(19)
(11) EP 0 264 869 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.02.1990 Bulletin 1990/07

(43) Date of publication A2:
27.04.1988 Bulletin 1988/17

(21) Application number: 87115223.7

(22) Date of filing: 17.10.1987
(51) International Patent Classification (IPC)4D04H 1/64
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 20.10.1986 US 921165

(71) Applicant: THE B.F. GOODRICH COMPANY
Akron Ohio 44313-1799 (US)

(72) Inventor:
  • Stanislawczyk, Vic
    Sheffield Lake Ohio 44054 (US)

(74) Representative: von Kreisler, Alek, Dipl.-Chem. et al
Patentanwälte von Kreisler-Selting-Werner Postfach 10 22 41
50462 Köln
50462 Köln (DE)


(56) References cited: : 
   
       


    (54) Nonwoven fabric with an acrylate interpolymer binder and a process of making the nonwoven fabric


    (57) Fibers treated with a novel latex containing a polymeric material of the present invention have an exceptional balance of physical properties. The novel latex is prepared by polymerizing an unsaturated dicarboxylic acid contained 4 to 10 carbon atoms with a copolymerizable monomer(s) and, optionally, a crosslinking monomer in the presence of an effective amount of a surfactant and initiator. In an preferred embodiment of the process, all of the unsaturated dicarboxylic acid is initially placed in the reactor, and a premix containing the copolymerizable monomer(s) and the crosslinking monomer is metered into the reactor. The unsaturated dicarboxylic acid is used an amount from about 1 to about 20 weight parts, the amount of the copolymerizable monomer is from about 70 to 98 weight parts, and the amount of the crosslinking monomer, which is optional is from about 0.52 to about 10 weight parts. The novel polymers have a Tg from about -20°C to about -60°C, a percent hysteresis loss of less than about 20% and exhibit a tensile strength of at least 300 psi and an elongation of at least 350%. When the novel latex is applied to the fibers, a nonwoven fabric having unique balance of properties is created.





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