JP6141983B2 - ルーズコア星形ポリマーおよびその潤滑剤組成物 - Google Patents
ルーズコア星形ポリマーおよびその潤滑剤組成物 Download PDFInfo
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- JP6141983B2 JP6141983B2 JP2015528455A JP2015528455A JP6141983B2 JP 6141983 B2 JP6141983 B2 JP 6141983B2 JP 2015528455 A JP2015528455 A JP 2015528455A JP 2015528455 A JP2015528455 A JP 2015528455A JP 6141983 B2 JP6141983 B2 JP 6141983B2
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- 230000008569 process Effects 0.000 claims description 20
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- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 4
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 4
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
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- INQDDHNZXOAFFD-UHFFFAOYSA-N 2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOC(=O)C=C INQDDHNZXOAFFD-UHFFFAOYSA-N 0.000 description 2
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- 239000003345 natural gas Substances 0.000 description 1
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- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 1
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- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
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- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- MBYLVOKEDDQJDY-UHFFFAOYSA-N tris(2-aminoethyl)amine Chemical compound NCCN(CCN)CCN MBYLVOKEDDQJDY-UHFFFAOYSA-N 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- UEHPDKPOOXUPDC-UHFFFAOYSA-L zinc;(2-dodecylphenoxy)-(2-dodecylphenyl)sulfanyl-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCCCCCCCC1=CC=CC=C1OP([O-])(=S)SC1=CC=CC=C1CCCCCCCCCCCC.CCCCCCCCCCCCC1=CC=CC=C1OP([O-])(=S)SC1=CC=CC=C1CCCCCCCCCCCC UEHPDKPOOXUPDC-UHFFFAOYSA-L 0.000 description 1
- DVOXUQOFLMNRPW-UHFFFAOYSA-L zinc;(2-heptylphenoxy)-(2-heptylphenyl)sulfanyl-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCCC1=CC=CC=C1OP([O-])(=S)SC1=CC=CC=C1CCCCCCC.CCCCCCCC1=CC=CC=C1OP([O-])(=S)SC1=CC=CC=C1CCCCCCC DVOXUQOFLMNRPW-UHFFFAOYSA-L 0.000 description 1
