Investigation of the accelerated sulfur vulcanization of polydienes 1 - Reaction products of vulcanization of NR with CBS/S

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Mosch A

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Material type: Text

TextPublication details: Kautschuk Gummi Kunststoffe 2003Description: 184-189Subject(s):

Summary: The curing process of NR with different CBS/S- ratios was studied in order to get more information about the mechanism of the accelerated sulfur vulcanization. Time dependent collected extracts of the vulcanizates were analyzed by means of HPLC-MS and HPLC-UV. The MS-analysis shows the existence of dibenzothiazolyl-polysulfides during the scorch period. Quantitative analysis of the soluble reaction products demonstrates the influence of the sulfur-accelerator-ratio to the dispoportion of the accelerator and the rate of the crosslinking reaction.

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Item type	Current library	Vol info	Status
Journals	RRII Library Rubber chemistry	Volume 56, Issue 4	Journals

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The curing process of NR with different CBS/S- ratios was studied in order to get more information about the mechanism of the accelerated sulfur vulcanization. Time dependent collected extracts of the vulcanizates were analyzed by means of HPLC-MS and HPLC-UV. The MS-analysis shows the existence of dibenzothiazolyl-polysulfides during the scorch period. Quantitative analysis of the soluble reaction products demonstrates the influence of the sulfur-accelerator-ratio to the dispoportion of the accelerator and the rate of the crosslinking reaction.

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