Patent ID: 6838133

Claim:
An ink jet printing paper sheet comprising cellulose fibers coated at least in part upon paper making with solids of a substantially organic solvent-free, silicone resin-containing emulsion composition which is obtained by emulsion polymerization of a mixture comprising: (a) 100 parts by weight of at least one of (a-1) a singly water insoluble, silanol group-bearing silicone resin having the following average compositional formula: R 1 m R 2 n Si(OH) p (OX) q O (4-m-n-p-q)/2 wherein R 1 is a monovalent hydrocarbon group having 1 to 10 carbon atoms, R 2 is a substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, X is a monovalent hydrocarbon group having 1 to 6 carbon atoms, m, n, p and q are positive numbers satisfying 0.5≦m≦1.8, 0≦n≦1.0, 0<p≦1.5, 0q≦0.5, 0.5≦m+n≦1.8, 0<p+q≦1.5, and 0.5<m+n+p+q<3, and (a-2) a radical polymerizable vinyl group-bearing alkoxysilane having the following general formula: CH 2 ═CR 3 R 4 b SiR 5 a (OX) 3-a wherein R 3 is hydrogen or methyl, R 4 is a divalent hydrocarbon group of 1 to 10 carbon atoms which may be separated by an oxygen atom, —COO— group or the like, R 5 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, X is as defined above, “a” is 0 or 1, and “b” is 0 or 1, and (b) 100 to 100,000 parts by weight of a radical polymerizable vinyl monomer.