- WNBGUYXVNNDNEH-UHFFFAOYSA-L zinc;2-methylpropoxy-(2-methylpropylsulfanyl)-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CC(C)COP([O-])(=S)SCC(C)C.CC(C)COP([O-])(=S)SCC(C)C WNBGUYXVNNDNEH-UHFFFAOYSA-L 0.000 description 1
- OECQDNKCDGGPFY-UHFFFAOYSA-L zinc;bis(2-ethylhexoxy)-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].CCCCC(CC)COP([S-])(=S)OCC(CC)CCCC.CCCCC(CC)COP([S-])(=S)OCC(CC)CCCC OECQDNKCDGGPFY-UHFFFAOYSA-L 0.000 description 1
- VYEHCXHIPZIYIJ-UHFFFAOYSA-L zinc;dodecoxy-dodecylsulfanyl-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCCCCCCCOP([O-])(=S)SCCCCCCCCCCCC.CCCCCCCCCCCCOP([O-])(=S)SCCCCCCCCCCCC VYEHCXHIPZIYIJ-UHFFFAOYSA-L 0.000 description 1
- CWARVPYFLMQZPG-UHFFFAOYSA-L zinc;heptoxy-heptylsulfanyl-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCCOP([O-])(=S)SCCCCCCC.CCCCCCCOP([O-])(=S)SCCCCCCC CWARVPYFLMQZPG-UHFFFAOYSA-L 0.000 description 1
- SMHSUQSYYIPZSI-UHFFFAOYSA-L zinc;nonoxy-nonylsulfanyl-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCCCCOP([O-])(=S)SCCCCCCCCC.CCCCCCCCCOP([O-])(=S)SCCCCCCCCC SMHSUQSYYIPZSI-UHFFFAOYSA-L 0.000 description 1
- GBEDXBRGRSPHRI-UHFFFAOYSA-L zinc;octoxy-octylsulfanyl-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCCCOP([O-])(=S)SCCCCCCCC.CCCCCCCCOP([O-])(=S)SCCCCCCCC GBEDXBRGRSPHRI-UHFFFAOYSA-L 0.000 description 1
- HHMFJIHYTYQNJP-UHFFFAOYSA-L zinc;oxido-pentoxy-pentylsulfanyl-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCOP([O-])(=S)SCCCCC.CCCCCOP([O-])(=S)SCCCCC HHMFJIHYTYQNJP-UHFFFAOYSA-L 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1802—C2-(meth)acrylate, e.g. ethyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
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Description
本発明は、1つまたは複数の多官能性モノマーおよび1つまたは複数の単官能性モノマーの混合物から誘導されるポリマーの架橋ネットワークで構成されるコアを有する星形ポリマーに関し、星形ポリマーは1つまたは複数の単官能性モノマーの混合物から誘導されるポリマーで作製されるアームを有し、星はコアに結合している平均で少なくとも3本のアームを含有する。本発明は、潤滑粘度の油および記載される星形ポリマーを含有する潤滑組成物、ならびに記載される潤滑組成物で機械装置を潤滑する方法にさらに関する。
星形ポリマーを含む粘度調整剤は、粘度指数性能、ブルックフィールド粘度に記載される低温性能、ならびに40℃および100℃での動粘性係数性能によって示されるような高温性能を提供するための、潤滑剤の分野で公知である。粘度調整剤の性能は、油圧系、ドライブライン系および内燃機関を含む多種多様な機械装置において観察されている。星形ポリマーは、いくつかの特許出願において詳細に記載されている。
