Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-02-13
2007-02-13
Choi, Ling-Sui (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S329100, C525S332600, C524S432000, C524S413000, C524S565000, C524S566000, C524S571000, C524S201000, C524S087000, C524S095000, C524S106000, C524S082000, C524S083000, C524S084000, C002S168000
Reexamination Certificate
active
10755676
ABSTRACT:
The invention is the manipulation of the zinc oxide content and sulfur content of nitrile butadiene rubbers and selected vulcanization conditions that can be achieved economically with common production facilities. The manipulation of these components affects the relaxation property of gloves formed by this material. Produced are gloves that have a relaxation property, higher than 50%, and a low modulus (approximately 3 Mpa). The glove maintains decent ultimate tensile strength (>20 Mpa) and elongation (>500%). The glove is produced by a vulcanization process, which lasts from 5 to 60 minutes at temperatures ranging from 300° F. to 400° F. The tensile strength and elongation are well above the ASTM requirements for medical gloves. The current ASTM requirements are ASTM D412-92. Thanks to sufficient vulcanization, the films produced provide satisfactory protection from viral penetration. The tearing strength is also better because of the lower modulus.
REFERENCES:
patent: 5014362 (1991-05-01), Tillotson et al.
patent: RE35616 (1997-09-01), Tillotson et al.
patent: 5872173 (1999-02-01), Anand
patent: 5881387 (1999-03-01), Merovitz et al.
patent: 6000061 (1999-12-01), Taneja et al.
patent: 6013727 (2000-01-01), Dharmarajan et al.
patent: 6031042 (2000-02-01), Lipinski
patent: 6673404 (2004-01-01), Yeh et al.
patent: 2002/0193488 (2002-12-01), Tao
patent: 2000-96321 (2000-04-01), None
patent: WO 00/21451 (2000-04-01), None
JP 2000-96321 (abstract in English).
Choi Ling-Sui
Gitler Stewart L.
Kent Evan M.
Lee Rip A.
Microflex Corporation
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