Stabilization of polyethylene terephthalate-polyoxyethylene tere

Details Stabilization of polyethylene terephthalate-polyoxyethylene tere Stabilization of polyethylene terephthalate-polyoxyethylene tere

1984-09-04

1986-02-11

Lieberman, Paul

Compositions

Durable finishes for textile materials, or processes of...

Oil or water repellent or soil resistant or retardant

252 89, 252551, 252DIG2, 525173, D06M 502

Patent

active

045697728

ABSTRACT:
Polyethylene terephthalate-polyoxyethylene terephthalate soil release promoting polymers, which have been found to be subject to loss of soil release promoting properties on storage in contact with alkaline material, such as builder salts for synthetic organic detergents, are stabilized by melting them together with a water soluble polyacrylate and subsequently converting the melt to solid particles which contain the PET-POET polymer and polyacrylate in intimate contact. Preferably the melt is at a temperature above 70.degree. C., such as within the range of 70.degree. to 150.degree. C., the melt is solidified by cooling and the solid product resulting is cryogenically size reduced to desired particle size and flake shape, preferably such as will pass through a No. 10 sieve, U.S. Sieve Series.

REFERENCES:
patent: 3557039 (1971-01-01), McIntyre et al.
patent: 3893929 (1975-07-01), Basadue
patent: 3909476 (1975-09-01), Mandell, Jr.
patent: 3959230 (1976-05-01), Hays
patent: 3962152 (1976-06-01), Nicol et al.
patent: 3993830 (1976-11-01), Dickson et al.
patent: 4116885 (1978-09-01), Derstadt et al.
patent: 4125370 (1978-11-01), Nicol

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