Patent ID: 7129290

Claim:
A composition, comprising, (a) (i) a first polymer having one or more intact spiroorthocarbonate groups attached to a molecule of said first polymer each said intact spiroorthocabornate group having the general formula, wherein R 1 and R 2 are hydrocarbylene or substituted hydrocarbylene bridging groups having at least two bridging carbons and wherein R 1 and R 2 each independently have the formula, —CR 3 R 4 —CR 5 R 6 —(CR 7 R 8 ) n — wherein n is 0 or 1; and each of R 3 , R 4 , R 5 , R 6 , R 7 and R 8 independently is selected from the aroup consisting of hydrogen, hydrocarbyl and substituted hydrocarbyl, provided that any two of R 3 , R 4 , R 5 , R 6 , R 7 and R 8 vicinal or geminal to each other taken together may from a ring wherein the spiroorthocarbonate groups are hydrolyzed with water to generate hydroxyl groups; and (ii) a crosslinking agent containing first functional groups selected from the group consisting of isocyanates, epoxide, carboxylic acid anhydrides, melamine and silanes which react with hydroxyl groups, provided that said crosslinking agent has an average of at least 2 first functional groups per molecule of said crosslinking agent; and (iii) optionally one or more of: one or more solvents; one or more first catalysts for the reaction of said hydroxyl groups with said first functional groups; and one or more second catalysts for hydrolysis of said spiroorthocarbonate groups; or (b) (i) a second polymer having second functional groups which react with hydroxyl groups selected from the group consisting of isocyanates, epoxides, carboxylic acid anhydrides, melamine and silanes, provided that said second polymer has an average of at least 2 second functional groups per molecule of said second polymer; (ii) a compound containing at least one intact spiroorthocarbonate group each said intact spiroorthocarbonate group having the general formula, wherein R 1 and R 2 are hydrocarbylene or substituted hydrocarbylene bridging groups having at least two bridging carbons and wherein R 1 and R 2 each independently have the formula, —CR 3 R 4 —CR 5 R 6 —(CR 7 R 8 ) n — wherein n is 0 or 1; and each of R 3 , R 4 , R 5 , R 6 , R 7 and R 8 independently is selected from the group consisting of hydrogen, hydrocarbyl and substituted hydrocarbyl, provided that any two of R 3 , R 4 , R 5 , R 6 , R 7 and R 8 vicinal or geminal to each other taken together may form a ring; and (iii) optionally one or more of: one or more solvents; one or more first catalysts for the reaction of said hydroxyl groups with said second functional groups; and one or more second catalysts for hydrolysis of said spiroorthocarbonate groups.