An elastomer which is the reaction product of: (a) at least one organic polyisocyanate; (b) at least one compound containing a plurality of isocyanate-reactive groups and having a molecular weight greater than 600, and (c) at least one chain extender having a molecular weight not exceeding 600, wherein at least one of components (a) and (b) is or includes a compound having a molecular weight greater than 600 and at least two reactive sites, at least one of which sites contains at least two isocy...

Elastomers are prepared from high molecular weight relatively rigid difunctional compounds and low molecular weight aliphatic compounds selected from diacids, diols, diamines, hydroxyacids and aminoacids.

Elastomers are prepared from high molecular weight relatively rigid difunctional compounds and low molecular weight compounds selected from diacids, diols, diamines, hydroxyacids, hydroxyamines and aminoacids.

A polyisoprene elastomer has a polyisoprene content with an average molecular weight in the range of 15,000 to 70,000 and preferably 25,000 to 50,000. This has been cross-linked with an unsaturated aromatic compound and cured with a sulfur or peroxide curing system. The elastomer has an extremely low compression set (0 to 5%) and an extremely low durometer (Shore A, 0 to 20). The elastomer is lightweight, soft, flexible and durable and its properties make its shock-absorbing and shock-attenuatin...

A polyisocyanate-based elastomer having a ratio of the storage modulus (E') at 20.degree. C. and the storage modulus (E') at 120.degree. C. of between 0.75 and 1.5, a tan .delta. at 100.degree. C. of less than 0.1 and a maximum value of the tan .delta. of more than 0.8, the tan .delta. being the ratio of the loss modulus (E'') and the storage modulus (E').

This invention discloses a rubbery polymer which is comprised of repeat units that are derived from (1) at least one conjugated diolefin monomer, and (2) at least one functionalized monomer having the structural formula: ##STR1## wherein R represents an alkyl group containing from 1 to about 10 carbon atoms or a hydrogen atom, and wherein R.sup.1 and R.sup.2 can be the same or different and represent hydrogen atoms or a moiety of the structural formula: ##STR2## wherein the R.sup.3 groups in rep...

This invention discloses a rubbery polymer which is comprised of repeat units that are derived from (1) at least one conjugated diolefin monomer, and (2) at least one functionalized monomer having of the structural formula: ##STR1## wherein R represents an alkyl group containing from 1 to about 10 carbon atoms or a hydrogen atom, and wherein R.sup.1 and R.sup.2 can be the same or different and represent hydrogen atoms or a moiety selected from the group consisting of ##STR2## wherein R3 groups c...

This invention discloses a rubbery polymer which is comprised of repeat units that are derived from (1) at least one conjugated diolefin monomer, and (2) at least one functionalized monomer having of the structural formula: ##STR1## wherein R represents an alkyl group containing from 1 to about 10 carbon atoms or a hydrogen atom, and wherein R.sup.1 and R.sup.2 can be the same or different and represent hydrogen atoms or a moiety selected from the group consisting of ##STR2## wherein R3 groups c...

This invention discloses a rubbery polymer which is comprised of repeat units that are derived from (1) at least one conjugated diolefin monomer, and (2) at least one functionalized monomer having of the structural formula: ##STR1## wherein R represents an alkyl group containing from 1 to 15 about 10 carbon atoms or a hydrogen atom, and wherein R.sup.1 and R.sup.2 can be the same or different and represent hydrogen atoms or a moiety selected from the group consisting of ##STR2## wherein R3 group...

This invention discloses a rubbery polymer which is comprised of repeat units that are derived from (1) at least one conjugated diolefin monomer, and (2) at least one functionalized monomer having of the structural formula: ##STR1## wherein R represents an alkyl group containing from 1 to about 10 carbon atoms or a hydrogen atom, and wherein R.sup.1 and R.sup.2 can be the same or different and represent hydrogen atoms or a moiety of the structural formula: ##STR2## wherein the R.sup.3 groups in ...