FR chemicals, which can cause swelling, hydrolyzing, oxidizing, and in general depolymerize
wood polymers, cause a loss in strength properties due to wood fiber network degradation (LeVan and Winandy 1990).
(break the rubber chains) the surface, and some coat the surface to help it blend into and adhere to the fresh compound.
For example, it is difficult to control the cross-linking rate of PDMS and its storage stability; the materials will turn yellow easily, depolymerize
or degrade in hot-air conditions [11, 18].
Cyclics will take standard PBT resin produced by BASF there and partially depolymerize
it into lower-MW CBT resin.
This is done by spraying the flakes with a caustic soda solution, then heating them in a rotary oven to depolymerize
the surface layer.
Although isopropyl alcohol is suitable for washing materials, it is not a useful solvent for making a silicone dispersion because under certain circumstances it can react with silicone to depolymerize
The facility employs a proprietary process to depolymerize
polyester-based plastics into basic chemical building blocks and then repolymerize them into plastics for the same or new applications.
Important side reactions mentioned earlier which depolymerize
the poly(amic acid) chain regenerating anhydride can reach important levels at higher temperatures and conversion levels.
Acid catalysts ere utilized in early efforts to depolymerize
nylon 6 to caprolactam, and several processes utilizing such catalysts have emerged from these efforts.
After charging the barrel, a "heat-soak" cycle of 10-15 min allows the heat-activated chemical reaction to partially depolymerize
the residue resin.
The increased thermal stability of copolymer M0 could be due to the blocking action of BA sequences, which unlike the PMMA chain does not depolymerize
below 300 [degrees] C.
The limited ability to depolymerize
crystalline cellulose is the most important barrier to increasing the yield of sugars from wood hydrolysis and has been the barrier to developing a profitable wood-based ethanol process for a century or more.