Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-09-06
2005-09-06
Choi, Ling-Sui (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S237000, C525S240000, C525S242000, C525S194000, C525S088000
Reexamination Certificate
active
06939918
ABSTRACT:
The present invention provides a thermoplastic vulcanizate prepared by a process comprising the steps of dynamically vulcanizing rubber within a blend that includes the rubber and a thermoplastic resin, where the rubber comprises an elastomeric copolymer of ethylene, at least one α-olefin, and optionally one or more diene monomers, where the elastomeric copolymer is characterized by having a crystallinity, as measured by differential scanning calorimetry, of less than 10 J/g, an ethylene content that is less than 90 mole percent based upon the entire copolymer, a weight average molecular weight that is greater than about 20,000 as measured by GPC with polystyrene standards, a molecular weight distribution that is less than 7, and an ethylene compositional distribution that is less than about 4 percent for the closest 90 percent of fractioned samples.
REFERENCES:
patent: 4130535 (1978-12-01), Coran et al.
patent: 4843129 (1989-06-01), Spenadel et al.
patent: 4985502 (1991-01-01), Izumi et al.
patent: WO 97 36741 (1997-10-01), None
Cheng Jianya
Datta Sudhin
Ellul Maria D.
McDaniel Paul
Wang Kang-Bo
Advanced Elastomer Systems L.P.
Choi Ling-Sui
Muller William G.
LandOfFree
Thermoplastic elastomers having improved low temperature... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermoplastic elastomers having improved low temperature..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoplastic elastomers having improved low temperature... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3414659