Continuous process for producing, by irradiation, a microporous rubber composition suitable for battery separators
In a process for producing microporous polymeric material, the improvement comprises: compounding a sulfur free curable composition of a compound selected from the group consisting of curable natural rubber, polyisoprene, styrene-butadiene, nitrile-butadiene, and ethylene-propylene rubber, or a mixture of same with a curative for curing the composition by electron beam irradiation, said curative therefor being an ethylenically unsaturated curing agent of acrylate or methacrylate having more than one acrylate or methacrylate group present, or mixtures thereof, and rehydrated silica; continuously forming a shape of said composition; and continuously curing said formed shape by irradiation at an irradiation level of less than 10 megarads. The process as defined in claim 1, wherein during said continuous forming of said shape the curable composition is extruded and in shaping to final form, backed with a sheet of an inert polymer, non-woven, heat-bonded web.
- Assignee:
- Amerace Corp
- Patent Number(s):
- US 4213815
- OSTI ID:
- 5017923
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ACRYLATES
AROMATICS
BATTERY SEPARATORS
BEAMS
BUTADIENE
CARBOXYLIC ACID SALTS
COPOLYMERS
DIENES
ELASTOMERS
ELECTRON BEAMS
FABRICATION
FLEXIBILITY
HYDROCARBONS
IRRADIATION
LEPTON BEAMS
MECHANICAL PROPERTIES
NATURAL RUBBER
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PARTICLE BEAMS
POLYENES
POLYETHYLENES
POLYISOPRENE
POLYMERS
POLYOLEFINS
POLYPROPYLENE
POROSITY
RUBBERS
SHEETS
STYRENE
TENSILE PROPERTIES