Patent ID: 8193125

Claim:
A crosslinked glycerol or oligoglycerol ester comprising the reaction product of a non-crosslinked glycerol or oligoglycerol ester and a crosslinking agent, wherein the non-crosslinked glycerol or oligoglycerol ester comprises the reaction product of an (A) acid phase comprising an acid selected from (a1) a fatty acid, or (a2) a dicarboxylic acid, or (a3) a dimeric fatty acid, or (a4) an oligomeric fatty acid, or (a5) a hydroxy fatty acid or (a6) a mixture of at least two thereof, and an (B) alcohol phase comprising an alcohol selected from (b1) monoglycerol, or (b2) diglycerol, or (b3) triglycerol, or (b4) oligoglycerol made up of more than three glycerol units, or (b5) an alkoxylate of glycerols (b1), (b2), (b3) or (b4), or (b6) a mixture of at least two thereof, to form a full or partial ester, and crosslinking the full or partial ester by means of a crosslinking agent, wherein the crosslinking can take place during or after the formation of the full or partial ester, wherein the crosslinking agent is a compound having at least two functional groups which are capable of reacting with the free OH groups of the partial ester or capable of reacting with functional groups of the acid component used for the production of esters to form a covalent bond.