Dimensionally stable polyester melt blown web

Details Dimensionally stable polyester melt blown web Dimensionally stable polyester melt blown web

1989-06-02

1991-04-23

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

5283082, 528493, 528494, 528495, 528502, 528503, 428 361, 428113, 428287, C08G 6302

Patent

active

050101650

ABSTRACT:
A dimensionally stable polyester melt blown web composition is disclosed. The polyester melt blown web is obtained by contacting the web with a solvent, and drying the web. The solvents which are used have total solubility parameters (S.sub.o) of 8.5 to 12.0 (cal/cm.sup.3).sup.1/2, solubility parameter component due to hydrogen bonding (S.sub.h) of 0.5 to 5.5 (cal/cm.sup.3).sup.1/2 and solubility parameter component due to polar forces (S.sub.p) of 0.5 to 7.0 (cal/cm.sup.3).sup.1/2). The polyesters used for such melt blown webs include poly(ethylene-terephthalate), poly(cyclohexylene dimethylene terephthalate) and blends and copolymers of these polymers.

REFERENCES:
patent: 3849241 (1974-11-01), Butin et al.
patent: 4847125 (1989-07-01), Schwartz
Chemical Reviews, 1975, vol. 75, No. 6, p. 744, "Solubility Parameters".
Polymer Handbook, 2nd Edition, Edited by J. Brandrup and E. H. Immergut, John Wiley & Sons, Section, pp. 337 through 359.

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