Patent ID: 8592505

Claim:
An adduct formed from a) an alkylphosphonous acid derivative of formula (I) A-P(═O)(OX)—H (I) wherein A is an ethyl, n-propyl, i-propyl, n-butyl, i-butyl, n-pentyl, i-pentyl, n-hexyl, i-hexyl, 2-phenylethyl, 1-phenylethyl, 3-phenylpropyl, 2- phenylpropyl, 2-hydroxyethyl, 3-hydroxypropyl, 2-carboxyethyl, 3-carboxypropyl, 2-acetatoethyl, 3-acetatopropyl, 2-butyratoethyl, 3-butyratopropyl, 2-ethyloxyethyl, 3-ethyloxypropyl, 2-propyloxyethyl, 3-propyloxypropyl, 2-butyloxyethyl, 3-butyloxypropyl, 3-carboxypropyl, 2-aminoethyl, 3-aminopropyl group or a combination thereof, and X is H, C 1 -C 18 -alkyl, C 6 -C 18 -aryl, C 6 -C 18 -arylalkyl, C 6 -C 18 -alkylaryl, C 2 -C 18 -alkylene, Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Cu, Ni Li, Na, K, H a protonated nitrogen base or a combination thereof, wherein the C 1 -C 18 -alkyl, C 6 -C 18 -aryl, C 6 -C 18 arylalkyl, C 6 -C 18 -alkylaryl or C 2 -C 18 -alkylene is optionally substituted, and b) a diester-forming olefin of formula (II) wherein R 2 , R 4 are the same or different and are CO 2 H, CO 2 R 5 , R 6 —CO 2 H or R 6 —CO 2 R 5 and R 1 , R 3 are the same or different and are H or R 5 ; or R 1 , R 4 are the same or different and are CO 2 H, CO 2 R 5 , R 6 —CO 2 H or R 6 —CO 2 R 5 and R 2 , R 3 are the same or different and are H or R 5 ; or R 2 , R 4 are the same or different and are —CO—O—CO—, —CO—S—CO—, —CO—NR 1 —CO—, or —CO—PR 1 —CO— and R 1 , R 3 are the same or different and are H or R 5 ; or R 1 , R 2 are the same or different and are CO 2 H, CN, CO 2 R 5 , R 6 —CO 2 H or R 6 —CO 2 R 5 and R 3 , R 4 are the same or different and are H or R 5 ; or R 1 , R 2 are the same or different and are —CR 2 3 —CO—O—CO—, —CR 2 3 —CO—NR 1 —CO—, —CR 2 3 —CO—O—CO—CR 2 3 or —CR 2 3 —CO—NR 1 —CO—CR 2 3 and R 3 , R 4 are the same or different and are H or R 5 ; or R 2 and R 4 each represent —CO—CR 5 ═CR 5 —CO— and R 1 , R 3 are the same or different and are H are R 5 ; R 5 is C 1 -C 18 -alkyl, C 6 -C 18 -aryl, C 6 -C 18 -arylalkyl or C 6 -C 18 -alkylaryl; R 6 is C 2 -C 18 -alkylene, C 6 -C 18 -arylene, C 6 -C 18 -alkarylene, C 6 -C 18 -aralkylene or a combination thereof.