Health & personal care covers a broad range of applications such as feminine care, cosmetics/hair care products, dental compounds, pharmaceuticals and contact lenses.
COSMETICS: HAIR & SKIN CARE
Copolymers of DMAPMA or MADAME with N-vinyl pyrrolidone are used as styling polymers in haircare applications providing a volumizing or conditioning effect.
Quats like TMAEMC and MAPTAC are used in cationic polyelectrolytes, which show good affinity to hair keratin. They are also used for cationic adjustment by copolymerization of cationic monomers with hydrophobic, non-ionic ones, leading to polyelectrolytes whose films are elastic and less hygroscopic.
Soft contact lenses are hydrogels consisting of hydroxyesters, crosslinkers and other comonomers to increase hydrophilicity. VISIOMER® UHP HEMA (ultra high-purity hydroxy methacrylate) enables the production of dimensionally stable soft contact lenses with high wear comfort. This is achieved by combining high oxygen permeability with high water uptake. VISIOMER® UHP HEMA is often used in combination with crosslinkers, such as VISIOMER® EGDMA, PEG200DMA and TRGDMA for this application.
VISIOMER® multifunctional methacrylates are also ideally suited for various dental applications: Artificial teeth and dentures are manufactured using the monomer/polymer method. Here, formulations typically contain a certain amount of multifunctional methacrylates, e.g. VISIOMER® EGDMA. Composites for crowns and bridges, fillings and adhesives contain high molecular weight multifunctional methacrylates that show minimum shrinkage during polymerization, e.g. VISIOMER® HEMATMDI, as well as low-molecular-weight multifunctional methacrylates for viscosity adjustment, such as VISIOMER® TRGDMA. Dental applications also require monomers that can be light cured. Due to its reactivity, VISIOMER® HEMATMDI is one of the methacrylate monomers that is specifically dedicated to this application.