JP2020109188A - 冷凍機油及び冷凍機用作動流体組成物 - Google Patents
冷凍機油及び冷凍機用作動流体組成物 Download PDFInfo
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Abstract
Description
[式中、R1、R2及びR3は互いに同一でも異なっていてもよく、それぞれ水素原子又は炭化水素基を示し、R4は炭化水素基又は酸素含有有機基を示す。]
で表される構造単位を有し、300以上3000以下の数平均分子量Mnを有し、1.10以上2.00以下の重量平均分子量Mwと数平均分子量Mnとの比Mw/Mnを有するポリマーを基油として含有し、ジフルオロメタン、ジフルオロメタンとペンタフルオロエタンとの混合物、ジフルオロメタンとペンタフルオロエタンと1,1,1,2−テトラフルオロエタンとの混合物、ペンタフルオロエタンと1,1,1,2−テトラフルオロエタンと1,1,1−トリフルオロエタンとの混合物、不飽和フッ化炭化水素、炭化水素、及び二酸化炭素から選ばれる冷媒と共に用いられる、冷凍機油を提供する。
[式中、R1、R2及びR3は互いに同一でも異なっていてもよく、それぞれ水素原子又は炭化水素基を示し、R4は炭化水素基又は酸素含有有機基を示す。]
で表される構造単位を有し、300以上3000以下の数平均分子量Mnを有し、1.10以上2.00以下の重量平均分子量Mwと数平均分子量Mnとの比Mw/Mnを有するポリマー(以下「(メタ)アクリレート系ポリマー」ともいう。)を基油として含有し、ジフルオロメタン、ジフルオロメタンとペンタフルオロエタンとの混合物、ジフルオロメタンとペンタフルオロエタンと1,1,1,2−テトラフルオロエタンとの混合物、ペンタフルオロエタンと1,1,1,2−テトラフルオロエタンと1,1,1−トリフルオロエタンとの混合物、不飽和フッ化炭化水素、炭化水素、及び二酸化炭素から選ばれる冷媒と共に用いられる。
[式中、R5は二価の炭化水素基又は二価のエーテル結合酸素含有炭化水素基を示し、R6は炭化水素基を示し、mは0以上の整数を示す。mが2以上である場合には、複数のR5は互いに同一でも異なっていてもよい。]
(A)R1〜R3が水素原子であり、R4がエチル基である構造単位と、R1〜R3が水素原子であり、R4がn−ブチル基である構造単位と、R1〜R3が水素原子であり、R4がi−ブチル基(2−メチルプロピル基)である構造単位とを有する共重合体。
(B)R1〜R3が水素原子であり、R4がエチル基である構造単位と、R1〜R3が水素原子であり、R4がプロピル基である構造単位とを有する共重合体。
(C)R1及びR3が水素原子であり、R2及びR4がメチル基である構造単位と、R1〜R3が水素原子であり、R4がi−オクチル基(例えば2−エチルヘキシル基)である構造単位とを有する共重合体。
(D)R1〜R3が水素原子であり、R4がエチル基である構造単位と、R1及びR3が水素原子であり、R2がメチル基であり、R4がグリシジル基である構造単位とを有する共重合体。
(E)R1〜R3が水素原子であり、R4がi−ブチル基(2−メチルプロピル基)である構造単位と、R1及びR3が水素原子であり、R2がメチル基であり、R4がメトキシエチル基である構造単位とを有する共重合体。
AC2:アクリル酸エチル
AnC4:アクリル酸ノルマルブチル
AiC4:アクリル酸2−メチルプロピル
AC3:アクリル酸プロピル
MC1:メタクリル酸メチル
AiC8:アクリル酸2−エチルヘキシル
MG:メタクリル酸グリシジル
MMOE:メタクリル酸メトキシエチル
AEOM:アクリル酸エトキシメチル
Mn、Mw/Mn:溶剤としてテトラヒドロフランを使用し、希釈して試料濃度を1質量%とした溶液を調製した。その試料溶液を、GPC装置(Waters Alliance2695)を用いて分析を行った。溶剤の流速は1ml/min、分析可能分子量100から10,000のカラムを使用し、屈折率を検出器として分析を実施した。なお、分子量が明確なポリスチレン標準を用いてカラム保持時間と分子量との関係を求め、検量線を別途作成した上で、得られた保持時間から分子量を決定した。
動粘度及び粘度指数:JIS K2283:1993
流動点:JIS K2269:1987
