Chemically cross-linked elastomers formed by michael addition and compositions comprising such elastomers

A gel composition comprising:

• a) a first reactant comprising one or more molecules, wherein each of the one or more molecules comprises two or more Michael acceptor functional groups;
• b) a second reactant comprising one or more molecules, wherein each of the one or more molecules comprises a Michael donor functional group capable of reacting with a Michael acceptor group to form 1,4-addition products, wherein the Michael donor functional group comprises a primary amine or a carbon bonded to two Michael donor hydrogen atoms;
• c) an optional reaction catalyst;
• and
• d) a topically acceptable carrier fluid, at a concentration of between 60% (w/w) and 99.9% (w/w) of the gel composition,
• wherein the topically acceptable carrier fluid is selected from the group consisting of esters, triglycerides, hydrocarbons, silicone fluids, and combinations thereof, and the topically acceptable carrier fluid is acceptable for cutaneous surfaces.

A gel composition comprising a Michael addition elastomer being the reaction product of:

• a) a first reactant comprising one or more molecules, wherein each of the one or more molecules comprises two or more Michael acceptor functional groups;
• b) a second reactant comprising one or more molecules, wherein each of the one or more molecules comprises a Michael donor functional group, wherein the Michael donor functional group comprises two or more Michael active hydrogen atoms;
• c) an optional reaction catalyst;
• and
• d) a topically acceptable carrier fluid, at a concentration of 60% (w/w) to 99.9% (w/w) of the gel composition,
• wherein the topically acceptable carrier fluid is selected from the group consisting of esters, triglycerides, hydrocarbons, silicone fluids, and combinations thereof, and the topically acceptable carrier fluid is acceptable for cutaneous surfaces.