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US 2019/0292352 A1Published application
Liquid and meltable solid grades of scorch protected peroxides
AssigneeArkema Inc.
InventorsLeonard H. Palys, William P. Pavlek, Peter R. Dluzneski
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Abstract
Embodiments of organic peroxide formulations provide longer scorch time protection and require fewer additives. The peroxide formulations may include, for example, at least one organic peroxide, at least one nitroxide-containing compound (e.g., 4-hydroxy-TEMPO), and at least one quinone-containing compound (e.g., mono-tert-butylhydroquinone).
Claims17
A liquid or meltable solid organic peroxide formulation for curing solid elastomer compositions, said formulation comprising:
- at least one organic peroxide,
- at least one nitroxide-containing compound which is at least one or more of the following:
- 4-hydroxy TEMPO (4-OHT) and TEMPO (2,2,6,6-tetramethylpiperidine 1-oxyl), and
- at least one quinone-containing compound which is at least one or more of the following:
- mono-tert-butylhydroquinone (MTBHQ);
- hydroquinone;
- hydroquinone mono-methyl ether (HQMME);
- mono-t-amylhydroquinone and di-t-amyl hydroquinone,
- wherein said organic peroxide cures said solid elastomers.
6 more elements
A liquid or meltable solid organic peroxide formulation for curing a solid elastomer composition, said formulation comprising:
- at least one organic peroxide,
- at least one nitroxide-containing compound which is 4-hydroxy TEMPO (4-OTH),
- at least one quinone-containing compound which is at least one or more of the following:
- mono-tert-butylhydroquinone (MTBHQ);
- hydroquinone;
- hydroquinone mono-methyl ether (HQMME);
- mono-t-amylhydroquinone and di-t-amyl hydroquinone, and
- at least one crosslinking coagent comprising a moiety having at least two functional groups, wherein said functional groups are selected from the groups consisting of allylic, methacrylic, acrylic and may be the same or different.
5 more elements
Dependencies are inferred from the claim text.