A POSS modified polyacrylate fluorine-free waterproofing agent includes following components: 1-10 wt % of a functionalized POSS monomer, 2-20 wt % of methyl methacrylate, 3-26 wt % of butyl acrylate, 1-10 wt % of a long-chain acrylate monomer, 0.5-3.5 wt % of an initiator, 0.5-4 wt % of a reactive cationic emulsifier, and 50-80 wt % of deionized water. A method of preparing a POSS modified polyacrylate fluorine-free waterproofing agent is also disclosed.

A porous film includes a porous base and a porous layer containing particles A disposed at least on one side thereof, wherein the particles A contain a mixture including a polymer formed from a fluorine-containing (meth)acrylate monomer and a polymer formed from a (meth)acrylate monomer having a hydroxyl group or a copolymer including a fluorine-containing (meth)acrylate monomer and a (meth)acrylate monomer having a hydroxyl group, with the (meth)acrylate monomer having a hydroxyl group accounting for more than 2 mass% and 30 mass% or less of all components of the particles A, which account for 100 mass%.

A porous film includes a porous base and a porous layer containing particles A disposed at least on one side thereof, wherein the particles A contain a mixture including a polymer formed from a fluorine-containing (meth)acrylate monomer and a polymer formed from a (meth)acrylate monomer having a hydroxyl group or a copolymer including a fluorine-containing (meth)acrylate monomer and a (meth)acrylate monomer having a hydroxyl group, with the (meth)acrylate monomer having a hydroxyl group accounting for more than 2 mass% and 30 mass% or less of all components of the particles A, which account for 100 mass%.

The time when at least a monomer and a chain transfer agent are supplied in a reactor and the solution temperature in the reactor has reached a predetermined polymerization temperature is set as starting time (T.sub.0), and the time when a process to terminate the polymerization is started is set as ending time (T.sub.1). A polymerization initiator is supplied into the reactor between (T.sub.0) and just before [(T.sub.1)−(T.sub.0)/2] and between [(T.sub.1)−(T.sub.0)/2] and (T.sub.1). The total mass of the polymerization initiator supplied to the reactor between (T.sub.0) and (T.sub.1) is set as (I.sub.A), and the total mass of the polymerization initiator supplied between [(T.sub.0−T.sub.1)/2] and (T.sub.1) is set as (I.sub.B). The (I.sub.A) is set 50 to 100 mass % of the entire polymerization initiator. Using a production method in which 0.50<(I.sub.B)/(I.sub.A)<1.00 is satisfied, a polymer is produced at a high polymerization rate showing less variation of molecular weight and having less amount of chain transfer agent residue remaining at an end of the polymer chain.

Radically polymerizable material, which contains (a) 0.01 to 5 wt.-% of at least one transfer reagent, (b) 5 to 60 wt.-% of at least one multifunctional (meth)acrylate or a mixture of mono- and multifunctional (meth)acrylates, (c) 0.01 to 3.0 wt.-% of a mixture of at least one monomolecular and at least one bimolecular photoinitiator, (d) 30 to 90 wt.-% of at least one filler, and (e) optionally additive(s), wherein the material contains as transfer reagent (a) at least one allyl sulfone of Formula I and/or a vinyl sulfone ester of Formula II.

Radically polymerizable material, which contains (a) 0.01 to 5 wt.-% of at least one transfer reagent, (b) 5 to 60 wt.-% of at least one multifunctional (meth)acrylate or a mixture of mono- and multifunctional (meth)acrylates, (c) 0.01 to 3.0 wt.-% of a mixture of at least one monomolecular and at least one bimolecular photoinitiator, (d) 30 to 90 wt.-% of at least one filler, and (e) optionally additive(s), wherein the material contains as transfer reagent (a) at least one allyl sulfone of Formula I and/or a vinyl sulfone ester of Formula II.

An iodine-containing (meth)acrylate compound represented by formula (1):

##STR00001##

wherein R.sup.1 represents a hydrogen atom, methyl, or halogen; each R.sup.2 independently represents a hydrogen atom, a linear organic group having 1 to 20 carbon atoms, a branched organic group having 3 to 20 carbon atoms, or a cyclic organic group having 3 to 20 carbon atoms; A represents an organic group having 1 to 30 carbon atoms; A contains at least one acyl group; n.sup.1 represents 0 or 1; and n.sup.2 represents an integer of 1 to 20.

An iodine-containing (meth)acrylate compound represented by formula (1):

##STR00001##

wherein R.sup.1 represents a hydrogen atom, methyl, or halogen; each R.sup.2 independently represents a hydrogen atom, a linear organic group having 1 to 20 carbon atoms, a branched organic group having 3 to 20 carbon atoms, or a cyclic organic group having 3 to 20 carbon atoms; A represents an organic group having 1 to 30 carbon atoms; A contains at least one acyl group; n.sup.1 represents 0 or 1; and n.sup.2 represents an integer of 1 to 20.

The invention relates to reflective particles containing a resin containing a structural unit derived from a compound represented by the following Formula (1), wherein in the formula (1), R represents a polymerizable group except a vinyl group, Ar represents an aromatic group, and W represents a single bond or a divalent linking group.
R—W—Ar  Formula (1)

The invention relates to reflective particles containing a resin containing a structural unit derived from a compound represented by the following Formula (1), wherein in the formula (1), R represents a polymerizable group except a vinyl group, Ar represents an aromatic group, and W represents a single bond or a divalent linking group.
R—W—Ar  Formula (1)