向上した粘度指数および/または低温特性を提供することができる粘度調整添加剤の必要性が引き続いてある。より低い全体的処理レートで既存の添加剤と同等の性能、または類似した利点を提供することができる、より効率的な添加剤が、添加剤業界で非常に望ましい。
本発明は、粘度指数、燃料経済、低温粘度測定(low temperature viscometrics)、油溶性、保存安定性、剪断安定性またはなんらかのその組合せの領域で、潤滑剤の向上した性能を提供する潤滑剤添加剤として使用することができる、新しいクラスの星形ポリマーを扱う。向上した性能には、直接試験ならびに既存の技術および添加剤との相対比較でのより優れた結果および成果だけでなく、より低い全体的処理レートで本発明によって達成される、同等の結果および成果を含めることもできる。言い換えると、一部の実施形態では、本発明の添加剤は既存の技術より効率を高めることができ、潤滑剤組成物がわずかな量の添加剤で類似した性能を得ることを可能にし、技術の非常に望ましい進歩を表す。
本発明は、上で開示される潤滑組成物、潤滑方法、および上で開示される星形ポリマーの使用を提供する。
星形ポリマー
多官能性モノマー。
単官能性モノマー。
追加の特色。
式中、Qは水素またはメチルであってもよく、一実施形態ではQはメチルであり;ZはN−R基またはO(酸素)であってもよく、Rは水素または炭素原子数1から4のアルキル基であってもよく;各Riiは独立して水素または炭素原子数1〜8もしくは1〜4のヒドロカルビル基(一般的にアルキル)であってもよく;各Riは独立して水素または炭素原子数1〜2のヒドロカルビル基(一般的にアルキル)であってもよく、一般的には水素であり;gは、1から6または1から3の整数であってもよい。一部の実施形態では、そのような化合物は重合では使用しない。
潤滑粘度の油
他の性能添加剤
工業的応用
(実施例1)−比較例。
(実施例2)−本発明の実施例。
(実施例3)−本発明の実施例。
(実施例4)−本発明の実施例。
(実施例5)−本発明の実施例
(実施例6)
本発明の好ましい実施形態によれば、例えば、以下が提供される。
(項1)
少なくとも3本のアームに結合しているコアを含む星形ポリマーであって、
前記星形ポリマーの前記コアが、
(a)1つまたは複数の多官能性モノマー;および
(b)1つまたは複数の単官能性モノマー;
を含むモノマーの混合物から誘導されるポリマーの架橋ネットワークを含み、前記星形ポリマーの前記アームが、(i)1つまたは複数の単官能性モノマーから作製されるポリマーアーム前駆体を含むポリマー混合物から誘導され、前記前駆体が少なくとも1つの反応性末端基を含む、星形ポリマー。
(項2)
前記星形ポリマーの前記アームが、(i)1つまたは複数の単官能性モノマー;(ii)連鎖移動剤;および(iii)開始剤の混合物から誘導されるポリマーを含む、上記項1に記載の星形ポリマー。
(項3)
構成成分(a)の前記多官能性モノマーが、アルキレングリコールジメタクリレート、トリアルキロールアルカントリメタクリレート、ジアルカンジオールジメタクリレートまたはそれらの組合せを含み、前記アルキル基、前記アルキロール基、前記アルキレン基および前記アルカン基が1から20個の炭素原子を各々独立して含有し、
構成成分(b)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有する、上記項1に記載の組成物。
(項4)
構成成分(i)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有し、
構成成分(ii)の前記連鎖移動剤が、ラジカル重合を開始するのに適するラジカル種を形成することが可能な少なくとも1つの基を含む、RAFT連鎖移動剤を含み、
構成成分(iii)の前記開始剤がペルオキシ開始剤またはAIBNを含む、上記項2に記載の組成物。
(項5)
構成成分(a)が前記星形ポリマーの0.1〜35重量パーセントを構成し;
構成成分(b)が前記星形ポリマーの0.9〜35重量パーセントを構成し;
構成成分(i)が前記星形ポリマーの30〜99重量パーセントを構成する、
上記項1に記載の組成物。
(項6)
潤滑粘度の油および星形ポリマーを含む潤滑剤組成物であって、前記星形ポリマーが少なくとも3本のアームに結合しているコアを含み、
前記星形ポリマーの前記コアが、
(a)1つまたは複数の多官能性モノマー;および
(b)1つまたは複数の単官能性モノマー;
を含むモノマーの混合物から誘導されるポリマーの架橋ネットワークを含み、