引火点:JIS K2265−4:2007
自然発火点:ASTM E659−1978
添加剤1:2,6−ジ−tert.−ブチル−p−クレゾール
添加剤2:トリクレジルホスフェート
添加剤3:グリシジルネオデカノエート
添加剤4:2−エチルヘキシルグリシジルエーテル
JIS K2211:2009「冷凍機油」の「冷媒との相溶性試験方法」に準拠して、ジフルオロメタン/ペンタフルオロエタンの混合物(質量比50/50)(R410A)、ジフルオロメタン(R32)、2,3,3,3−テトラフルオロプロペン(HFO−1234yf)、プロパン(R290)又は二酸化炭素(CO2)10gに対して冷凍機油を10g配合し、冷媒と冷凍機油とが0℃において相互に溶解しているかを観察した。なお、表中、「相溶」は冷媒と冷凍機油とが相互に溶解したことを意味し、「分離」は冷媒と冷凍機油とが2層に分離したことを意味する。
実コンプレッサと類似の冷媒雰囲気にできる、神鋼造機(株)製の高圧雰囲気摩擦試験機(回転ベーン材と固定ディスク材との回転しゅう動方式)を用いて、耐摩耗性試験を行った。試験条件は、冷媒の種類ごとに下記の耐摩耗性試験−(1)〜(5)のいずれかとした。
耐摩耗性試験−(1):冷媒としてR410Aを使用し、試験容器内圧力は1.6MPa。
耐摩耗性試験−(2):冷媒としてR32を使用し、試験容器内圧力は1.6MPa。
耐摩耗性試験−(3):冷媒としてHFO−1234yfを使用し、試験容器内圧力は1.6MPa。
耐摩耗性試験−(4):冷媒としてn−ヘキサン(冷凍機油に対して容積で20%配合。R290等の炭化水素冷媒は安全面での不安があるため代替として使用。)を使用し、試験容器内圧力は常圧より若干高い圧力。
耐摩耗性試験−(5):冷媒としてCO2を使用し、試験容器内圧力は1.6MPa。
Claims (5)
- 下記一般式(1):
[式中、R1及びR3は水素原子、R2は水素原子又はメチル基、R4は炭化水素基又は酸素含有有機基を示す。]
で表される構造単位を有する(メタ)アクリレート系ポリマーを基油として含有し、冷媒と共に用いられる冷凍機油であって、
前記(メタ)アクリレート系ポリマーは、前記一般式(1)におけるR4が炭素数1〜4のアルキル基である構造単位から選ばれる一種以上である第一の構造単位と、R4が炭素数5〜8のアルキル基又は酸素含有有機基である構造単位から選ばれる一種以上である第二の構造単位とを含む共重合体であり、
前記(メタ)アクリレート系ポリマーは、300以上3000以下の数平均分子量Mnを有し、1.10以上2.00以下の重量平均分子量Mwと数平均分子量Mnとの比Mw/Mnを有する、冷凍機油。 - 前記(メタ)アクリレート系ポリマーが、前記一般式(1)におけるR4が炭素数1〜4のアルキル基である構造単位から選ばれる一種以上である第一の構造単位と、R4が炭素数5〜8のアルキル基である構造単位から選ばれる一種以上である第二の構造単位とを含む共重合体である、請求項1に記載の冷凍機油。
- 前記(メタ)アクリレート系ポリマーの40℃における動粘度が、10mm2/s以上400mm2/s以下である、請求項1又は2に記載の冷凍機油。
- 請求項1〜3のいずれか一項に記載の冷凍機油と、冷媒とを含有する冷凍機用作動流体組成物。
- 前記冷媒が、ジフルオロメタン、ジフルオロメタンとペンタフルオロエタンとの混合物、ジフルオロメタンとペンタフルオロエタンと1,1,1,2−テトラフルオロエタンとの混合物、ペンタフルオロエタンと1,1,1,2−テトラフルオロエタンと1,1,1−トリフルオロエタンとの混合物、不飽和フッ化炭化水素、炭化水素、及び二酸化炭素から選ばれる少なくとも一つを含有する、請求項4に記載の冷凍機用作動流体組成物。
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JP2016017170A (ja) * | 2014-07-11 | 2016-02-01 | 東亞合成株式会社 | 潤滑油用添加剤及び潤滑油組成物 |
KR102504399B1 (ko) * | 2014-10-09 | 2023-03-02 | 에네오스 가부시키가이샤 | 냉동기유 및 냉동기용 작동 유체 조성물 |
