amount of the lubricating oil composition. / 〇 below, more preferably 0.5 to 2.5 mass 〇 / 0. [Biodegradable lubricating oil composition] The biodegradable lubricating oil composition of the present invention is composed of a blend of (A) base oil and (B) a mass average molecular weight of 2 〇〇〇〇 3 3 〇〇〇, 〇〇〇 Methacrylate 〇.1~5 mass ° / ❶ composition. The (VIII) base oil contains (a) a plant-derived oil of 6 〇 mass / 〇 or more, and (b) a polyol ester of 4 〇 mass % or less. The details of the relevant components, blending enthalpy, etc. are as described above. Related to the "biodegradability" of the biodegradable lubricating oil composition of the present invention, the decomposition rate of the chemical substance is determined according to the microorganism of the 〇Cd test method according to the ECD test specification, and the biodegradation rate is 60%. The above is preferably 70% or more, more preferably 80% or more, and has excellent biodegradability. In addition, according to the acute toxicity test of jIS κ 〇1〇2 on carp, the 96-hour LCsq value is usually S1 〇〇 mg/L or more, which has less effect on the living body. Accordingly, the lubricating oil composition is an environmentally friendly lubricating oil for the environment. 2〇114201! Lu.. "The initial 77 solution of the slick oil composition at 40t: the dynamic viscosity; the domain from the pump efficiency, piping resistance, etc., preferably (10) W / s ^ 2G ~ 8 () mm2 /s. The index is reduced to the viscosity point at the low temperature, preferably one or better. From the viewpoint of low-temperature fluidity, the flow point is lower than 'lower', and it is preferably -30 ° C or less. The ignition point is usually more than 2 pits from the flame retardant / point, preferably above 峨, better _0. the above. Further, the value of ^ is from the viewpoint of stability, preferably 5~〇5 mgK〇H/g. Since the lubricating oil composition has a low flow point as described above, when the current = pressure start oil, door shutter oil, sliding surface oil, the low temperature is steep and good, and because of the high ignition point, it is difficult to be high, VG32 The age class is excellent in the safety of Japanese raptors. Queen The biodegradable lubricating oil composition of the present invention has excellent biodegradability, little ecological impact, and excellent flame retardancy. The lubricating oil composition is suitably used, for example, in a hydraulic system such as a hydraulic machine or a device, and is used for power transmission, force control, buffering, etc., and is a hydraulic starting oil belonging to a power transmission fluid; On the door (opening door), a device that automatically closes the opened door, such as a door closer, a door shutter, and a door shutter used by the door opener, and gives the sliding property to various sliding surfaces. Sliding surface oil, etc. EXAMPLES Next, the present invention will be specifically described by way of examples, but the present invention is not limited by the examples. 