C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/3070
C08L 53/00 (2006.01) C08K 5/00 (2006.01) C08K 5/01 (2006.01) C08L 25/16 (2006.01) C08L 51/06 (2006.01) C08L 9/00 (2006.01)
Patent
CA 1047191
ABSTRACT OF THE DISCLOSURE Plasticized thermoplastic copolymer composition are dis- closed wherein the copolymer is selected from the group consisting of block copolymers having the general formulae (I) A-B-A, (II) A-B-A-B-A and (III) xB[A-B]n-yA and graft copolymers having the general formula (IV) Image , wherein m and n are integers greater than or equal to 2; x and y are 0 or 1, and y is 0 when n is 2; and A and B are mutually incompatible thermoplastic vinyl aromatic polymers blocks selected from the group of poly(alkyl styrene), poly(.alpha.-methyl stryene) and poly(alkyl.alpha.-methyl styrene) having a solubility parameter difference of greater than 0.7, each block having a molecular weight of at least 5000, a glass transition temperature of at least 35°C and provided the end block B segments in formula (III) do not exceed 35% by weight of the total amount of B segments present in the copolymer; and the plasticizer is selected from the group consisting of plasticizers having a solubility parameter within 1.2 units of the solubility parameter of said B polymer block, and the solubility parameter of said plasticizer is closer to the solubility parameter of said b block than said A block. These plasticized phase separated block copolymers have a combination of good strength and elastomeric behavior, not found in the prior art plasticized copolymers.
207791
Lundberg Robert D.
Makowski Henry S.
LandOfFree
Plasticized thermoplastic block and graft copolymers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plasticized thermoplastic block and graft copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasticized thermoplastic block and graft copolymers will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-862701