Castor Oil Products

Vertellus Polycin® GR polyol range

Product introduction
The Polycin® GR series are 100% solids, castor oil based polyols used as reactive resins in polyurethane systems. For the first time, these products will yield a range of mechanical properties not available from the glyceryl ricinoleate chemical composition. Shore hardness from high D to low A can be achieved by MDI curing. The GR range uses castor oil as its sole base and is a completely natural product from renewable sources.

Preliminary technical information

nature	GR-340	GR-220	GR-160	GR-110	GR-80	GR-50	GR-35
molecular weight	370	650	928	1330	1770	2610	3450
Hydroxyl value	342	220	164	109	78	52	38
equivalent	164	255	342	515	716	1085	1457
functionality	2.9	2.8	2.7	2.6	2.4	2.2	2.0
Viscosity (cP)	900	775	720	1000	1050	1400	2000
specific gravity	0.985	0.968	0.959	0.948	0.946	0.943	0.941
Color value (Gardner)	3	2+	1+	3+	3-	4	5
p-MDI curing hardness
Shore D	70	35	12	10	0	0	0
Shore A	98	80	60	52	35	13	3
Shore OO	100	90	90	88	80	60	40
Tensile Strength(psi)	6,345	2,600	540	165	135	65	38
Elongation(%)	10	100	90	55	65	65	130
Tear Strength(pli)	750	375	50	18	13	11	8