12 201142011 Examples 1 to 7 and Comparative Examples 1 and 2 The plant-derived oil and the polyol ester were mixed in an amount shown in Table 1, and after the base oil was prepared, the polymethyl group shown in Table 1 was added thereto. Acrylates and other additives are evaluated for general properties, lubricating properties, combustion properties, and biodegradability as described below for each of the obtained lubricating oil compositions. The results are shown in Table 1. Further, the details of the plant-derived oil, polyol ester, and polymethacrylate used in the related art are as follows. (plant-derived oil) High oleic acid contains rapeseed oil: 73% by mass of oleic acid, 4% by mass of fatty acid having a carbon number of 16 or less, and 22% by mass of fatty acid (excluding oleic acid) having a carbon number of 18 (polyol) ester)
• TMP(三羥甲基丙烷）異硬脂酸（油酸)部分酯：40°C動 黏度60.0mm2/s、100°C動黏度l〇.〇mm2/s、依指示劑法測 得的酸值 0.20mgKOH/g、羥值 40.0mgKOH/g、密度（15°C) 0.925g/cm3、燃點（克氏開杯式）306°C• TMP (trimethylolpropane) isostearic acid (oleic acid) partial ester: 40 ° C dynamic viscosity 60.0 mm 2 / s, 100 ° C dynamic viscosity l 〇 〇 mm 2 / s, measured by the indicator method Acid value 0.20mgKOH/g, hydroxyl value 40.0mgKOH/g, density (15°C) 0.925g/cm3, ignition point (Krebs open cup type) 306°C
• PE飽和脂肪酸酯：40°C動黏度33.5mm2/s、100°C動 黏度6.00mm2/s、依電位差法測得的酸值0.04mgKOH/g、 經值 2_OmgKOH/g、密度（15°C) 〇.961g/cm3、燃點（克氏開 杯式）280°C• PE saturated fatty acid ester: 40°C dynamic viscosity 33.5mm2/s, 100°C dynamic viscosity 6.00mm2/s, acid value 0.04mgKOH/g measured by potential difference method, value 2_OmgKOH/g, density (15°) C) 961.961g/cm3, ignition point (Krebs open cup type) 280°C
.TMP三油酸S旨：40°C 動黏度 49.45mm2/s、100°C 動 黏度9.81mm2/s、依電位差法測得的酸值0.99mgKOH/g、 羥值 3.0mgKOH/g、密度（15°C) 〇.918g/cm3、燃點（克氏開 杯式）320°C 13 201142011 (聚甲基丙烯酸酯） • PMA(l):丙烯酸系共聚物、100 °C動黏度 835mm2/s、依指示劑法測得的酸值0.05mgKOH/g、密度（15 °C) 〇.915g/cm3、質量平均分子量(Mw) 140,000 • PMA(2):丙烯酸系共聚物、100 °C動黏度 852mm2/s、依指示劑法測得的酸值0.05mgKOH/g、密度（15 °〇 0.941g/cm3 ' Mw 37,000 • PMA(3):分散型丙烯酸系共聚物、100°C動黏度 1190mm2/s、依指示劑法測得的酸值0.26mgKOH/g、密度 (15°C) 0.906g/cm3 ' Mw 79,000 .PMA(4):甲基丙烯酸烷基酯系共聚物、100°C動黏 度 1500mm2/s、密度（15°C) 0.933g/cm3、Mw 35,000 (其他添加劑） .流動點提升劑：聚曱基丙烯酸烷基酯、100°C動黏度 364.3mm2/s、依指示劑法測得的酸值0.04mgKOH/g、密度 (15°C) 〇.911g/cm3 [性狀及性能評價] (1) 動黏度 根據JISK 2283進行測定。 (2) 酸值 根據JIS K 2501所規定的「潤滑油中和試驗方法」，利 用電位差法進行測定。 (3) 羥值 根據JIS K 0070 ’依照比α定-氯乙醯化法進行測定。 14 201142011 (4)燃點 根據JISK 2274，利用克氏開杯式(c〇c)試驗器進行測 定。 、 (5) 耐腐触性 依照JIS K 2513「石油製品銅板腐蝕試驗方法」，利用 忒驗溫度100。(：、試驗時間3小時、及試驗管法，施行腐蝕 11的式驗’依照「銅板腐#標準」觀察銅板的變色狀態， 並依細分符號la〜4c評價腐餘性。