Ba-Zn stabilisers
A leading stabiliser for paste PVC, developed to replace cadmium. For building materials and interiors — the spaces people live in.
- Building sheet
- Wallpaper
- Civil-engineering sheet
- Flooring film
- Synthetic leather
The part you never see is the part that lasts.
Since 1953, for more than seventy years, our work has been making things last. Our heat stabilisers for PVC are at work all around you, every day, unnoticed.
An invisible molecule that shields PVC from heat.
PVC breaks down under processing heat and sunlight, turning yellow, then brown, then black. A stabiliser is the additive that holds that breakdown back. It is a tiny fraction of the finished product, and it decides how long that product lasts.
At 180 °C, the difference shows.
Test strips of PVC go into an oven and come out one every ten minutes, laid side by side. It is the most basic test of a stabiliser. Without one, the PVC chars black within the hour; with one, it barely changes colour.
Image is illustrative.
Test temperature180 °C
Elapsed70 min
It’s inside things you touch every day.
Four product families support PVC wherever it is used — from building materials and food packaging to medical devices and cars.
Ca-Zn stabilisers
Replacing lead in food packaging and outdoor products. For things that touch people’s hands and mouths.
JHPA- and FDA-compliant grades
- Food wrap
- Toys
- Medical devices
- Wire insulation
- Synthetic leather
- Car interior trim
Organotin stabilisers
Heat stability and colour hold for rigid PVC.
- Rain gutters
- Injection mouldings
- Bottles and trays
- Blister packs
- Industrial plate
Co-stabilisers and additives
Used with any of the three stabiliser families to tune performance. Supplied on their own, or blended with a stabiliser into a one-pack product.
- Antioxidants
- β-diketones (patents obtained in 1982)
- Epoxidised soybean oil
- Phosphites
- Polyols
- Perchlorates
- Metallic soaps
- Zeolites
- Hydrotalcite
- Modifiers
- Waxes and lubricants
Our history
1946Founded as a trading company.
We started out in the year after the war ended.
1953Began making stabilisers.
Our first stabilisers for PVC. More than seventy years on, we still work in the same chemistry.
1982Obtained β-diketone stabiliser patents.
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.
- 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
2025Five parent companies came and went. The technology stayed here.
From 1992 to 2019 we belonged to five overseas corporate groups in turn. Throughout, we went on making the same stabilisers in the same plant in Higashimatsuyama. On 15 December 2025 we began again as Akishima Chemical Co., Ltd.
Manufacturers in Japan and overseas build their products on our stabilisers.
A stabiliser is qualified on the customer’s own production line before it goes into use. A long relationship means we have been chosen again, every time.
- Construction
- Food packaging
- Medical
- Automotive
- Wire and cable
- Quality
- ISO 9001:2015 certified
- Environment
- ISO 14001:2015 certified
- Food contact
- Selected Ca-Zn grades confirmed by the Japan Hygienic PVC Association (JHPA)
- Manufacturing
- Our stabilisers are made at our own plant in Higashimatsuyama, Saitama
One formulation, for one customer.
We draw on dozens of components to design a product around your processing conditions and end use. Not a mass-produced commodity grade — a stabiliser for your line.
Talk to us about a formulation
- Development
- Typically 1–2 months; six months to a year for harder programmes
- Production
- Small lots welcome
- Form
- Liquid or powder; also one-pack products combining several components
- Team
- One small team takes you from first enquiry through development to production
Products
Four families, and one-pack blends.
Each family on its own, or several combined into a one-pack product matched to your application.
- Ba-Zn
- Ca-Zn
- Organotin
- Co-stabilisers
Careers
Making stabilisers in Higashimatsuyama.
Eighty years on, we are looking for people to take our know-how forward. See the openings in R&D and production.
