In order to prevent surface color change of the metals and generation of metal oxide on the surface, variety

of approaches has been investigated for many years. Here, polymeric molecular coatings of polymers having

a thiol group at the chain end were reviewed. The polymeric molecular coatings have advantages in simple

preparation by immersion of the specimens into solution of the thiol-terminated polymers, and in low electric

resistance on the metal surface. High oxidation resistance property on metal surface with the molecular

coatings was evaluated by surface electrical resistance measurements after heat treatment of the specimen in

air. Quantitative evaluation of metal oxide on the surface by cyclic voltammetry measurements supports the

property of the coatings. Quantitative evaluation also showed that the higher air oxidation resistance property

was provided by longer polymer chain of the coating, whereas shorter chain gave higher electrochemical

oxidation resistance properties on the surface. Versatility of the polymeric molecular coatings such as PMMA

coatings and polymeric coatings on nickel is briefly reviewed as well.

Maximized reinforced adhesion between polytetrafluoroethylene（ PTFE） films and stainless steel plates

is achieved using atmospheric-pressure nonthermal plasma（ NTP） graft polymerization involving argon and

acrylic acid vapor. This process allows for the preparation of flexible high-frequency coaxial cable assemblies

with PTFE as the dielectric material, which is difficult with other processes. The adhesion required for cable

assemblies was evaluated by bonding the treated PTFE films with stainless steel plates and evaluating the

peeling strength. Average adhesion strength of 4.9 N/mm was achieved at an acrylic acid evaporation temperature

of 50 ℃ and an argon flow rate of 40 L/min. The physical properties of the adhesive surfaces were

analyzed by scanning electron microscopy and X-ray photoelectron spectroscopy. Spherical polymer particles

were found on the PTFE film surface, thus significantly improving its adhesive strength. The results presented

herein can help in optimizing PTFE processing conditions and expand its applications to other areas, including

healthcare.

An epoxy resin having a triphenylene ether structure（ BGPBZ） was synthesized and the physical properties

of a cured polymer obtained by curing with 4,4’-dihydroxydiphenyl ether（ DHDE） were evaluated. BGPBZ

gave a crystalline cured polymer with a melting point of 203.4℃ , which was 17.8℃ higher than that of epoxy

resin having a diphenylene ether structure（ DGDPE）. The thermal expansion coefficient of the crystalline

cured polymer is 4.4×10-5 ℃-1, which is 30％ lower than that of the amorphous cured polymer. In addition, the

thermal conductivity is 0.32 W/m･K, which is about 1.5 times that of the amorphous cured polymer.

1,1,2-Tris（4-glycidyloxy phenyl）propane; TGPP） was synthesized by a reaction of phenol and chloroacetone

followed by epoxidation. As a result of evaluating the physical properties of the cured product from TGPP

and phenol novolac, the glass transition temperature was 199℃ , which was 18℃ higher than that of PN-E.

The elastic modulus in the rubber state（ Tg+50℃） of the TGPP cured product was 4.7 × 107 Pa, which was

less than 1/2 that of the triphenylmethane type epoxy resin（ TPM-E）. Furthermore, the fracture toughness

was 0.72 MPa · m1 / 2, 1.6 times that of TPM-E. These results were considered to depend on the higher mobility

of the molecule chain due to the insertion of the methylene linkage.