前記星形ポリマーの前記アームが、(i)1つまたは複数の単官能性モノマーから作製されるポリマーアーム前駆体を含むポリマー混合物から誘導され、前記前駆体が少なくとも1つの反応性末端基を含む、潤滑剤組成物。
(項7)
前記星形ポリマーの前記アームが、(i)1つまたは複数の単官能性モノマー;(ii)連鎖移動剤;および(iii)開始剤の混合物から誘導されるポリマーを含む、上記項1に記載の星形ポリマー。
(項8)
構成成分(a)の前記多官能性モノマーが、アルキレングリコールジメタクリレート、トリアルキロールアルカントリメタクリレート、ジアルカンジオールジメタクリレートまたはそれらの組合せを含み、前記アルキル基、前記アルキロール基、前記アルキレン基および前記アルカン基が1から20個の炭素原子を各々独立して含有し、
構成成分(b)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有する、上記項6に記載の組成物。
(項9)
構成成分(i)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有し、
構成成分(ii)の前記連鎖移動剤が、ラジカル重合を開始するのに適するラジカル種を形成することが可能な少なくとも1つの基を含む、トリチオカーボネートを含み、
構成成分(iii)の前記開始剤がペルオキシ開始剤またはAIBNを含む、上記項7に記載の組成物。
(項10)
前記潤滑粘度の油が前記潤滑剤組成物の1から99重量パーセントを構成し、前記星形ポリマーが前記潤滑剤組成物の99から1重量パーセントを構成し、
構成成分(a)が前記星形ポリマーの0.1〜35重量パーセントを構成し;
構成成分(b)が前記星形ポリマーの0.9〜35重量パーセントを構成し;
構成成分(i)が前記星形ポリマーの30〜99重量パーセントを構成する、
上記項6に記載の組成物。
(項11)
星形ポリマーを作製する方法であって、
I.45℃以上の温度で(i)1つまたは複数の単官能性モノマーを反応させるステップであって、
ステップIの前記反応が、前記星形ポリマーのアームを形成する前駆体であるポリマーを与え、前記前駆体が少なくとも1つの反応性末端基を含むステップと、
II.45℃以上の温度で、
(a)1つまたは複数の多官能性モノマー;
(b)1つまたは複数の単官能性モノマー;および
(c)ステップIの反応生成物;
を反応させるステップであって、ステップIIの前記反応が少なくとも3本のアームに結合しているコアを含む星形ポリマーを与え、前記星形ポリマーの前記コアがモノマー(a)および(b)の混合物から誘導されるポリマーの架橋ネットワークを含むステップとを含む、方法。
(項12)
ステップIが、45℃以上の温度で、
(i)1つまたは複数の単官能性モノマー;
(ii)連鎖移動剤;および
(iii)開始剤;
を反応させることを含む、上記項11に記載の方法。
(項13)
構成成分(a)の前記多官能性モノマーが、アルキレングリコールジメタクリレート、トリアルキロールアルカントリメタクリレート、ジアルカンジオールジメタクリレートまたはそれらの組合せを含み、前記アルキル基、前記アルキロール基、前記アルキレン基および前記アルカン基が1から20個の炭素原子を各々独立して含有し、
構成成分(b)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有する、上記項11に記載の方法。
(項14)
構成成分(i)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有し、
構成成分(ii)の前記連鎖移動剤が、ラジカル重合を開始するのに適するラジカル種を形成することが可能な少なくとも1つの基を含む、トリチオカーボネートを含み、
構成成分(iii)の前記開始剤がペルオキシ開始剤またはAIBNを含む、上記項12に記載の方法。
(項15)
構成成分(a)が前記星形ポリマーの0.1〜35重量パーセントを構成し;
構成成分(b)が前記星形ポリマーの0.9〜35重量パーセントを構成し;
構成成分(i)が前記星形ポリマーの30〜99重量パーセントを構成する、
上記項11に記載の方法。
(項16)
上記項6に記載の潤滑組成物を機械装置に供給することを含む、機械装置を潤滑する方法であって、前記機械装置が、内燃機関、油圧装置、手動もしくは自動変速装置、産業用ギヤ、自動車用ギヤ(もしくは車軸)または農用トラクターである方法。
(項17)
コア部分および3本以上のアームを有する星形ポリマーを調製する方法であって、
(a)制御されたフリーラジカル連鎖移動剤の存在下で少なくとも1つのアルキルメタクリレートを重合させ、反応性末端基を有するポリマー鎖を調製するステップであって、前記ポリマー鎖が前記星形ポリマーの前記アームを形成する前駆体であるステップと;その後