另外，細分符號的數字越 小，表示腐蝕性越小，英字母順序係表示腐蝕性變大的 序。 貝 (6) 防銹試驗 根據JISK 2510, 一邊將試料與水攪拌混合，_邊保持 於6〇c中，將鋼製圓棒的試驗片浸潰於其中，觀察經μ小 時後的試驗片有無生銹情形。 (7) 耐荷重試驗 根據ASTM D 2783 ,依照旋轉數ijoorpm、室溫的條 件實％。由最大無黏著負荷(LNL)與溶接負荷(Wl)，求取 荷重磨損餘(LWI)。此數錢*，衫韻紐越良好。 (8) 燃燒性試驗 利用燃燒器使依高壓進行喷霧的試料油著火，經1〇秒 的預備燃燒後，移除燃燒㈣火苗，然後測定持續燃燒時 ^並基作難燃性此的指標。另外，針對達3 〇秒以上持續 燃燒者，在此時點便中止試驗，且判定為「具持續燃燒性」。 試驗條件係設為··噴霧壓力：70kg/cm2G(氮加壓）試料油溫： 15 201142011 60°C、喷嘴：Monarch 60°PL2.25(空心錐式）、喷嘴式燃燒 器間：10cm、預備燃燒時間：10秒、熱壓鍋容量：1公升 (9) 生物分解性試驗 根據修正ΜΙΉ試驗法「OECD301C」測定生物分解率。 另外，1998年7月修訂的生態標章認定基準，就上述生物分 解率係要求達60%以上。 (10) 生物分解性•毒性試驗 根據JISK0102,試驗魚係使用鏘魚，測定經96小時後 的半數致死濃度LC50值。另外，1998年7月修訂的生態標章 認定基準，就上述LC5。值係要求達100mg/L以上。 16 201142011 I< 比較例 (N 1 1 31.50 1 | 66.25 1 1 | 0.50 1 1 1 1 0.10 0.05 1 ! 0.10 100.00 44.77 8.675 卜 0.67 300 Klb) 無生鎮 VO 30< 100< 97.15 1 1 1 1.20 1 1 1 0.10 0.05 1 1 100.00 68,91 [11.520 | CN 0.32 342 l(lb) 無生銹 寸 vo 100< 實施例 卜 19.30 1 1 77.05 2.00 1 1 1 | 0.10 1 0.05 1 1 1 100.00 50.08 | 10.450 1 204 0.15 On <N Klb) 無生銹 275 CN 1 1 13.00 1 1 83.45 1 1 1 | 0.10 | 0.05 1 0.30 ] 0.10 100.00 42.04 \ 9.224 1 1 210 0.12 320 Klb) 無生銹 212 m 00 100< 19.40 1 1 77.05 1.00 1 0.50 1 | 0.10 | 1 0.05 1 1 0.30 1 1 o.io 1 100.00 47.60 9.953 1 202 o 318 一 無生銹 229 寸 1 1 寸 19.30 1 1 76.65 1 2.00 J 1 1 0.10 1 0.05 1 1 0.30 1 1 0.10 1 100.00 | 46.88 | | 9.748 | 1 200 0.12 310 Klb) 無生鎮 〇〇 (N 〇〇 1 1 ΓΛ 19.10 1 1 75.85 3.00 1 1 1 0.10 0.05 1 0.30 1 0.10 100.00 54.01 | 11.300 | 1 209 0.13 寸 無生鎮 227 1 1 (N 3.00 1 1 92.95 2.00 1 I o.io | 0.05 1 0.30 1 0.10 100.00 | 46.11 | 10.050 1 213 0.11 314 l(lb) 無生銹 寸 Λ (Ν 1 1 — 19.50 1 77.45 〇 1 1 1 I 0.10 1 1 0.05 1 1 0.30 1 0.10 100.00 I 45.56 1 I 9.536 I 200 0.15 314 無生銹 233 Λ (Ν oo 100< wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% (Λ B E "ε ε 1 X o bJO B P 1 1 Z sec 1 TMP異硬脂酸（油酸）部分酯 PE飽和脂肪酸酯 TMP三油酸酯 高油酸含有菜軒油 1 PMA(l) (N < cu PMA(3) PMA(4) 苯基α -备胺 oo <N z CQ 匕 齊 a U 1，2,3-苯并三唑 流動點提升劑 矽系消泡劑(信越化學公司製） P 〇 .¾¾11 ηβ>η r-N P o δ 黏度指數 酸值 燃點 耐腐姓性 防鎮試驗 5 燃燒性試驗 生物分解性試驗 生物分解性•毒性試驗 (A)基油 (B)PMA 其他添加劑 合計 一般性狀 潤滑性狀 17 201142011 產業上之可利用性 本發明的生物分解性潤滑油組成物，因為兼顧優異難 燃性能與生物分解性能，因而頗適用為例如：油壓機器'、 裝置等的油壓线中之動力傳遞、或力的控制、緩衝等動 作所使用屬於動力傳遞流體的啟動油、或關門器所使用的 門緩閉器油等。 C圖式簡單說明3 (無） 【主要元件符號說明】 (無） 18.TMP trioleic acid S: 40 ° C dynamic viscosity 49.45mm2 / s, 100 ° C dynamic viscosity 9.81mm2 / s, acid value measured by potentiometric method 0.99mgKOH / g, hydroxyl value 3.0mgKOH / g, density ( 15°C) 918.918g/cm3, ignition point (Krebs open cup type) 320°C 13 201142011 (polymethacrylate) • PMA(l): acrylic copolymer, 100 °C dynamic viscosity 835mm2/s, The acid value measured by the indicator method is 0.05 mgKOH/g, density (15 °C) 915.915 g/cm3, mass average molecular weight (Mw) 140,000 • PMA (2): acrylic copolymer, 100 °C dynamic viscosity 852 mm2 /s, acid value measured by the indicator method: 0.05 mg KOH/g, density (15 ° 〇 