JPS58183775A - Adhesive composition for pressure transfer - Google Patents

Abstract

PURPOSE:The titled composition that contains a wax, an acrylic resin, a silicone resin, natural rubber in a specific proportion where they are dissolved in a medium in a specific concentration, thus being readily dryable at room temperature, free from tackiness on the adhesive layer and showing good transferring performance. CONSTITUTION:The objective composition is produced by dispersing a mixture consisting of (A) 98-50wt% of a wax such as paraffin wax, micro wax or carnaurba wax and (B) 2-50wt% of at least one selected from acrylic resins, silicone resins, natural rubber, synthetic rubber, petroleum hydrocarbon resin in a medium such as n-pentane or cyclohexane so that the solid content of A and B becomes 5-50wt%. EFFECT:The adhesive layer is in very good conditions, after drying, free from cracking. Transferred letters and patterns are tacky-free and resistant to peeling.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new and useful adhesive composition for pressure transfer, and its purpose is to apply characters or designs printed on a support to an adherend F. The present invention involves preparing an adhesive composition for pressure transfer. More specifically, characters or patterns used for design or lettering are printed on a support 1 such as a film, a cloth of adhesive is applied in the printing direction of the film 1 obtained in this manner, and the film is dried. A composition suitable for the purpose of transferring desired f, V: c characters, designs, etc. by rubbing and applying pressure with a stick-like object such as a ballpoint pen, etc., is applied to the surface of body 1. IA 4 It is something that

By the way, if it were possible to print designs and lettering on adherends with designs previously printed on film, etc., it would be possible to quickly and easily create designs and lettering without requiring any skill. Although it should be possible to create a beautiful finish, the adhesives traditionally used for this oak require heating or wetting with water during transfer, and they also have a very high cost. It had drawbacks such as difficulty in being transferred.

However, as a result of the inventors' studies to improve the various points mentioned above, we have found that the following excellent products can be obtained by dissolving or dispersing waxes and specific resins and/or rubbers. The present invention has been completed by emphasizing its unique features.

4-fi Specifically, the present invention contains 98 to 50% of wax (A) as an essential component, and is selected from the group consisting of acrylic resin, silicone resin, natural rubber, synthetic rubber, and petroleum-based hydrocarbon resin. At least 14 m of material (
B) is contained in an amount of 2 to 50 vI1%, and these (A) and (B) are dissolved or dispersed in a medium such that the solid content is 5 to 50% by weight. The present invention provides an adhesive composition for pressure transfer, and first of all, the composition of the present invention must be dried normally at room temperature after application, and then be dried at room temperature. Despite this, the adhesive layer is not sticky, the support coated with the adhesive is easy to handle, and it also acts as a binder for the printing ink part, and it is easy to use during application. It has many features such as not dissolving the printing ink, being able to easily transfer letters and designs under pressure, and furthermore, the transferred letters and designs being non-sticky and difficult to peel off. It is.

Typical waxes (A) constituting the composition of the present invention include paraffin wax, micro-crystalline wax, hydrocarbon wax such as low-grade polyethylene or fractional polypropylene; or carnauba wax. Waxes and animal and vegetable waxes such as beeswax may be used alone or in combination of two or more waxes.

The appropriate proportion of the wax (A) used is 98 to 50!1%, more preferably 95% to 50%, based on the total solid content of the film-forming components (A) and (B) as described above. ~65111%. When the proportion of such waxes used exceeds 98%, a wax with sufficient adhesion performance is required.On the other hand, when the proportion of wax used is less than 11%, the adhesive layer becomes sticky. Neither is preferable.

On the other hand, the substance belonging to the above group (B) constituting the composition of the present invention is one that imparts appropriate adhesion to the adhesive, and the '+M component is usually commercially available as an adhesive.
In addition to acrylic resins or silicone resins manufactured by well-known and commonly used methods, natural rubber, chlorograne rubber, 1tsBR, SOS (styrene-citadiene block copolymer), etc. (
Rubber heavy adhesives whose main components are styrene-isobutyne block copolymer) Li, or polyptaje, polybutene, polyisobutyne, or styrene-isobutyne
There are petroleum-based hydrocarbon resins obtained by co-m&ing aliphatic or aromatic petroleum fractions such as copolymers.
These acrylic resins, silicone resins, natural rubbers, synthetic rubbers, or petroleum-based hydrocarbon resins may be used alone or in combination with 141111.

The proportion of the component (B) used is 2 based on the total solid content of the film-forming components (A) and (β) as described above.
-+01i setting% is appropriate, more preferably 5-3
There is a 5-station QO'C. The usage rate of substances belonging to component (B) is 211! If the amount is less than 56, it is difficult to obtain sufficient adhesive strength, and if it exceeds 50 m1%, the adhesive layer tends to become sticky, so both are not preferred.

