The story
Mitsui Chemicals of the Mitsui group emerged in 1968 with the merger of Toyo Koatsu and Mitsui Chemical Industry. The former was established in 1933 and was mainly engaged in the manufacture of fertilizers while the latter was founded in 1941 and produced dyes and organic intermediates. The new entity focused in the production of four product lines: fertilizers; basic products (methanol, formaldehyde, phenol, aniline, bisphenol A, TDI, MDI, and melamine); polymers; and, fine chemicals.
Due to the opportunities in India, Mitsui Chemicals has decided to establish its first polypropylene compounding plant in India at 'Japanese Investment park' Neemrana phase III. The unit being set up will be the manufacturing base of Mitsui Chemicals Group in India in which Mitsui Chemicals holds 80% equity and 20% equity is with another subsidiary, Prime Polymers Company of Japan.
In February 2021, the company stopped operations in their Ichihara petrochemical complex in east Japan's Chiba prefecture to carry out safety inspections after an earthquake hit northeast Japan's Fukushima prefecture.
In August 2026, Mitsui Chemicals completed its US$900 million acquisition of Utah-based dental-products manufacturer Ultradent Products, making the company a wholly owned subsidiary. Regulatory approvals were completed ahead of schedule, allowing the transaction to close on August 14 rather than the originally planned September date. Mitsui Chemicals subsequently shifted global management functions for its oral-care business to a U.S.-based holding company as part of the integration.
From Wikipedia’s article on Mitsui Chemicals, shared under CC BY-SA 4.0.7