C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 279/00 (2006.01)
Patent
CA 2552761
It has been discovered that improved polystyrene products, such as high impact polystyrene (HIPS), may be obtained by polymerizing styrene with a diene polymer in the presence of at least one multifunctional initiator. The presence of the multifunctional initiator tends to cause more branched structures in the polystyrene. Unexpectedly, the ratio of % gel to % rubber (G/R or rubber phase volume) increases as the swell index increases which is the opposite of the conventional trend. Additionally, acceptable G/R values can be achieved at increased polymerization rates with these initiators.
On a découvert, dans la présente invention, que des produits de polystyrène amélioré, tel que le polystyrène antichoc (HIPS), peuvent être obtenus en polymérisant du styrène à l~aide d'un polymère diène en présence d'au moins un initiateur multifonctionnel. La présence de l~initiateur multifonctionnel tend à créer plus de structures ramifiées dans le polystyrène. Le rapport du % de gel au % de caoutchouc (G/C ou volume en phase caoutchouc) augmente, de manière inattendue, quand l'indice de gonflement augmente, ce qui est le contraire de la tendance habituelle. En outre, des valeurs G/C acceptables peuvent être atteintes à des taux de polymérisation supérieurs grâce à ces initiateurs.
Blackmon Kenneth Paul
Sosa Jose M.
Fina Technology Inc.
Gowling Lafleur Henderson Llp
LandOfFree
Use of tetrafunctional initiators to improve the rubber... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Use of tetrafunctional initiators to improve the rubber..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of tetrafunctional initiators to improve the rubber... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1778793