**Author details**

ing between the carboxylic acid groups and the N‐acylurea groups at the cross‐linking sites (**Figure 21**). Note that PMPS‐glued plates detached upon heating to temperatures above the glass transition temperature of PMPS because it is a thermoplastic resin. In contrast, cross‐ linked TPAS acted as a thermoset resin and resulted in stable adhesion. The change in the adhesive strength of the cross‐linked TPAS‐11 upon light irradiation and/or heating was also investigated. **Figure 23(b)** shows the tensile strength of the cross‐linked TPAS‐11 sample as prepared and after heating at 100**°**C for 60 min, and upon irradiation with 254‐nm UV

**Figure 23.** (a) Adhesive strengths of quartz plates bonded with polypropylene (PP), Araldite rapid, PMPS and cross‐ linked TPAS‐11 (with 5 wt% of PCD). Both the PMPS and cross‐linked TPAS contained 20 wt% L‐ANC2. The maximum

times in each measurement. (b) Adhesive strengths of quartz plates bonded with a mixture of TPAS‐11, PCD (5 wt%) and L‐ANC2 (20 wt%): (1) immediately after sample preparation, (2) after heating at 100**°**C for 60 min, (3) after irradiation

UV and heating at 100**°**C for 15 min, (6) after irradiation with UV and heating at 100**°**C for 30 min, and (7) after irradiation

with UV and heating at 100**°**C for 60 min. The tensile test was conducted for 5 times in each measurement.

) is indicated by a dashed line. The tensile test was conducted for 5

), (4) after irradiation with UV and heating at 100**°**C for 5 min, (5) after irradiation with

tensile strength that could be measured (7.2 N/mm<sup>2</sup>

with 254‐nm UV light (3.0 J/cm<sup>2</sup>

140 Alkenes

Takeo Sasaki\*, Khoa Van Le and Yumiko Naka \*Address all correspondence to: sasaki@rs.kagu.tus.ac.jp Tokyo University of Science, Shinjuku‐ku, Tokyo, Japan
