Why it matters
Glass transition temperature sets how a flexible or viscoelastic foam feels and behaves: where it softens, how slowly it recovers, and how much energy it absorbs. In memory-foam and specialty flex applications, Tg — and the width of the Tg range — is the product.
It is also one of the hardest properties to control with industry-standard polyols and additives. Formulators typically stack multiple additives to shift a single property, and each addition drags along a side effect on airflow, resilience, or compression set.
How MCPU solves it
Yellow Jacket™ additives lower Tg and widen the usable Tg range in viscoelastic foams at a single, tunable addition level. Because the additive is reactive, the shift comes from the network itself rather than from a plasticizer that can migrate or fog over time.
That means one lever instead of three: dial the addition level to place the transition where the product needs it — body temperature for bedding, ambient for seating, sub-ambient for cold-environment applications — while the rest of the formulation stays where you already qualified it.
Test data & spec snapshot
Representative values — actual performance depends on your formulation. Pilot data available on request.
| Mechanism | Reactive Tg modifier bonded into the network |
|---|---|
| Effect | Lowered Tg with a broadened, tunable transition range |
| Control | Single addition level replaces multi-additive stacking |
| Foam types | Viscoelastic and conventional flexible foam |
Typical applications
- Memory-foam mattresses, toppers, and pillows
- Viscoelastic seating and automotive comfort layers
- Cold-environment flexible foam requiring sub-ambient response
- Acoustic and damping foam layers