acid acceptor

acid acceptor

[′as·əd ək′sep·tər]
(organic chemistry)
A stabilizer compound added to plastic and resin polymers to combine with trace amounts of acids formed by decomposition of the polymers.
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References in periodicals archive ?
To solve this problem, Yokohama Rubber mixed an acid acceptor into the polyamide resin to enable it to capture and hold the acid runoff.
Haistab 1214 is a nontoxic acid acceptor for rigid PVC that reportedly improves the performance of organotin heat stabilizers in extruded products, such as vinyl siding or profile.
Users gain the flexibility of producing a wide range of end-use tailored compounds from either reactor flake or granule or from a basic compounded pellet containing only antioxidant and acid acceptor.
The optimization of the acid acceptor system, particularly the amount of magnesium oxide used (refs.
HSA 10 is a micronized, high activity MgO for use as a scorch retarder in chloroprene and fluoroelastomers, as a thickening agent for SMC/BMC, and as an acid acceptor in halogenated and chloroprene adhesives.
If the next higher UL rating, 105 [degrees] C, is desired, this is also readily accomplished (table 4) by using a less volatile plasticizer, a more efficient acid acceptor, and an antioxidant which will not interfere with a peroxide cure.
Additional process factors that increase costs are rheological variability due to hygroscopic acid acceptors, mold sticking and difficulty dispersing an additional compound ingredient, calcium hydroxide.
A commercially available fluoroelastomer material with a fluorine content of 66% was compounded with acid acceptors and fillers.
Acid acceptors improve compression set and stabilize the material without post curing.
The fluoroelastomer fomulation consisted of fluoroelastomer, carbon black, acid acceptors and a wax.
This would then affect the activity of the acid acceptors, which would change the cure rate.
Fluoroelastomer cure systems typically contain amines as the primary crosslinking agent and metal oxides as acid acceptors.