Global Patent Index - EP 4130211 A1

EP 4130211 A1 20230208 - LOW VISCOSITY FUNCTIONAL FLUID COMPOSITION

Title (en)

LOW VISCOSITY FUNCTIONAL FLUID COMPOSITION

Title (de)

FUNKTIONALE FLUIDZUSAMMENSETZUNG MIT NIEDRIGER VISKOSITÄT

Title (fr)

COMPOSITION DE LIQUIDE FONCTIONNELLE PEU VISQUEUSE

Publication

EP 4130211 A1 20230208 (EN)

Application

EP 21189129 A 20210802

Priority

EP 21189129 A 20210802

Abstract (en)

This invention relates to a functional fluid, comprising(A) at least 75 wt.-% of alkoxy glycol according to formula (I)         CH<sub>3</sub> - O - (CH<sub>2</sub> - CH<sub>2</sub> - O)n -H     (I)wherein n is a number from 2 to 5, with the proviso that in at least 50 wt.-% of all compounds according to formula (I) n is 3, and that 8 to 40 wt.-% of all compounds according to formula (I) have n = 4 or 5, and(B) at most 10 wt.-% of alkoxy glycol according to formula (II)         R<sub>1</sub> - O - (CH<sub>2</sub>2 - CH<sub>2</sub> - O)m - H     (II)whereinR<sub>1</sub>is a C<sub>2</sub> to C<sub>8</sub> alkyl residue,mis a number from 2 to 6,(C) from 6 to 22, preferably 8 - 18 wt.-% of at least one compound according to formula (III)         H - O - (CH<sub>2</sub> - CH<sub>2</sub> - O)<sub>k</sub> - H     (III)wherein k is a number of 2 or higher, with the proviso that in at least 80 wt.-% of all compounds according to formula (III) k is 2 or 3,(D) at least one additive, selected from the group consisting of corrosion inhibitors, alkalinity agents, aging protection agents, defoamers and lubricants, the lubricants being selected from the group consisting of propylene oxide containing alkylene oxide polymers that are optionally substituted with a C<sub>1</sub> to C<sub>4</sub> alkyl group, triglycerides, castor oil, ricinoleic acid, and ethoxylates of castor oil or ricinoleic acid, and mixtures thereof,the fluid comprising at most 3 wt.-% of an ester between boric acid and a glycol or alkylpolyglycol compound.

IPC 8 full level

C10M 169/04 (2006.01); C10M 105/18 (2006.01); C10M 111/04 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/08 (2006.01); C10N 40/08 (2006.01)

CPC (source: EP)

C10M 105/18 (2013.01); C10M 107/34 (2013.01); C10M 111/04 (2013.01); C10M 169/04 (2013.01); C10M 2207/0406 (2013.01); C10M 2207/046 (2013.01); C10M 2209/104 (2013.01); C10M 2209/1045 (2013.01); C10M 2209/1085 (2013.01); C10M 2227/061 (2013.01); C10N 2030/02 (2013.01); C10N 2030/08 (2013.01); C10N 2030/44 (2020.05); C10N 2040/08 (2013.01)

C-Set (source: EP)

  1. C10M 2209/104 + C10M 2209/108
  2. C10M 2209/1045 + C10M 2209/1085

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4130211 A1 20230208; EP 4381034 A1 20240612; WO 2023011801 A1 20230209

DOCDB simple family (application)

EP 21189129 A 20210802; EP 2022067578 W 20220627; EP 22737871 A 20220627