Introduction to the New Copolymer of Chloroprene and Acrylonitrile with Differentiated Properties

Table 3

Mooney viscosity, scorch, and cure characteristics of acrylonitrile-chloroprene rubber (NCR), chloroprene rubber (CR), and nitrile rubber (NBR).

	NCR	CR	NBR
Mooney viscosity of compounds (ML1+4), 100°C	55	70	55
Scorch time (, min), 125°C	17.7	9.4	16.4
Rheometer (ARR) data, 170°C, 30 mins
Minimum torque (, N·m)	0.1	0.2	0.1
Maximum torque (, N·m)	1.6	2.2	1.1
(N·m)	1.5	2.0	1.1
(min)	3.8	2.2	1.7
Time corresponds to 10% cure (, min)	3.5	2.1	1.5
Time corresponds to 90% cure (, min)	9.7	5.6	4.7
Cure rate index (min^-1)	16.9	29.4	33.3