Inhibition of deterioration of rubbers by hydroaromatics

Journal Article · Sun Feb 28 23:00:00 EST 1993 · Pollution Engineering; (United States)

DOI:https://doi.org/10.1002/app.1993.070470520· OSTI ID:6784052

Kubo, Junichi ^[1]

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1. Nippon Oil Co., Naka-ku (Japan)

Based on the results obtained from previous works, which concluded that hydrogen donating hydroaromatics can be available as radical scavengers in inhibiting the deterioration of hydrocarbon products at lower oxygen partial pressure, a hydroaromatic type inhibitor which contains various hydroaromatics as its main components produced from coal tar fraction was examined by adding it to natural rubber (NR) and styrene-butadiene rubber (SBR). It was found that the inhibitor was as effective as the conventional amine-type inhibitor. From practical viewpoint, heavy hydroaromatics from petroleum (HHAP) was produced by the hydrogenation of the highly aromatic oil from the heavy fraction of petroleum to improve the physical properties of the previous inhibitor from coal tar fraction. From the deterioration tests for NR, SBR, and chloroprene (CR), the following results could be obtained: (1) HHAP showed excellent inhibiting abilities toward NR and CR, exceeding the conventional inhibitor; (2) inhibiting effect toward SBR could be recognized, viscosity and flex cracking were improved by the addition of HHAP. From these results, the hydrogen donation from hydroaromatic is considered to be effective in inhibiting the deterioration of rubbers.

• OSTI ID: 6784052
• Journal Information: Pollution Engineering; (United States), Journal Name: Pollution Engineering; (United States) Vol. 25:5; ISSN PLENBW; ISSN 0032-3640
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AROMATICS
CHEMICAL REACTIONS
DECOMPOSITION
ELASTOMERS
HYDROCARBONS
HYDROGENATION
INHIBITION
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDATION
PHYSICAL PROPERTIES
POLYMERS
REDOX REACTIONS
REDUCTION
RUBBERS