About us
Every product has its own best formulation.Every company that makes one has its own challenges.
That is why no two of our answers are the same.We think beside you, and keep building the best answer together.
What we want to deliveris not the stabiliser itself.It is the technology that keeps products in usefor longer, beautiful and sound.
We will go on handing downthe craft we have refined for more than seventy years.And one dayit will put down roots, unbroken, across borders and generations.
Craft that breathes in people’s daily lives becomes, in time, culture.
Craft what lives on.
技術を、文化に。
History
Four parent companies came and went. The technology stayed here.
1946Founded as Kyodo Shoji, a trading company
1953Began making stabilisers for PVC resin
More than seventy years on, we are still making them, and still improving them.
1967Renamed Akishima Chemical Industry Co., Ltd.
1982Obtained patents for β-diketone technology, a breakthrough in PVC stabilisers
β-diketones are co-stabilisers, used alongside Ca-Zn and other stabiliser systems. They suppress the initial colour PVC takes on in processing, and they have helped PVC products do without lead and cadmium. More than forty years on, they are still in our catalogue.
β-diketone · dibenzoylmethane (DBM) - Initial colour
- Suppresses yellowing straight after processing
- Light stability
- Absorbs UV and slows degradation by light
- Heavy-metal free
- Raises the performance of Ca-Zn stabilisers
1992Became part of the Elf Atochem group
2000Certified to ISO 9001
2003Certified to ISO 14001
2012Became part of the KEM ONE group
2016Became part of the IVY group
2019Became part of the Westlake Chemical groupCertified to the 2015 editions of ISO 9001 and ISO 14001
2020Renamed Westlake Akishima Co., Ltd.
2025Renamed Akishima Chemical Co., Ltd.
From 1992 to 2019 we belonged to four overseas corporate groups in turn. Throughout, we went on making and improving stabilisers at our plant in Higashimatsuyama. On 15 December 2025 we took the Akishima name back.
Our own plant in Higashimatsuyama, Saitama
Company information
- Company name
- Akishima Chemical Co., Ltd.
- Founded
- 1946
- Head office
- 〒355-007188-6 Shingo, Higashimatsuyama, SaitamaTEL 0493-24-2255
- Tokyo office
- 〒101-0048ACN Tsukasamachi Bldg 8F, 2-7-9 Kanda-Tsukasamachi, Chiyoda-ku, TokyoTEL 03-5777-2031
- Representative Director
- Naoyuki Okada
- Employees
- 31 (as of March 2026)
- Capital
- ¥30 million