Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2006-03-28
2006-03-28
Mulcahy, Peter D. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S236000, C524S251000, C524S515000, C524S528000, C525S050000, C525S061000, C525S235000, C525S241000
Reexamination Certificate
active
07019058
ABSTRACT:
The invention provides a method for increasing the viscosity of C4–C7isoolefin copolymers including halomethylstyrene derived units by mixing the copolymer with a hindered amine or phosphine of the structure R1R2R3N or R1R2R3P wherein R1, R2and R3are preferably lower and higher alkyl groups. The resulting ionically associated, amino or phosphine modified elastomers are used to prepare thermoplastic elastomer blend compositions, including dynamically vulcanized compositions, containing more finely dispersed elastomers which results in compositions having improved mechanical properties.
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Duvdevani Ilan
Lyon Michael K.
Tsou Andy H.
Wang Hsien-Chang
Arechederra Leandro
ExxonMobil Chemical Patents Inc.
Faulkner Kevin M.
Mulcahy Peter D.
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