0.941 g/cm 3 ' Mw 37,000 • PMA (3): dispersed acrylic copolymer, 100 ° C dynamic viscosity 1190 mm 2 / s The acid value measured by the indicator method is 0.26 mgKOH/g, and the density (15 ° C) is 0.906 g/cm 3 ' Mw 79,000 . PMA (4): alkyl methacrylate copolymer, 100 ° C dynamic viscosity 1500 mm 2 / s, density (15 ° C) 0.933g / cm3, Mw 35,000 (other additives). Flow point enhancer: polyalkyl methacrylate, 100 ° C dynamic viscosity 364.3mm2 / s, measured by the indicator method Acid value 0.04mgKOH/g, density (15°C) .911g/cm3 [Characteristics and performance evaluation] (1) The dynamic viscosity is measured in accordance with JIS K 2283. (2) The acid value is measured by the potential difference method in accordance with the "Lubricating Oil Neutralization Test Method" prescribed in JIS K 2501. The hydroxyl value is measured according to JIS K 0070 'in accordance with the α-chloroacetylation method. 14 201142011 (4) The ignition point is measured according to JIS K 2274 using a Kjelda open cup type (c〇c) tester. Corrosion resistance According to JIS K 2513 "Test method for corrosion of copper products in petroleum products", use the test temperature of 100. (:, test time 3 hours, and test tube method, perform the test of corrosion 11) according to "copper plate rot # standard Observe the discoloration state of the copper plate, and evaluate the rot residual according to the subdivision symbols la~4c. In addition, the smaller the number of the subdivision symbol, the smaller the corrosivity, and the English alphabetical order indicates the order of corrosiveness. In the rust prevention test, the test piece and the water were stirred and mixed in accordance with JIS K 2510, and the test piece of the steel round bar was immersed therein, and the test piece after the lapse of μ hour was observed for rust. (7) Load resistance test according to ASTM D 2783 The number of rotations is ijoorpm, and the condition of room temperature is %. From the maximum non-adhesive load (LNL) and the fusion load (Wl), the load wear residual (LWI) is obtained. This money*, the better the shirt rhyme. (8) Flammability test The sample oil sprayed by high pressure is ignited by a burner. After a preliminary combustion of 1 second, the combustion (4) flame is removed, and then the index of the flame retardancy is measured. In addition, for those who continue to burn for more than 3 sec., the test is stopped at this point, and it is judged as "continuous flammability". The test conditions were set to · spray pressure: 70 kg/cm2G (nitrogen pressurization) sample oil temperature: 15 201142011 60 ° C, nozzle: Monarch 60 ° PL 2.25 (open cone), nozzle burner: 10 cm, Preparation burn time: 10 seconds, hot press capacity: 1 liter (9) Biodegradability test The biodegradation rate