SP-1045P is a heat-reactive resin similar to SP-1045 but supplied in pastille form.
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SP-1045P is used to produce butyl vulcanizates with advanced resistance to high heat and compression set. Vulcanizates cured with SP-1045P are nonblooming, nonstaining, and ozone resistant. SP-1045P was developed to cure isobutylene-isoprene (butyl) rubber using the resin cure system. When it is combined with halogen and zinc donors, it produces butyl vulcanizates that exhibit exceptional resistance to high heat and compression set. Furthermore, these vulcanizates possess the desirable qualities of being nonblooming and nonstaining and having high modulus values.
Resin-cured butyl rubber has found wide application in various industries due to its versatility and excellent resistance to ozone. It has been used in tire curing bladders, conveyor belts, gaskets, and heat-resistant packing compounds. By incorporating the octyl group, SP-1045P becomes compatible with various elastomers, allowing cement creation with diverse properties. Furthermore, the reactive methylol groups have the potential to serve as functional sites for a wide range of reactions, including their application with rosin in the printing ink market.
Form: Pastille
Specific gravity: 1.04
Softening point (ball and ring): 80°C–95°C
Methylol content: 8.0%–11.0%
Primary Chemistry: Octylphenol and formaldehyde phenolic resin
Heat-reactive resin
Excellent resistance to heat and compression set
Enhanced ozone resistance
Nonblooming and nonstaining
Poor resistance of butyl vulcanizates to heat or compression set
Low compatibility of phenolic resins when mixed with rubbers or elastomers
Tire curing bladders
Rubber conveyor belts and gaskets
Heat-resistant packing compounds
Printing inks
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