735171-A is referenced by 5 patents.

The dye affinity of polyethylene terephthalate fibres, yarns, fabrics, films and like shaped articles is improved by heating them at 210 DEG C., or more, but less than 230 DEG C. During the heat treatment the articles may be allowed to shrink or be held under tension. Heating may be effected by molten metals, salts or kerosene, hot air, nitrogen or carbon dioxide, infra-red radiation or high-frequency heating, or by contact with a hot metal surface. In examples, dyeing is effected with dispersed dyestuffs. Specifications 672,449, [Group IV (a)], and 684,046 are referred to.ALSO:Polyethylene terephthalate fibres, yarns, fabrics, films and like shaped articles are given an increased dye affinity and increased resistance to shrinkage and creasing by heating them at 210 DEG C., or more, but less than 230 DEG C.; The heat treatment is applicable to articles which have been wholly or partly oriented by drawing, and during the heat treatment they may be allowed to shrink or be held under tension. Heating may be effected by molten metals, salts or kerosene, hot air, nitrogen or carbon dioxide, infra-red radiation or high-frequency heating, or by contact with a hot metal surface. To remove the stiffness of heat-treated fabrics, they may be subsequently washed, scoured or subjected to any other mechanical flexing operation. Specifications 672,449 and 684,046, [Group IV (c)], are referred to.

Title
Improvements in the treatment of aromatic polyester fibres, yarns, fabrics, films and like shaped articles
Application Number
GB19520012201 19520514
Publication Number
735171 (A)
Application Date
May 14, 1952
Publication Date
August 17, 1955
Inventor
Youings John Gordon
Marvin Denys Nicol
Assignee
Ici
IPC
D06P 05/20
D06M 13/00
D06P 05/20
D06M 13/53
D06M 13/52
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