Patent ID: 6906076

Claim:
A compound having the formula: wherein A, independently, ═CH 3 , CH 2 CH 3 , COH, COCH 3 , COCH 2 CH 3 , CH 2 COCH 3 , CH 2 COCH 2 CH 3 , C(CH 3 ) 2 COCH 3 , or C(CH 3 ) 2 COCH 2 CH 3 ; P=1 or 2; L is a linker group containing an O atom; K=1; and wherein J represents (i) a saturated or unsaturated, substituted or unsubstituted, straight or branched acyclic hydrocarbon group; (ii) a saturated or unsaturated, substituted or unsubstituted, straight or branched acyclic group that contains one or more hetero atoms selected from the group consisting of nitrogen, sulfur and oxygen; (iii) a substituted or unsubstituted, saturated or aromatic, mono- or poly-cyclic group having 3 to 20 carbon atoms; or (iv) a substituted or unsubstituted, saturated or aromatic, mono- or poly-heterocyclic group having 3 to 20 atoms, at least one of which is nitrogen, sulfur or oxygen.