What is FSK series?

Aliphatic polyester polyol (liquid ester oligomer) obtained through polymerization and condensation reaction of succinic acid with oxyalkylene glycol.

Characteristics of FSK series

- as a substiture raw material for general-purpose PPG and adipate -

1. It shows high cohesiveness compared with general-purpose PPG and adipate, because of FSK's high ester-binding concentration.
2. Improvement in compatibility, adhesiveness, hydrophilicity, characteristics, etc., is expected.
3. KKC is an integrated overall manufacturer from raw materials to end products, and has its own highly productive and competitive supplying system.

Typical properties of FSK series

	Number- average molecular weight	Acid value	Hydroxy group value	Viscosity (25)	Number of functional groups	Color	Refractive index	Specific gravity (20)	Flash point
		(mg-KOH/g)		(mPa･s)					()
FSK-700	700	< 1.5	150	1,700	2	Pale yellow to clear yellow	1.472	1.18	236
FSK-1200	1,200	< 1.5	90	9,500	2	Pale yellow to clear yellow	1.474	1.23	252
FSK-2000	2,000	< 1.5	56	20,000	2	Pale yellow to clear yellow	1.476	1.25	270

Inquiry on FSK series

With respect to the industrial properties of each end product in their respective applications, it is subject to verification by the customer.
Combination of various raw materials makes it possible to adjust molecular weight, viscosity, hydroxyl group value, and reactivity, etc., to the desired value. Please contact us.