Abstract: A water-based adhesive applied to wood and bamboo includes a main agent composed of water-soluble polymer, synthetic rubber latex and natural latex and a curing agent selected from isocyanate or quaternary ammonium salt polymer. Wherein, the weight ratio of the main agent to the curing agent is between 200:1 and 1:1; the water-soluble polymer is polyvinyl alcohol and is about 2-30 weight percent of the total solids of the main agent; the synthetic rubber latex is about 2-60 weight percent of the total solids of the main agent; and the natural latex is about 5-90 weight percent of the total solids of the main agent. The present invention provides a formaldehyde-free adhesive and introduces natural and renewable raw materials to reduce dependence on petrochemical products and improve the sustainability of related industries.

Abstract: A high optical contrast pigment and colorful photosensitive composition employing the same are disclosed. The composition comprises a solvent, an alkali-soluble resin, reactive monomer, and a modified pigment which has low crystallization. The low crystallization degree means that the grain size variation R is not more 80%, wherein the grain size variation R is represented by a formula R=G1/G0×100%, G0 is the original grain size, and G1 is the grain size after modification.

Abstract: A high optical contrast pigment and colorful photosensitive composition employing the same are disclosed. The composition comprises a solvent, an alkali-soluble resin, reactive monomer, and a modified pigment which has low crystallization. The low crystallization degree means that the grain size variation R is not more 80%, wherein the grain size variation R is represented by a formula R=G1/G0×100%, G0 is the original grain size, and G1 is the grain size after modification.