A water/oil repellent composition which can provide an article with high and durable water repellency is provided. A water/oil repellent composition comprising units based on a fluoroolefin represented by the formula (1): CH.sub.2═CH—R.sup.f (wherein R.sup.f is a C.sub.1-8 perfluoroalkyl group), units based on a vinyl carboxylate having a C.sub.12 or higher alkyl group, and units based on a haloolefin other than the fluoroolefin or a derivative thereof, wherein the ratio of units based on the fluoroolefin is from 15 to 35 mol %, the ratio of units based on the vinyl carboxylate is from 30 to 60 mol %, and the ratio of units based on the haloolefin or derivative thereof is from 5 to 55 mol %, relative to all the units constituting the fluorinated polymer:

A water/oil repellent composition which can provide an article with high and durable water repellency is provided. A water/oil repellent composition comprising units based on a fluoroolefin represented by the formula (1): CH.sub.2═CH—R.sup.f (wherein R.sup.f is a C.sub.1-8 perfluoroalkyl group), units based on a vinyl carboxylate having a C.sub.12 or higher alkyl group, and units based on a haloolefin other than the fluoroolefin or a derivative thereof, wherein the ratio of units based on the fluoroolefin is from 15 to 35 mol %, the ratio of units based on the vinyl carboxylate is from 30 to 60 mol %, and the ratio of units based on the haloolefin or derivative thereof is from 5 to 55 mol %, relative to all the units constituting the fluorinated polymer:

A hydrophobic, water-redispersible polymer powder composition contains a) a main polymer having a1) more than 60 parts by weight of vinyl laurate monomer units a2) 5 to 30 parts by weight of vinyl acetate monomer units, a3) 5 to 30 parts by weight of ethylene monomer units, a4) 0 to 10 parts by weight of other ancillary monomer units,
where the parts by weight total 100 parts by weight, b) 0.5 to 30% by weight of one or more protective colloids, c) 0 to 30% by weight of antiblocking agent, d) 0 to 20% by weight of organosilicon compound, and e) 0 to 20% by weight of fatty acid or derivatives of the fatty acids,
where the % s by weight are based on the total weight of the polymer a).

A hydrophobic, water-redispersible polymer powder composition contains a) a main polymer having a1) more than 60 parts by weight of vinyl laurate monomer units a2) 5 to 30 parts by weight of vinyl acetate monomer units, a3) 5 to 30 parts by weight of ethylene monomer units, a4) 0 to 10 parts by weight of other ancillary monomer units,
where the parts by weight total 100 parts by weight, b) 0.5 to 30% by weight of one or more protective colloids, c) 0 to 30% by weight of antiblocking agent, d) 0 to 20% by weight of organosilicon compound, and e) 0 to 20% by weight of fatty acid or derivatives of the fatty acids,
where the % s by weight are based on the total weight of the polymer a).

Provided is a water repellent oil repellent agent composition capable of producing an article having excellent oil repellency. A water repellent oil repellent agent composition containing a fluorine-containing polymer comprising a unit based on a monomer (a) shown below and a unit based on a monomer (b) shown below.

Monomer (a): a compound represented by CH.sub.2═CH—[CH.sub.2CH.sub.2].sub.p—[CF.sub.2CF.sub.2].sub.q—[OCF.sub.2CF(CF.sub.3)].sub.r—O—C.sub.3F.sub.7
In the formula, p represents an integer of 0 to 4, q represents an integer of 1 to 4, and r represents an integer of 1 to 4.
Monomer (b): another monomer that is copolymerizable with the monomer (a).

Provided is a water repellent oil repellent agent composition capable of producing an article having excellent oil repellency. A water repellent oil repellent agent composition containing a fluorine-containing polymer comprising a unit based on a monomer (a) shown below and a unit based on a monomer (b) shown below.

Monomer (a): a compound represented by CH.sub.2═CH—[CH.sub.2CH.sub.2].sub.p—[CF.sub.2CF.sub.2].sub.q—[OCF.sub.2CF(CF.sub.3)].sub.r—O—C.sub.3F.sub.7
In the formula, p represents an integer of 0 to 4, q represents an integer of 1 to 4, and r represents an integer of 1 to 4.
Monomer (b): another monomer that is copolymerizable with the monomer (a).

A polymer composition may include a polymer produced from ethylene, one or more branched vinyl ester monomers, and optionally, vinyl acetate; wherein the polymer has a number average molecular weight ranging from 5 to 10,000 kDa, and a molecular weight distribution ranging from 1 to 60, obtained by GPC.

A polymer composition may include a polymer produced from ethylene, one or more branched vinyl ester monomers, and optionally, vinyl acetate; wherein the polymer has a number average molecular weight ranging from 5 to 10,000 kDa, and a molecular weight distribution ranging from 1 to 60, obtained by GPC.

Some embodiments of the present disclosure relate to a method comprising obtaining a mixture comprising at least one vinyl polymer, at least one organic acid, and at least one hydronium ion donor. In some embodiments, the method comprises reacting an —OH group of the B polymer chain segment with the at least one organic acid in the presence of the at least one hydronium ion donor, so as to form at least one polyvinyl ester. Some embodiments of the present disclosure relate to a roofing material comprising at least one reinforcement material and at least one polyvinyl ester.

Some embodiments of the present disclosure relate to a method comprising obtaining a mixture comprising at least one vinyl polymer, at least one organic acid, and at least one hydronium ion donor. In some embodiments, the method comprises reacting an —OH group of the B polymer chain segment with the at least one organic acid in the presence of the at least one hydronium ion donor, so as to form at least one polyvinyl ester. Some embodiments of the present disclosure relate to a roofing material comprising at least one reinforcement material and at least one polyvinyl ester.