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
2004-05-14
2009-08-25
Choi, Ling-Siu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S387000, C525S388000
Reexamination Certificate
active
07579412
ABSTRACT:
The present invention relates to a process for preparing carboxyl-terminated polyisobutenes by ozonolysis of polyisobutenes terminated by an ethylenically unsaturated double bond.
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Kwon et al. “Synthesis and Characterization of Poly(isobutylene-b-pivalolactone) Diblock and Poly(pivalolactone-b-isobutylene-b-pivalolactone) Triblock Copolymers”, Macromolecules, vol. 35, pp. 3348-3357 2002.
Nemes et al. “Oxyethylation and carbonation of telechelic polyisobutylene anions”, Polymer Bulletin, vol. 24, pp. 187-194 1990.
Storey et al. “Synthesis and Characterization of beta, beta-Dimethyl-Branched Carboxylic Acid-Terminated Polyisobutylenes”, Polym. Prepr., vol. 38, No. 2, pp. 283-284 1997.
Groh Peter Werner
Ivan Bela
Karl Ulrich
Lange Arno
Mach Helmut
BASF - Aktiengesellschaft
Choi Ling-Siu
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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