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
2005-10-25
2005-10-25
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...
C525S370000, C525S333800, C525S361000, C525S387000
Reexamination Certificate
active
06958373
ABSTRACT:
Polymeric materials are recycled by transformation to useful chemicals by oxidization in the liquid phase using acetic acid as a solvent and a metal bromide catalyst.
REFERENCES:
patent: 3423382 (1969-01-01), Chibnik et al.
patent: 3463767 (1969-08-01), Bush et al.
patent: 5004797 (1991-04-01), Rohrscheid et al.
patent: 5386055 (1995-01-01), Lee et al.
patent: 5414113 (1995-05-01), Broeker et al.
patent: 5652311 (1997-07-01), Hardy et al.
patent: 5753780 (1998-05-01), Stover et al.
patent: 5789636 (1998-08-01), Holighaus et al.
patent: 5814707 (1998-09-01), Frechet et al.
patent: 5849964 (1998-12-01), Holighaus et al.
patent: 5886057 (1999-03-01), Harvie et al.
patent: 5977193 (1999-11-01), Corbin et al.
patent: 6018085 (2000-01-01), Ponsford et al.
patent: 0636640 (1995-02-01), None
patent: WO 94/10215 (1994-05-01), None
Partenheimer, Methodology and scope of metal/bromide autoxidation of hydrocarbons, Catalysis Today, 23, 69-158 (1995).
Chemical Abstracts, vol. 117 No. 20, Columbes, Ohio, p. 17 XP000376833, 1992.
Toshiaki Yoshioka, Keiichi Furukawa and Akitsugu Okuwaki, Chemical recycling of rigid-PVC by oxygen oxidation in NaOH solutions at elevated temperatures, Polymer Degradation and Stability, 67 (2000) 285-290.
W. Partenheimer, Methodology and scope of metal/bromide autoxidation og hydrocarbons, Catalysis Today, 23 (1995) 69-158.
PCT/US01/23320, International Search Report dated Feb. 22, 2002.
Choi Ling-Sui
E. I. du Pont de Nemours and Company
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