was measured according to the modified ΜΙΉ test method "OECD301C". In addition, the ecological labeling standard revised in July 1998 requires more than 60% of the above biodegradation rate. (10) Biodegradability and toxicity test According to JIS K0102, the test fish was used for squid, and the LC50 value of the median lethal concentration after 96 hours was measured. In addition, the eco-marker certification benchmark revised in July 1998 is the above LC5. The value is required to be 100 mg/L or more. 16 201142011 I< Comparative Example (N 1 1 31.50 1 | 66.25 1 1 | 0.50 1 1 1 1 0.10 0.05 1 ! 0.10 100.00 44.77 8.675 卜 0.67 300 Klb) 无生镇 VO 30<100< 97.15 1 1 1 1.20 1 1 1 0.10 0.05 1 1 100.00 68,91 [11.520 | CN 0.32 342 l(lb) No rusting vo 100<Examples 19.30 1 1 77.05 2.00 1 1 1 | 0.10 1 0.05 1 1 1 100.00 50.08 | 10.450 1 204 0.15 On <N Klb) No rust 275 CN 1 1 13.00 1 1 83.45 1 1 1 | 0.10 | 0.05 1 0.30 ] 0.10 100.00 42.04 \ 9.224 1 1 210 0.12 320 Klb) No rust 212 m 00 100< 19.40 1 1 77.05 1.00 1 0.50 1 | 0.10 | 1 0.05 1 1 0.30 1 1 o.io 1 100.00 47.60 9.953 1 202 o 318 No rust 229 inches 1 1 inch 19.30 1 1 76.65 1 2.00 J 1 1 0.10 1 0.05 1 1 0.30 1 1 0.10 1 100.00 | 46.88 | | 9.748 | 1 200 0.12 310 Klb) No life 〇〇 (N 〇〇1 1 ΓΛ 19.10 1 1 75.85 3.00 1 1 1 0.10 0.05 1 0.30 1 0.10 100.00 54.01 | 11.300 | 1 209 0.13 inch Wusheng Town 227 1 1 (N 3.00 1 1 92.95 2.00 1 I o.io | 0.05 1 0.30 1 0.10 100.00 | 46.11 | 10.050 1 2 13 0.11 314 l(lb) No rusting Λ (Ν 1 1 — 19.50 1 77.45 〇1 1 1 I 0.10 1 1 0.05 1 1 0.30 1 0.10 100.00 I 45.56 1 I 9.536 I 200 0.15 314 No rust 233 Λ ( Ν oo 100< wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% wt.% (Λ BE "ε ε 1 X o bJO BP 1 1 Z sec 1 TMP isostearic acid (oleic acid) partial ester PE saturated fatty acid ester TMP trioleate high oleic acid containing vegetable Xuan oil 1 PMA (l) (N < cu PMA ( 3) PMA(4) Phenyl α-preparative amine oo <N z CQ 匕 Qi a U 1,2,3-benzotriazole pour point lifting agent 矽 system defoamer (manufactured by Shin-Etsu Chemical Co., Ltd.) P 〇. 3⁄43⁄411 ηβ>η rN P o δ viscosity index acid value ignition resistance anti-corrosion surname anti-township test 5 flammability test biodegradability test biodegradability • toxicity test (A) base oil (B) PMA other additives total general traits lubrication traits 17 201142011 INDUSTRIAL APPLICABILITY The biodegradable lubricating oil composition of the present invention is suitable for use in hydraulic lines such as hydraulic equipments and devices because it has excellent flame retardancy and biodegradability. Transmitting the control force, or force, the buffering action door belonging to the power transmitting fluids slow start oil, or used by the closing shutter oil. Simple description of C pattern 3 (none) [Description of main component symbols] (none) 18