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Curable liquid composition, composition-accommodating container, liquid composition discharging device, cured material, and method of manufacturing cured material

A technology of liquid composition and discharge device, applied in the directions of inking device, application, coating, etc., can solve problems such as inappropriateness

Inactive Publication Date: 2020-08-07
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this patented solution is an improved softened or gelled formulation for cleaning products without causing any negative side-effects such as irritation on sensitive areas like eyes when used with soap bars.

Problems solved by technology

The technical problem addressed in this patents relates to reducing skin-sensitive issues caused by certain types of chemical substances during printing processes without affecting their effectiveness at producing high quality printed images.

Method used

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  • Curable liquid composition, composition-accommodating container, liquid composition discharging device, cured material, and method of manufacturing cured material
  • Curable liquid composition, composition-accommodating container, liquid composition discharging device, cured material, and method of manufacturing cured material
  • Curable liquid composition, composition-accommodating container, liquid composition discharging device, cured material, and method of manufacturing cured material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0238] Hereinafter, examples are shown, and the present invention will be described in more detail, but the present invention is not limited by these examples.

[0239] Evaluation method of SI value

[0240] The above-mentioned SI value was subjected to a skin allergy test using the LLNA method (Local Lymph Node Assay), and was determined as follows.

[0241] experiment material

[0242] positive control substance

[0243] As the positive control substance, α-hexylcinnamaldehyde (HCA, manufactured by Wako Pure Chemical Industries, Ltd.) was used.

[0244] medium

[0245] As the above medium, use the following mixture:

[0246] Acetone (manufactured by Wako Pure Chemical Industries, Ltd.) 4 parts by volume

[0247] Olive oil (manufactured by Fujimi Pharmaceutical) 1 part by volume

[0248] experimental animals

[0249] With regard to the tested substances, positive control, vehicle control, female mice were acclimatized for 8 days, which included 6 days of quarantine. D...

Embodiment 1～9 and comparative example 1～4

[0296] The following materials A to C were mixed according to the compounding ratios (values ​​are parts by mass) shown in the columns of Examples and Comparative Examples in Table 3 to prepare inks.

[0297] A: Monomers whose SI value is less than 3.0, of course, those who are negative for skin sensitization determined by other methods and equipment are included here.

[0298] B: A photopolymerization initiator having a molecular weight of less than 500.

[0299] C: A photopolymerization initiator having a molecular weight of 500 or more.

[0300] Details of A1 to A8, B1 to B3, and C1 to C6 described in Table 3 are as follows. The values ​​in parentheses at the end are the SI values ​​in the LLNA test, and "none" means those evaluated as "negative for skin sensitization" or "no skin sensitization" in SDS (Safety Data Sheet). "There is no Globally Harmonized System (GHS) icon for the classification and labeling of chemicals that indicate hazards and hazards in the SDS" means...

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Abstract

A curable liquid composition includes a monomer having an SI value of less than 3.0 and a photopolymerization initiator having a weight average molecular weight of 500 or greater, wherein the curableliquid composition is negative in skin sensitization.

Description

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Claims

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Application Information

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Owner RICOH KK
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