JPH07152Y2 - Bathtub stopper connection member - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bathtub plug connecting member. More specifically, the present invention relates to a bathtub plug connecting member configured so that the bath temperature can be easily visually recognized by a color change on the surface of the bathtub plug connecting member.

Problems to be Solved by Conventional Techniques and Inventions Conventionally, there is no means for easily visually recognizing the bath temperature, especially the temperature distribution state of the lower layer, the middle layer, and the upper layer in a home etc. Or, it relies on measurement with a thermometer, etc.
Only the extremely rough temperature of the upper layer is known, while the latter has the inconvenience of requiring an extra measuring tool.

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a temperature-sensitive discoloring bathtub plug connecting member that allows the bath temperature to be visually recognized easily by color change.

Technical Means for Solving Problems The constitution of the present invention will be described below with reference to the drawings (see FIGS. 1 and 2).

The bathtub plug connecting member 1 of the present invention is provided with a white to light opaque coloring layer on at least a portion of the surface near the bathtub plug and an intermediate portion of the entire length, and an electron-donating coloring agent is provided on the opaque coloring layer. A microcapsule containing a thermochromic material, which is composed of a compatible solution of an electron-accepting color developer and a discoloration temperature control agent and that discolors at or below a predetermined temperature, is fixed in a dispersed state in a fixing resin. A reversible thermochromic layer 2 having a thickness is provided, and the bath temperature can be visually recognized by the color change on the surface of the connecting member.

In the above description, it is effective that the connecting member of the base body has various conventionally known shapes such as chain shape, bead shape, and string shape.

The reversible thermochromic layer 2 is a coating composition prepared by dissolving or dispersing a thermochromic material in a medium and mixing it. [In order to further improve the sensitivity and sensitivity of discoloration, microcapsules (particle size: About 0.5-50 μm, preferably 1-25 μm
m) in a dispersed system] can be directly formed on the surface of the substrate by means of coating, spraying, dipping or the like and dried to form the layer.

As the thermochromic material in the above, conventionally known materials are effective, for example, an electron-donating color-developing organic compound, a color developing agent for the compound, and a color-changing temperature controlling agent for determining the occurrence temperature of the color reaction between the both. And a pigment exhibiting reversible thermochromic properties in the form of fine particles of a resin solid solution of the above components, and the like, which is proposed by the present applicant as a suitable example. -35414 Publication, Japanese Patent Publication No. 51-44706
The thermochromic materials disclosed in JP-B No. 52-7764 and JP-B No. 51-35216 can be used.

A conventionally known fixing resin is blended with the coating composition to firmly fix the thermochromic material basically.

As a pre-stage of coating, a white to light opaque surface layer that hides the background color is formed on the substrate to make the visual perception of color change clearer.

The reversible thermochromic layer can be changed in multiple stages by mixing a plurality of thermochromic materials having different color changing temperatures, color tones, and concentrations, using a non-color-changing pigment (general pigment) together, or overprinting.

Action Since the bathtub plug connecting member is used by being installed substantially vertically from the bottom part of the bathtub, the thermochromic layer provided at an appropriate position on the surface of the member (for example, the discoloring material is 30 ° C, 35 ° C, 40 ° C, 45 ° C,
(50 ℃, 60 ℃, etc.) changes color in response to the bath temperature, the color change corresponding to the temperature can be visualized, and the liquid temperature in each layer can be visually recognized.

Example 1 (parts in the following examples are parts by weight) Thermochromic microcapsules B '(thermochromic material B (shows a pink color below 45 ° C and changes to colorless above the temperature)) Microcapsulation by a known method] 1 part, thermochromic microcapsules C '[thermochromic material C (green below 35 ° C, which changes to colorless at a temperature above 35 ° C) are microencapsulated by a known method. What was done] Part 1, 0.015 of CI Pigment Yellow 3
Part, 6 parts of a glycidyl ether type epoxy resin, and 2 parts of an amine curing agent are uniformly mixed, and a thermochromic coating is applied to the outer surface of the chain connecting member [previously a white opaque surface layer (titanium white 5 parts, 50 parts of acrylic resin (xylene / butyl acetate-based solvent, solid content about 50%) and diluent solvent (30 parts of xylene, 20 parts of toluene) are applied and dried] A thermochromic bathtub connecting member 1 was obtained.

When the bathtub plug connecting member 1 is set in the bathtub and water of about 15 ° C is filled in the bathtub and the gas water heater is ignited to boil, the upper layer of the hot water is about 50 ° C and the intermediate layer is about 40 ° C. On the other hand, the lower layer was heated to about 30 ° C., and at the same time, at the time of the initial water of 15 ° C., the chain-like connecting member which was entirely black, the lower layer was still black, and the intermediate layer was pink. The upper layer turned pale yellow.
When the hot water in this state was well stirred with a wand, the total hot water temperature was about 40 ° C., and the entire connecting member 1 turned pink.

The above is the result of examining the relationship between the temperature measurement by the thermometer and the color change.

Effect of the Invention The bathtub plug connecting member of the present invention is configured as described above, and as described in the above embodiment, it exhibits a desired color change by being sensitive to the temperature change, and at a glance, the bath temperature is almost the same. Of course, the temperature distribution from the lower layer to the upper layer can be easily visually confirmed, the danger of high temperature can be avoided in advance, and in addition to the practical convenience that the visually agitated state of the hot water and the appropriate temperature can be visually confirmed, There is a nuance due to the change, which enhances the marketability of this type of connecting member.

[Brief description of drawings]

FIG. 1 is a perspective view in which a part of a bathtub plug connecting member of the present invention is omitted, and FIG. 2 is a perspective view showing a part of a discolored state when the member is applied. 1 ... Bathtub plug connection member 2 ... Thermochromic layer

Claims (1)

[Scope of utility model registration request] 1. A white or pale opaque colored layer is provided on the surface of a bathtub connecting member at least in the vicinity of the bathtub stopper and in the middle of the entire length, and an electron-donating coloring is provided on the opaque colored layer. Microcapsules containing a thermochromic material that develops a color at or below a predetermined temperature, which is composed of a compatible solution of an agent, an electron-accepting color developer, and a discoloration temperature controlling agent, are fixed in a dispersed state in a fixing resin, about 1 μm A plug connecting member for a bathtub, which is provided with a reversible thermochromic layer having the above thickness and is configured so that the bath temperature can be visually recognized by the color change of the surface of the connecting member.