Patent ID: 7022640

Claim:
A diether having the general formula: where A, B, C and D are carbon atoms or heteroatoms selected from the group consisting of N, O, S and Si; v, x and y are 0 or 1; u and z are 0 or 1 or 2; provided that when u=0: i) A, B and C are carbon atoms and v, x and y are equal to 1; or ii) A is a nitrogen atom, B and C are carbon atoms, v is equal to 0 and x and y are equal to 1; or iii) A and B are nitrogen atoms, C is a carbon atom, v and x are equal to 0 and y is equal to 1; or iv) A and B are carbon atoms, C is a nitrogen atom, v and x are equal to 1 and y is equal to 0; when u=1: 1) A, B, C and D are carbon atoms, v, x and y are equal to 1 and z is equal to 2; or 2) A and B are carbon atoms, C is a nitrogen atom, D is an oxygen atom, v and x are equal to 1, y and z are equal to 0; or 3) A, B and C are carbon atoms, D is an oxygen, nitrogen, sulfur, or silicon atom, v, x and y are equal to 1 and z is equal to 0 when D is an oxygen or sulfur atom, equal to 1 when D is a nitrogen atom, and equal to 2 when D is a silicon atom; when u=2: A, B and C are carbon atoms, D represents two carbon atoms bonded to each other by a single or double bond, v, x and y are equal to 1 and z is equal to 1 when the couple of carbon atoms D is bonded by a double bond, and equal to 2 when said couple is bonded by a single bond; radicals R and R I , equal or different, are selected from the group consisting of hydrogen; halogens; C 1 –C 20 alkyl radicals, linear or branched; C 3 –C 20 cycloalkyl, C 6 –C 20 aryl, C 7 –C 20 alkaryl and C 7 –C 20 aralkyl radicals; the R II radicals, equal or different, are selected from the group consisting of C 1 –C 20 radicals, linear or branched; C 3 –C 20 cycloalkyl, C 6 –C 20 aryl, C 7 –C 20 alkaryl and C 7 –C 20 aralkyl radicals, and two or more of the R radicals can be bonded to each other to form condensed cyclic structures, saturated or unsaturated, optionally substituted with R III radicals selected from the group consisting of halogens; C 1 –C 20 alkyl radicals, linear or branched; C 3 –C 20 cycloalkyl, C 6 –C 20 aryl, C 7 –C 20 alkaryl and C 7 –C 20 aralkyl radicals; said radicals from R to R III optionally containing one or more heteroatoms as substitutes for carbon or hydrogen atoms, or both.