(b)ステップ(a)の生成物を、
(i)少なくとも1つの多官能性メタクリレートモノマーまたは多官能性アクリレートモノマーと反応させ、ただし、前記多官能性モノマーが多官能性のメタクリレートモノマーであるならば、前記生成物を
(ii)少なくとも1つのアルキルアクリレートモノマー
とさらに反応させるステップと;を含み、それによって、ステップ(b)の前記反応が、多数のアームに結合しているコアを含む星形ポリマーを提供し、前記コアが、モノマー(i)、および存在する場合はモノマー(ii)から誘導されるポリマーの架橋ネットワークを含む方法。
(項18)
上記項17に記載のプロセスによって調製されるか、または調製することが可能である、星形ポリマー。
(項19)
コア部分および3本以上のアームを有する星形ポリマーであって、
(a)前記アームが少なくとも1つのアルキルメタクリレートモノマーを含むポリマーを含み、
(b)前記コアが、
(i)少なくとも1つの多官能性メタクリレートモノマー、および
(ii)少なくとも1つのアルキルアクリレートモノマー
を含む架橋ポリマー部分を含む星形ポリマー。
(項20)
潤滑粘度の油、および約0.1〜約15重量パーセントの上記項19に記載の星形ポリマーを含む潤滑組成物。
Claims (17)
- 少なくとも3本のアームに結合しているコアを含む星形ポリマーであって、
前記星形ポリマーの前記コアが、
(a)1つまたは複数の多官能性モノマーであって、ここで、前記多官能性モノマーが、アルキレングリコールジメタクリレート、トリアルキロールアルカントリメタクリレート、ジアルカンジオールジメタクリレートまたはそれらの組合せを含み、ここで、前記アルキル基、アルキロール基、アルキレン基およびアルカン基が1から20個の炭素原子を各々独立して含有する、多官能性モノマー;および
(b)1つまたは複数の単官能性モノマーであって、ここで、前記単官能性モノマーはアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有する、単官能性モノマー;
を含むモノマーの混合物から誘導されるポリマーの架橋ネットワークを含み、
前記星形ポリマーの前記アームが、(i)1つまたは複数の単官能性モノマー;(ii)連鎖移動剤;および(iii)開始剤から作製されるポリマーアーム前駆体を含むポリマー混合物から誘導され、前記前駆体が少なくとも1つの反応性末端基を含む、星形ポリマー。 - 構成成分(i)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有し、
構成成分(ii)の前記連鎖移動剤が、ラジカル重合を開始するのに適するラジカル種を形成することが可能な少なくとも1つの基を含む、RAFT連鎖移動剤を含み、
構成成分(iii)の前記開始剤がペルオキシ開始剤またはAIBNを含む、請求項1に記載の星形ポリマー。 - 構成成分(a)が前記星形ポリマーの0.1〜35重量パーセントを構成し;
構成成分(b)が前記星形ポリマーの0.9〜35重量パーセントを構成し;
構成成分(i)が前記星形ポリマーの30〜99重量パーセントを構成する、
請求項1に記載の星形ポリマー。 - 潤滑粘度の油および星形ポリマーを含む潤滑剤組成物であって、前記星形ポリマーが少なくとも3本のアームに結合しているコアを含み、
前記星形ポリマーの前記コアが、
(a)1つまたは複数の多官能性モノマー;および
(b)1つまたは複数の単官能性モノマー;
を含むモノマーの混合物から誘導されるポリマーの架橋ネットワークを含み、
前記星形ポリマーの前記アームが、(i)1つまたは複数の単官能性モノマーから作製されるポリマーアーム前駆体を含むポリマー混合物から誘導され、前記前駆体が少なくとも1つの反応性末端基を含む、潤滑剤組成物。 - 前記星形ポリマーの前記アームが、(i)1つまたは複数の単官能性モノマー;(ii)連鎖移動剤;および(iii)開始剤の混合物から誘導されるポリマーを含む、請求項4に記載の組成物。
- 構成成分(a)の前記多官能性モノマーが、アルキレングリコールジメタクリレート、トリアルキロールアルカントリメタクリレート、ジアルカンジオールジメタクリレートまたはそれらの組合せを含み、前記アルキル基、前記アルキロール基、前記アルキレン基および前記アルカン基が1から20個の炭素原子を各々独立して含有し、
構成成分(b)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有する、請求項4に記載の組成物。 - 構成成分(i)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有し、
