Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-06-07
1993-02-02
Seccuro, Jr., Carman J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 58, C08L 2306, C08L 2902
Patent
active
051838486
ABSTRACT:
A sealing composition for a container closure comprises a polymeric matrix material and its oxygen permeability is reduced by incorporating ethylene vinyl alcohol polymer into the composition. The composition can be in fluid or meltable form ready for application to a closure or it can be present as a deposit on the closure, for instance a gasket around the closure.
REFERENCES:
patent: 3857754 (1974-12-01), Hirata et al.
patent: 3931449 (1976-01-01), Hirata et al.
patent: 3975463 (1976-08-01), Hirata et al.
patent: 4293473 (1981-10-01), Eastman
patent: 4568529 (1986-02-01), Leconte
Samuel David N.
Williams Richard S.
Baker William L.
Hubbard John Dana
Seccuro, Jr. Carman J.
W. R. Grace & Co.,-Conn.
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