(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 |
(22) |
Date of filing: 17.10.1987 |
|
(51) |
International Patent Classification (IPC)4: D04H 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) |
|
|
|
(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.
