(S)-Campholenaldehyde (Campholen aldehyde) is colorless liquid with fresh and woody odor. It is prepared by the isomerization reaction of 2,3-epoxy pinane.
There are optical isomers of campholenic aldehyde. (R)-(+)-campholenic aldehyde is CAS 4501-58-0, and (S)-(-)-campholenic aldehyde is CAS 23727-15-3.
(S)-Campholenaldehyde is an important intermediate in the synthesis of sandalwood fragrances.
Isobornyl methacrylate (IBOMA) is an acrylic ester monomer with a bridged-ring structure. Its double bond is a C=C bond, with the methyl group attached to the carbon adjacent to the carbonyl group. Typically, the polymerization rate of methacrylates is slower than that of acrylates because the additional methyl group impedes rotation around the double bond and affects overall reactivity. Compared to IBOA, IBOMA may have a higher viscosity, affecting the ease of preparation process.
Due to its molecular structure characteristics of IBOMA, the polymer has excellent high light, vividness, abrasion resistance, medium resistance and weather resistance, and its moisture absorption is significantly lower than MMA (methyl methacrylate). In addition, acrylic resin added with IBOMA has a good compatibility with polyester, alkyd and many volatile paint film forming substances.
Isobornyl acrylate (IBOA) is a kind of acrylic ester monomer with a bridged-ring structure. It has excellent adhesion properties, good chemical resistance, and low shrinkage, making it a popular choice for use in UV-curable coatings on various substrates such as plastics, metals, and wood. IBOA is applied as an important monomer product in the printing ink formulation, solvent-based high-solid content transparent coatings, and curing coatings as a thickening agent, base material, reactive diluent, and curing agent.
IBOA can also be used as a viscosity improver in dental resin, reducing the polymerization shrinkage of resin-based dental restorative materials. When used in bone cement, it can reduce adverse biological effects during implant bonding processes.