Derivatives with a propyl instead of an allyl group
were less active or inactive.
g] value of PBFB was much higher than that of PBFA and PBFC, it was probably due to increasing of the crosslinking point of thermoset by introduction of allyl group
into BFB, which limited the mobility of polymer chains.
This suggests that the presence of allyl group can improve the solubility in acetone.
Thus, the exotherm was shifted to lower temperatures as the concentration of the allyl groups in the monomers was increased.
ArH'] refer to the proton numbers of allyl groups and aryl groups in HBP-AL, respectively.
g]) at 105[degrees]C and a exothermic peak at 264[degrees]C corresponding to the Claisen Rearrangement of the allyl groups , While the H-bonding between the residue phenolic OH groups would lead to a higher [T.
Frederic Blondel reports that he is surprised that he can thicken aqueous cosmetic formulations with a copolymer of acrylamide and acrylamidomethylsul-fonate (INCI Acryloyldimethyltaurate) crosslinked with an amine-based crosslinking agent that includes three allyl groups
Type II coagents may participate in crosslink formation through grafting at the allyl groups
, inter- and intra-molecular propagation reactions, or simply increasing the concentration of reactive pendant unsaturation (ref.
73) describes the synthesis of a styrene-acrylate latex containing allyl groups (see below) for post-application oxidative cure.
One approach involves the use of allyl methacrylate in the latex synthesis, employing conditions in which the allyl groups survive the emulsion polymerization reaction.
Tri-functional coagents (TAC and TAIC) may form crosslinks through the cyclopolymerization products, as well as grafting through pendant allyl groups
It could be seen that with increase of TAC, fraction absorbances of allyl groups decrease rapidly as a result of strong increase of crosslink density.
5 it can be concluded that during the vulcanization at elevated temperatures, the reactions of the allyl groups together with rearrangement of polymer to more stable isocyanurate structure were observed.
The degree of substitution of allyl groups was proportional to the degree of sodium-metallation of PMIA in a similar manner as benzyl bromide, as shown in Fig.
Allyl groups introduced in PMIA reacted easily with thiols under shielding from light.