CN108138074B (zh) | 2015-09-29 | 2021-08-31 | Kh新化株式会社 | 冷冻机油组合物及使用该组合物的冷冻机用工作流体组合物 |
WO2017057614A1 (ja) | 2015-09-29 | 2017-04-06 | Khネオケム株式会社 | 冷凍機油組成物およびそれを用いた冷凍機用作動流体組成物 |
JP6925323B2 (ja) * | 2016-04-14 | 2021-08-25 | Eneos株式会社 | 冷凍機油 |
CN109844076B (zh) * | 2016-10-20 | 2022-12-13 | Jxtg能源株式会社 | 冷冻机油和冷冻机用工作流体组合物 |
JP6937108B2 (ja) * | 2016-11-04 | 2021-09-22 | 日立ジョンソンコントロールズ空調株式会社 | 電動圧縮機及び冷凍空調装置 |
CN112004908B (zh) * | 2018-04-25 | 2022-02-18 | 大金工业株式会社 | 含有制冷剂的组合物、其用途、利用其的冷冻方法和具有其的冷冻机 |
FR3093729A1 (fr) * | 2019-03-13 | 2020-09-18 | Total Marketing Services | Utilisation d’un ester dans une composition de refroidissement |
CN110878194B (zh) * | 2019-10-16 | 2020-11-17 | 珠海格力电器股份有限公司 | 一种含r13i1的环保混合制冷剂及换热系统 |
CN111057611B (zh) * | 2019-12-24 | 2022-04-22 | 珠海格力绿色再生资源有限公司 | 一种混合型冷冻机油及其制备方法 |
EP4134416A4 (en) * | 2020-04-30 | 2023-09-27 | ENEOS Corporation | OIL FOR REFRIGERATING MACHINE, AND WORKING FLUID COMPOSITION FOR REFRIGERATING MACHINE |
CN116836747A (zh) * | 2023-07-03 | 2023-10-03 | 浙江康力博能源科技有限公司 | 一种冷冻机油的制备方法 |
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JP2011162766A (ja) * | 2010-01-18 | 2011-08-25 | Jx Nippon Oil & Energy Corp | 潤滑油組成物 |
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KR20170010390A (ko) | 2017-01-31 |
CN106459802B (zh) | 2019-06-14 |
JPWO2015178233A1 (ja) | 2017-04-20 |
EP3147345A4 (en) | 2017-05-17 |
TWI531644B (zh) | 2016-05-01 |
CN106459802A (zh) | 2017-02-22 |
WO2015178233A1 (ja) | 2015-11-26 |
JP7062027B2 (ja) | 2022-05-02 |
US20170218292A1 (en) | 2017-08-03 |
TW201546261A (zh) | 2015-12-16 |
EP3693446B1 (en) | 2023-11-22 |
EP3147345A1 (en) | 2017-03-29 |
EP3147345B1 (en) | 2020-04-01 |
US10400191B2 (en) | 2019-09-03 |
KR20180026784A (ko) | 2018-03-13 |
JP6681828B2 (ja) | 2020-04-15 |
EP3693446A1 (en) | 2020-08-12 |
KR102177381B1 (ko) | 2020-11-12 |
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