Acid-dyeable fibers of polyester modified with tetramethylpiperi

Details Acid-dyeable fibers of polyester modified with tetramethylpiperi Acid-dyeable fibers of polyester modified with tetramethylpiperi

1975-03-19

1977-01-04

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 77, C08G 6368

Patent

active

040011909

ABSTRACT:
Textile fibers or filaments having improved dyeability are prepared from linear polyesters modified with a minor proportion of 2,2,6,6,-tetramethylpiperidine groups attached in the polymer chain through oxyalkylene linkages at the 1 and 4 positions of the piperidine ring. Alkylene oxide condensates of 2,2,6,6,-tetramethylpiperidine glycols are shown to have adequate heat-stability and compatibility for incorporating in polyesters under conditions of condensation polymerization to form modified polyesters suitable for melt-spinning into desirable products.

REFERENCES:
patent: 2647104 (1953-07-01), Shivers
patent: 3624181 (1971-11-01), Munakata et al.

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