Elastomeric material for rubber articles
AssigneeReichhold Chemicals, Inc.
InventorsKanchan Ghosal, Venkataram Krishnan
Life of this patent
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Abstract
A polymer latex composition suitable for making rubber articles comprises about 80 to about 99 weight percent of a conjugated diene monomer; above 0 to about 10 weight percent of an unsaturated acid monomer; and from 0 to about 20 weight percent of an additional unsaturated monomer. The polymer latex composition has a glass transition temperature of no greater than about -50.degree. C.
Claims23
A crosslinked film formed from a polymer latex composition, said polymer latex composition comprising:
- about 80 to about 99 weight percent of an aliphatic conjugated diene monomer;
- above 0 to about 10 weight percent of unsaturated acid monomer;
- and
- from 0 to about 20 weight percent of an additional unsaturated monomer;
- wherein said crosslinked film has a glass transition temperature of no greater than about -50.degree. C. and a level of crosslinking such that the crosslinked film has a tensile strength of at least about 1000 psi, an elongation of at least about 600 percent, and a modulus at 100 percent elongation of no more than about 300 psi.
A glove comprising a crosslinked film formed from a polymer latex composition, the polymer latex composition comprising about 80 to about 99 weight percent of a conjugated diene monomer, above 0 to about 10 weight percent of unsaturated acid monomer, and from 0 to about 20 weight percent of an additional unsaturated monomer, wherein said crosslinked film has a glass transition temperature of no greater than about -50.degree. C. and a level of crosslinking such that the crosslinked film has a tensile strength of at least about 1000 psi, an elongation of at least about 600 percent, and a modulus at 100 percent elongation of no more than about 300 psi.
A method for making a glove comprising:
- contacting a mold in the shape of a glove with a coagulant;
- contacting the mold containing the coagulant with a polymer latex composition, the polymer latex composition comprising about 80 to 99 weight percent of a conjugated diene monomer, above 0 to 10 weight percent of an unsaturated acid monomer, and from 0 to about 20 weight percent of an additional unsaturated monomer, the polymer latex composition having a glass transition temperature of no greater than about -50.degree. C.;
- and
- curing the polymer latex composition which is present on the mold to form a glove from the composition, the glove having a tensile strength of at least about 1000 psi, an elongation of at least about 600 percent, and a modulus at 100 percent elongation of no more than about 300 psi.
Dependencies are inferred from the claim text.