Erema says it isn't seeking patents on the alloying
process because it believes that too much is known about it through prior technical publications.
The commercial Catalloy process is similar in concept to Himont's developmental Hivalloy technology except that where Catalloy is an olefinic alloying
process, Hivalloy products are made by co-reacting the base PP spherule with up to 50-60% by weight of non-olefinic monomers.
It's also clear alloying
and blending technology will not replace future research into inventing all-new polymers or supplant work to optimize existing single-resin grades.
Scandium has been effectively used as an alloying
element in aluminum in many applications in the former Soviet Union, including aerospace, due to the fact that the alloy exhibits increased strength, durability, plasticity and fatigue resistance.
Hivalloy is patended two-step alloying
technology that bonds vinyl monomers, like styrene, to the backbone of the PP polymer chain.
elements can cause the formation of fine pearlite during slow cooling from the austenitic region.
part of the Montecatini/Montedison group in Italy, presented a paper at NPE on a major new resin alloying
technology to produce new super-hard PP alloys--Hivalloy ("High-value alloy")--with enhanced properties like HDT of 275 F, notched Izod impact strength of 5.
Slag typically refers to high-temperature fluxing of refractory linings of furnaces/ladies and oxidation products from alloying
New abilities to tailor crystallization rates and improve process-ability, a plethora of chemical varieties, an expanded range of high-end performance in thermal and mechanical properties, and an accommodating nature with regard to alloying
and copolymerization, all mark thermoplastic polyesters as a dynamic engineering resin technology for the 1990s.
While various alloying
elements may alter the properties of cast iron, it is accomplished primarily through the crystallization of dissolved carbon into graphite.
Advances Reported in Alloying
In aluminum-silicon (Al-Si) hypoeutectic alloys, strontium is often added for modification of the Si structure during the alloying
Copolymerization and alloying
will drive advances in new engineering thermoplastics of the 1990s.
Besides hydrogen content, factors such as cooling rate, modification, alloying
elements, grain refinement and inclusion content play a role in forming porosity.
A polar-copolymer PP would have reactive or adhesive functionality, overcoming the usual inertness of PP and providing greater compatibility with other resins for alloying
or better wettability of fillers and reinforcements.