Title: Blends of butyl rubber and polymers of vinylidene chloride

Abstract: Saran blended with butyl rubber exhibits a good balance of melt extrudability and oxygen barrier properties.

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Inventors: Weinberg, Alan S. (Greenville, SC, US)
Gillio-Tos, Mario (Rho, IT)

Application Number: 858938
Filing Date: 1977-12-09
Publication_date: 1980-12-16
Assignee: W. R. Grace & Co. (Duncan, SC)
Primary Class(es): 428/335 426/127, 426/415, 428/336, 428/518, 428/519, 428/520, 523/408, 524/141
Other Classes:
US Patent Ref:

2511113	May, 1947	LaPiana	260/29.
3015640	Jan, 1962	Weaver	260/888.
3158664	Nov, 1964	Baer	260/888.
3166526	Jan, 1965	Butzler et al.	260/890.
3255144	Jun, 1966	Fefer et al.	260/29.
3597372	Aug, 1971	Cook	260/28.
3645838	Feb, 1972	Newman et al.	428/520.
3658947	Apr, 1972	Ito et al.	260/887.
3713965	Jan, 1973	Widiger et al.	428/518.
3741253	Jun, 1973	Brax et al.	428/520.
3879492	Apr, 1975	Bontinick	260/888.

Other Refs: 987823

Mar, 1965	GB.

Primary Examiner: Herbert, Jr., Thomas J.
Assistant Examiner:
Attorney: Toney; John J., Lee, Jr.; William D.