PARACRIL NBR POWDER | NBR SPRAY DRIED | NBR CRUMB

Nitrile Rubber modifiers for plastics

Paracril powder

The Paracril “P” type products are mainly used to modify PVC and ABS
and these products provide a variety of key performance and processing characteristics in a number of applications. These include, but are not limited to, flexibility, permanent plasticization, and soft-touch (in PVC), modulus, and impact strength. These modifiers also provide resistance to oil, chemicals, and resilience in changing temperatures. They are produced by chemical crosslinking or conversion branched. The crosslinked grades have varying degrees of reduced mill shrink to as low as 5% versus linear grades of over 35% mill shrink. These grades offer benefits in thermoplastic modification for lower compression set and green strength improvement. Dynasol produces a range of Paracril Nitrile “P” powder rubber products with a particle size of 0.5 -1.0 mm depending on the product.

Paracril Spray Dried Powder

Paracril NBR “SD” Powder, typically <0.10 mm in size, is used in friction products.
The NBR for these applications is typically a higher acrylonitrile content, high viscosity
modifier primarily used to modify phenolic resins in brake pads, linings, or clutch facings. They provide excellent heat resistance and serve to reduce noise and vibration during the service life of friction materials The Paracril SD acts as a secondary binder that provides a higher coefficient of friction, antifading performance, plus fuel and oil resistance.

Nitrile Rubber for Adhesives Applications

Paracril Nitrile Rubber crumb and bale products

Paracril is an ideal polymer for solvent-based cement for use where oil resistance and good adhesion characteristics are needed. By compounding with other polymers, resins, softeners, and curatives, the properties of the dried adhesive film can be adapted for a wide range of applications. The correct grades of Paracril can be easily solvated and have excellent stability, depending on the polymer breakdown, concentration, and solvent type. Paracril for adhesive applications is available in “crumb” form (6-12 mm size) for ease of dissolving, or in traditional “bale” form.

Product No	Base Polymer	A/O Type	ACN %	Mooney ML 1+4 @ 100C	Pre-crosslinked	Anticake Type	Anticake Level %	Particle size <mm
P3350CC2	33L50	NS	33	50	No	CaCO3/CaSt	10	1
P3350CC	BJLT M50	NS	33	50	No	CaCO3	12.5	1
P3380CC1	BLT M80	NS	33	80	No	CaCO3/CaSt	12.5	1
P33110C1	33.11	NS	33	110 (UML)	No	CaCO3/CaSt	12.5	1
P3380XP	33.80XL	NS	33	80	High	PVC	10	1
P3250XP	32.55XL	NS	32	55	Partial	PVC/CaSt	10.5	1
P7092P	33.55XL	NS	32	47	High	PVC/CaSt	9	0.6
SD3811	38115	NS	38	115	High	Talc	9	0.1
SD3811C	38115	NS	38	115	High	Talc	9	0.1
		NS
CV	CLM	NS	35	67.5	No	PVC	10	12
CV80	CLM	NS	35	80	No	PVC	10	12
C3380CC	BLT M80	NS	33	80	No	CaCO3	8.5	6
P7083CR	32.55XL	NS	32	55	Partial	PVC/CaSt	8	6