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US 6,797,765 B2Granted
Gelatinous elastomer
AssigneeEdiZONE, LC
InventorTony M. Pearce
Life of this patent
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Abstract
An improved gelatinous elastomer is disclosed which uses an A-B-A triblock copolymer having a molecular weight in the range of 125,000 to 175,000, or about 150,000, and a plasticizer.
Claims29
An elastomeric material comprising:
- a plasticizer selected from the group consisting of oils and polybutenes, and
- a SEEPS triblock copolymer of the general configuration A-B-A;
- wherein the plasticizer and copolymer are mixed to form a gel;
- wherein A is selected from the group consisting of monoalkenylarene polymers;
- wherein B is a hydrogenated polymer including a plurality of hydrogenated isoprene monomers and a plurality of hydrogenated butadiene monomers;
- wherein said SEEPS triblock copolymer has a weight average molecular weight of about 125,000 to 175,000
- wherein said SEEPS triblock copolymer has a solution viscosity of about 50 to about 150 cps @ 30 degrees C. when in a 7.5% solution in toluene;
- wherein said plasticizer associates with said hydrogenated polymer B;
- wherein said SEEPS triblock copolymer has a measurable percent elongation at break;
- wherein said plasticizer tends to increase the percent elongation at break of said SEEPS triblock copolymer;
- wherein said SEEPS triblock copolymer has a rigidity measurable on the Gram Bloom scale;
- and
- wherein said plasticizer tends to decrease the Gram Bloom rigidity of said SEEPS triblock copolymer.
10 more elements
An elastomeric material comprising:
- a plasticizer and
- a SEEPS triblock copolymer of the general configuration A-B-A and having a weight average molecular weight of from about 125,000 to 175,000;
- wherein A is a non-elastomeric polymer and B is a hydrogenated polymer selected from the group consisting of ethylene/propylene, ethylene/butylene, and a combination thereof;
- wherein the combined weights of said ethylene/propylene and said ethylene/butylene comprise more than about 50 weight percent of said hydrogenated polymer B;
- wherein said plasticizer associates with said hydrogenated polymer B;
- wherein said SEEPS triblock copolymer has a measurable percent elongation at break;
- wherein said plasticizer tends to increase the percent elongation at break of said SEEPS triblock copolymer;
- wherein said SEEPS triblock copolymer has a rigidity measurable on the Gram Bloom scale;
- and
- wherein said plasticizer tends to decrease the Gram Bloom rigidity of said SEEPS triblock copolymer.
7 more elements
An elastomeric material comprising:
- a SEEPS triblock copolymer elastomer of the configuration A-B-A and having a weight average molecular weight of from about 125,000 to 175,000, block A being a non-elastomeric polymer and block B being an elastomeric polymer, and
- a plasticizer combined with said SEEPS triblock copolymer elastomer to form a visco-elastic material, said plasticizer being compatible with said B block.
Dependencies are inferred from the claim text.