Immersion oil composition having low fluorescence emissions for microscope
AssigneeIdemitsu Petrochemical Co., Ltd.
InventorToshiaki Tanaka
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Abstract
The invention provides an immersion oil composition for microscope especially suitable for use in the microscopic study using a fluorescence microscope by virtue of the greatly decreased fluorescence emission under ultraviolet irradiation in comparison with conventional immersion oils. The inventive immersion oil composition comprises a liquid dienic polymer, e.g. liquid polybutadiene, as a first component and, as a second component, one or a combination of compounds including (a) chlorinated paraffins, (b) polybutene, (c) carboxylic acid esters, (d) liquid paraffins, (e) saturated aliphatic alcohols and (f) alicyclic alcohols; said composition having a refractive index in the from 1.501 to 1.519 and a Abbe's number in the range from 40 to 46.
Claims13
An immersion oil composition having low fluorescence emissions for microscope which comprises 100 parts by weight of a first component which is a liquid dienic polymer and 3 to 200 parts by weight of a second component which is one or a combination of compounds selected from the groups consisting of:
- (a) chlorinated paraffins;
- (b) polybutene;
- (c) carboxylic acid esters;
- (d) liquid paraffins;
- (e) saturated aliphatic alcohols;
- and
- (f) alicyclic alcohols,
- wherein the carboxylic acid ester belonging to the group (c) is selected from the class consisting of methyl acetate, ethyl acetate, dicyclopentyl acetate, dimethyl maleate, diethyl maleate, dimethyl fumarate, diethyl fumarate and dioctyl sebacate;
- the saturated aliphatic alcohol belonging to the group (e) is selected from the class consisting of hexyl alcohol, heptyl alcohol and octyl alcohol;
- and the alicyclic alcohol belonging to the group (f) is selected from the class consisting of tricyclodecanol, tricyclododecanol, tricyclodecenol and tricyclododecenol;
- said composition having a refractive index in the range from 1.501 to 1.519 and a Abbe's number in the range from 40 to 46.
Dependencies are inferred from the claim text.