Instant adhesives excelling in quick curability and versatility have been widely used for domestic and industrial purposes.
ThreeBond started the manufacture and sale of one-part non-solvent cold-curing instant adhesives in 1969 and has made efforts in developing products to meet customers' requirements in various markets.
However, conventional instant adhesives suffered from the disadvantage of blushing, which degraded the appearance of bonded materials, and in some cases, the use of the adhesives was restricted.
This time, as an innovative means of solving the blushing problem, we developed Three Bond 1771E and 1773E, light-curing instant adhesives which have the advantages of instant adhesives, such as workability, and of light-curing adhesives, using the world's first advanced technology.
Instant adhesives are widely used for domestic and industrial purposes because they are characterized by non-solvent composition, cold curing, one-part formulation, and quick curing.
Since there is a necessity to reduce the cost while maintaining the functionality and quality in order to cope with recent environmental problems and severe price competition, attention is again being paid to the use of instant adhesives.
The light-curing technology has been improved significantly, and due to their easy workability, wide variety of usage, and selective curing, the application of instant adhesives is spreading, particularly to the electric and electronics markets because of their easy workability.
We have developed and launched instant adhesives with light-curing properties which have the advantages of both instant adhesives and light-curing adhesives
Industrial Material Development Section, Development Department, Research and Development Division
The conventional representative light-curing resins were synthesized by radical and cationic polymerization.
For radical polymerization in particular, we have techniques which we have spent a long time acquiring. Therefore, we have developed various kinds of adhesives made of such resins based on various designs.
This time, as a result of the application of these techniques to development and examination, we discovered that the reactivity of adhesives was activated dramatically by a certain combination with a polymerization initiator. Thus it was possible to develop light-curing instant adhesives excelling in light-curing properties and storage stability by using anion species and radical species generators. <Fig. 1>
The instant adhesives with light-curing properties, ThreeBond 1771E and 1773E, overcome blushing, the weakness of conventional instant adhesives, without losing the features of instant adhesives, and they are finding wider applications.