In addition, the recording medium used to obtain the composition of the present invention must have an appropriate evaporation rate and must not dissolve ink printed on a support such as a film. Typical examples of such media include n-pentane, cyclopentane, n-hexane, cyclohexane, methylcyclohexane, and n-hebutane. , n-octane, rubber volatile oil, benzine, mineral turpentine, small toluene, xylene, methyl acetate, ethyl acetate, n-propyl acetate, n-butyl acetate, acetone, methyl ethyl ketone, methyl ethyl isobutyl ketone, ethylene glycol monomethyl ether or Examples include ethylene glycol monoethyl ether.

These media may be used alone or in a mixture of 241 or more, as long as they simultaneously satisfy the above-mentioned conditions.

The above-described film-forming skewer containing the total solid content of both essential components (A) and (B) is made of a skewer that prevents uneven coating and repelling when the composition of the present invention is applied as an adhesive. Viscosity, typically 500-5000 cps (2
/look field viscosity at 5°C; the same applies hereinafter), 5 to 50% by weight, more preferably 10 to 4%.
A range of 0% overlap is appropriate, and it is preferable to adjust within this range using the medium.

Further, the support may include a polyester film, such as a polyethylene film, a polypropylene film, or a film made by Rofan.

The thus obtained composition of the present invention is coated on the printed surface of the above-mentioned support, on which arbitrary letters and designs are printed, by a known and commonly used method, and then dried. The coated support is placed on an adherend with the coated side aligned with the adherend, and then pressure is applied with a stick to transfer the printing ink portion corresponding to the above-mentioned characters or designs. It can be used as an adhesive for pressure transfer.

Next, the present invention will be explained in detail with reference to actual examples, specific examples, and comparative examples, but hereinafter all parts and percentages are based on weight unless otherwise specified.

Example 1 1 Paraffin Wax 150J (Japanese Ant@Product) 70 parts 1 Micro Wax 180J
30 copies (Exxon Chemical - Product) 1 Fineta, Ri TD-3208J
20 parts (Dainippon Ink Chemical Co., Ltd. @lI!! Acrylic resin; solid content -40%) Ink iJ hexane 20
0 parts xylene 2
00 parts The ingredients listed in L were charged into a reaction vessel equipped with a cooler and a stirrer, and heated to uniformly dissolve them to obtain an adhesive composition.

This composition has a solids content of 20.1% and a viscosity of 180%.
It was a white slurry of 0 cps.

The obtained adhesive was evaluated as follows.

First, we checked the condition of the silicone-treated polyester film, the condition of the adhesive layer after drying, the presence or absence of stickiness of the adhesive, and the transferability of the letters, etc. to the adherend.

The results are summarized in Table 1.

Example 2 1 carnauba wax mlJ 5
011 Paraffin wax +50-1
501fI Noricon Wani Smoking K11-101
-10 J 25 parts (Shin-Etsu Chemical Co., Ltd. lll1 likon resin; solid content -60%) ・1 Pentane 1
00B, Neral Turpen
The composition is like 200 parts 1 to 2! A slurry-like adhesive composition was obtained in the same manner as in Example 1 except for the above.

After that, we will continue to evaluate the implementation INI and WUll, and
It's a summary on the table.

In addition, the solid content of the composition obtained in this example was 26.1
%C, and the viscosity was 3500 cps.

Implementation N3 1 carnauba wax 1 m 1 J
20 Part 1 Mobile Wax 2305J
70 parts (Mobil Oil 1111 products) in polybutadiene total 200, J
30 parts (Romoto Petrochemical - product) Talohexane 200 parts IF Isopar HJ (Exxon Chemical - II 2
5016 Aromatic Solvent) A target adhesive composition was obtained in the same manner as in Example 1, except that the composition was changed to the following. There was also a slurry-like material with a viscosity of 2200 cps.

Thereafter, the same evaluation as in Example 1 was performed, and the results shown in Table 1 were obtained.

Comparative example 1 f paraffin wax +50J
30 ll11 So γ Intank TO-3208J
150 parts n hexane
200 copies 1 Tsurupetstu 150J
(100 g 11 aromatic solvent manufactured by Esso Kagaku ■) The adhesive composition of comparative YIAyA was prepared in the same manner as in Example 1 except that the solid content was 18.8% and the viscosity was 15 Q Ocps. I got something.

Thereafter, evaluations were conducted in accordance with Example 1 and Do 1, and the results shown in Table 11 were obtained.

Comparative Example 2 1 Carnauba wax N+lIJ
50 parts 1 micro crystalline wax 190
J 50 parts (same company product) Cyclohexane 15
01% mineral turpentine
A slurry-like adhesive composition having a solid content of 22% and a viscosity of 2100 C10 was obtained in the same manner as in Example 1, except that the amount was 200 parts.

Thereafter, the same evaluation as in Report 1 was performed, and the results shown in Table 1 were obtained.

Claims (1)

[Claims] As essential components, (A) 98 to 50% by weight of waxes, and (B)
Contains at least one substance selected from the group consisting of acrylic resin, silicone resin, natural rubber, synthetic rubber, and petroleum-based hydrocarbon resin at a solid content ratio of 2 to 50% by weight, and both of the above. It is dissolved in a medium so that the solid content is 5 to 50% by weight. An adhesive composition for pressure transfer, characterized in that: is dispersed therein.