As a consequence, new vulcanisation accelerators,
referred to as ``safe amines'', were developed [19, 20].
The aim was to substitute chemical groups leading to the
formation of carcinogenic nitrosamines (methyl, ethyl,
morpholinyl, etc.) with either hardly nitrosable alkyl
groups containing tertiary carbon or phenyl groups
giving rise to non-carcinogenic nitrosamines
As a consequence, new vulcanisation accelerators,referred to as ``safe amines'', were developed [19, 20].The aim was to substitute chemical groups leading to theformation of carcinogenic nitrosamines (methyl, ethyl,morpholinyl, etc.) with either hardly nitrosable alkylgroups containing tertiary carbon or phenyl groupsgiving rise to non-carcinogenic nitrosamines
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