Novel rubber connectors and other rubber parts for use in human infusion sets and rubber

Claim 2

A medically acceptable rubber composition to make into rubber products for contact with medical, drug and food products, said composition when cured having high tear strength and being substantially inert, said composition including at least 40% by weight of rubber comprising a mixture of brominated isobutylene-isoprene copolymer and a material selected from the group consisting of natural rubber and synthetic cis-polyisoprene, said composition further comprising a well-mixed minor amount of a polyolefin, with said composition being cured under static conditions at vulcanization temperature, and an effective amount of peroxide curing agent having been added to said composition at a lower temperature prior to curing, to achieve substantially complete cross-linking of the rubber and the polyolefin.

Claim 3

The rubber composition of claim 1 wherein said rubber comprises a mixture of brominated isobutyleneisoprene copolymer, natural rubber and synthetic cis-polyisoprene.

Claim 4

The rubber composition of claim 1 further including a filler.

Claim 5

The rubber composition of claim 3, wherein said rubber is present in an amount by weight of 60% and preferably 70%.

Claim 6

The rubber composition of claim 3, wherein the high density polyolefin is present in an amount by weight of at least about 4% and preferably 8% to a maximum of about 20%.

Claim 7

The rubber composition of claim 3, wherein said filler is present in amount by weight of at least about 4% and preferably 8% to a preferred maximum of about 20%.

Claim 8

The rubber composition of claim 3, wherein said rubber is a mixture of natural rubber, synthetic cis-polyisoprene and brominated isobuylene-isoprene copolymer.

Claim 9

The rubber composition of claim 3, comprised of the following: ______________________________________ LBS. OZS. ______________________________________ Synthetic cis-polyisoprene 38 0 Natural Rubber 50 0 Brominated Isobutylene-Isoprene 10 0 Copolymer High Density Polyethylene 10 0 Trimethylolpropane Trimethacrylate 1 0 Activator and Co-Agent Silicone Gum 1 0 Filler 20 0 Low Molecular Weight Polyethylene 2 0 Microcrystalline Petroleum Wax 1 0 White Petrolatum 1 0 Peroxide 1 0 ______________________________________

Claim 10

The rubber composition of claim 1, wherein the well mixed rubber and polyolefin is extrudable.

Claim 11

The rubber composition of claim 1, cured in a mold.

Claim 12

The composition of claim 3, and further including additives to improve processing properties, age resistance and heat resistance and at least one plasticizer, activator and stabilizer.

Claim 13

The composition of claim 3 of which possesses translucent properties.