Continuous production of polyester filaments

Details Continuous production of polyester filaments Continuous production of polyester filaments

1989-03-08

1990-07-31

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528296, 528300, 528304, 5283086, 525437, 525444, 264 78, 2641761, 264211, C08G 6302

Patent

active

049451510

ABSTRACT:
When varied spin-oriented polyester filaments are produced over the course of time in a continuous multi-machine operation from polymeric precursors, the dyeabilities of the varying products are controlled and adjusted by adding small amounts of a chain-branching agent, such as a derivative of trimellitic acid, preferably trishydroxyethyl trimellitate. The process conveniently lends itself to automation of the control and adjustment operation.

REFERENCES:
patent: 4025592 (1977-05-01), Bosley et al.
patent: 4092299 (1978-05-01), MacLean et al.
patent: 4113704 (1978-09-01), MacLean et al.

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