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
2008-01-29
2008-01-29
Harlan, Robert D. (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...
C525S186000
Reexamination Certificate
active
10694584
ABSTRACT:
The present invention relates to anti-aging agents based on organic compounds containing conjugated azadiene groups, which are capable of providing rubber vulcanizates with long-term protection against thermal aging, fatigue and aging as a result of the effects of oxygen. The anti-aging agents according to the present invention are further characterized in that they are hardly ever extracted from the vulcanizates by water, oils and/or gasolines or hydraulic fluids.
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U.S Appl. No. 09/850,511, filed May 7, 2001 title: “Covulcanizable Anit-Aging Agents”.
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Barmettler, Peter et al: “Acid-catalyzed ′3, 3! -sigmatropic rearrangements of N-propargylanilines” Helvetica Chimica Acta (1990), 73(6), 1515-73, XP008026042 Seite 1518: Verbindungen 16-19; Seite 1540: Verbindung 104.
Al-Dilaimi, Sobhi K. et al: “Apparent stability constants and thermodynamic functions of Cinnamylideneaniline Schiff base complexes with aluminum chloride” Thermochimica Acta (1986), 97, 267-70, XP008026038, Seite 268, Tabelle 1.
Harlan Robert D.
Kohncke Nicanor A.
LANXESS Deutschland GmbH
Seng Jennifer R.
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