Abstract:

Dehydration of the end hydroxyl group of butanol polyether used as high-speed spinning finishes would occur under situations of alkalis or high temperatures, which lead to polyether’s structure and high-speed spinning finishes’ performances changes. This paper investigated terminal group’s stability of butanol polyether during processes of production, transportation, storage and usage. Results show that the end hydroxyl group of butanol polyether tends to be more unstable within oxygen. The increase range of double bond content within oxygen is 0.0085%-0.0492% (1.0-5.4 times higher than that of the original polyether), which is obviously larger than that within nitrogen. The polyether appears to be more unstable under high temperatures. The double bond content increases considerably with the growth in high temperatures showing 8.1-14.1 times higher than that of the original butanol polyether. The increase range of double bond content is 0.0744%-0.1298%. Olefine aldehyde was introduced through the Aldol condensation reaction in alklinities and the maximum increase of double bond content is 1.2-2.8 times higher compared with the original polyether. The increase range of double bond content is (0.0114%-0.0255%)