構成成分(ii)の前記連鎖移動剤が、ラジカル重合を開始するのに適するラジカル種を形成することが可能な少なくとも1つの基を含む、トリチオカーボネートを含み、
構成成分(iii)の前記開始剤がペルオキシ開始剤またはAIBNを含む、請求項5に記載の組成物。 - 前記潤滑粘度の油が前記潤滑剤組成物の1から99重量パーセントを構成し、前記星形ポリマーが前記潤滑剤組成物の99から1重量パーセントを構成し、
構成成分(a)が前記星形ポリマーの0.1〜35重量パーセントを構成し;
構成成分(b)が前記星形ポリマーの0.9〜35重量パーセントを構成し;
構成成分(i)が前記星形ポリマーの30〜99重量パーセントを構成する、
請求項4に記載の組成物。 - 星形ポリマーを作製する方法であって、
I.45℃以上の温度で(i)1つまたは複数の単官能性モノマー;(ii)連鎖移動剤;および(iii)開始剤を反応させるステップであって、
ステップIの前記反応が、前記星形ポリマーのアームを形成する前駆体であるポリマーを与え、前記前駆体が少なくとも1つの反応性末端基を含むステップと、
II.45℃以上の温度で、
(a)1つまたは複数の多官能性モノマー;
(b)1つまたは複数の単官能性モノマー;および
(c)ステップIの反応生成物;
を反応させるステップであって、ステップIIの前記反応が少なくとも3本のアームに結合しているコアを含む星形ポリマーを与え、前記星形ポリマーの前記コアがモノマー(a)および(b)の混合物から誘導されるポリマーの架橋ネットワークを含むステップとを含む、方法。 - 構成成分(a)の前記多官能性モノマーが、アルキレングリコールジメタクリレート、トリアルキロールアルカントリメタクリレート、ジアルカンジオールジメタクリレートまたはそれらの組合せを含み、前記アルキル基、前記アルキロール基、前記アルキレン基および前記アルカン基が1から20個の炭素原子を各々独立して含有し、
構成成分(b)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有する、請求項9に記載の方法。 - 構成成分(i)の前記単官能性モノマーがアルキルメタクリレートモノマーを含み、前記アルキル基が1から20個の炭素原子を含有し、
構成成分(ii)の前記連鎖移動剤が、ラジカル重合を開始するのに適するラジカル種を形成することが可能な少なくとも1つの基を含む、トリチオカーボネートを含み、
構成成分(iii)の前記開始剤がペルオキシ開始剤またはAIBNを含む、請求項9に記載の方法。 - 構成成分(a)が前記星形ポリマーの0.1〜35重量パーセントを構成し;
構成成分(b)が前記星形ポリマーの0.9〜35重量パーセントを構成し;
構成成分(i)が前記星形ポリマーの30〜99重量パーセントを構成する、
請求項9に記載の方法。 - 請求項4に記載の潤滑組成物を機械装置に供給することを含む、機械装置を潤滑する方法であって、前記機械装置が、内燃機関、油圧装置、手動もしくは自動変速装置、産業用ギヤ、自動車用ギヤ(もしくは車軸)または農用トラクターである方法。
- コア部分および3本以上のアームを有する星形ポリマーを調製する方法であって、
(a)制御されたフリーラジカル連鎖移動剤の存在下で少なくとも1つのアルキルメタクリレートを重合させ、反応性末端基を有するポリマー鎖を調製するステップであって、前記ポリマー鎖が前記星形ポリマーの前記アームを形成する前駆体であるステップと;その後
(b)ステップ(a)の生成物を、
(i)少なくとも1つの多官能性メタクリレートモノマーまたは多官能性アクリレートモノマーと反応させ、ただし、前記多官能性モノマーが多官能性のメタクリレートモノマーであるならば、前記生成物を
(ii)少なくとも1つのアルキルアクリレートモノマー
とさらに反応させるステップと;を含み、それによって、ステップ(b)の前記反応が、多数のアームに結合しているコアを含む星形ポリマーを提供し、前記コアが、モノマー(i)、および存在する場合はモノマー(ii)から誘導されるポリマーの架橋ネットワークを含む方法。 - 請求項14に記載のプロセスによって調製されるか、または調製することが可能である、星形ポリマー。
- コア部分および3本以上のアームを有する星形ポリマーであって、
(a)前記アームが少なくとも1つのアルキルメタクリレートモノマーを含むポリマーを含み、
(b)前記コアが、
(i)少なくとも1つの多官能性メタクリレートモノマー、および
(ii)少なくとも1つのアルキルアクリレートモノマー
を含む架橋ポリマー部分を含む星形ポリマー。 - 潤滑粘度の油、および約0.1〜約15重量パーセントの請求項16に記載の星形ポリマーを含む潤滑組成物。
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