An anti-foaming agent containing (A) an organopolysiloxane and a finely powdered inorganic filler, (B) a polyoxyalkylene group-containing branched chain organopolysiloxane, and (C) an anionic surfactant. This anti-foaming agent exhibits stable anti-foaming performance even at high temperatures that reach, for example, 80QC or under strongly alkaline conditions and produces no aggregates.

Provided is pulp for glass interleaving paper, and glass interleaving paper, can be produced while foaming is suppressed in a pulp production process and that reduces generation of aggregates composed of a silicone oil. A method of producing such glass interleaving paper is also provided. Also provided is glass interleaving paper wherein contamination of surfaces of glass substrates by aggregates mainly composed of a silicone oil can be reduced. Pulp for glass interleaving paper includes a hydrophilic modified silicone oil and a content ratio of the silicone oil to the pulp is from 0.5 to 2 mg/kg. Additionally, glass interleaving paper includes cellulose pulp as a main component and a hydrophilic modified silicone oil, a basis weight of the glass interleaving paper is from 10 to 100 g/m.sup.2, and a content ratio of the silicone oil to the glass interleaving paper is from 0.01 to 0.3 mg/kg.

Provided is pulp for glass interleaving paper, and glass interleaving paper, can be produced while foaming is suppressed in a pulp production process and that reduces generation of aggregates composed of a silicone oil. A method of producing such glass interleaving paper is also provided. Also provided is glass interleaving paper wherein contamination of surfaces of glass substrates by aggregates mainly composed of a silicone oil can be reduced. Pulp for glass interleaving paper includes a hydrophilic modified silicone oil and a content ratio of the silicone oil to the pulp is from 0.5 to 2 mg/kg. Additionally, glass interleaving paper includes cellulose pulp as a main component and a hydrophilic modified silicone oil, a basis weight of the glass interleaving paper is from 10 to 100 g/m.sup.2, and a content ratio of the silicone oil to the glass interleaving paper is from 0.01 to 0.3 mg/kg.

In a process for separating a solid material from a suspension of the solid material in water, an organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure is added to the suspension of solid material in water and the suspension is drained. The organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure increases the rate of drainage of the suspension.

In a process for separating a solid material from a suspension of the solid material in water, an organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure is added to the suspension of solid material in water and the suspension is drained. The organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure increases the rate of drainage of the suspension.

The present invention relates to a process for producing paper which comprises: (i) providing an aqueous suspension comprising cellulosic fibers, (ii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (iii) dewatering the obtained suspension to form paper.

The present invention relates to a process for producing paper which comprises: (i) providing an aqueous suspension comprising cellulosic fibers, (ii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (iii) dewatering the obtained suspension to form paper.

The present disclosure relates to food safe water resistant articles, which include recyclable cellulosic utensils having a food safe water resistant material. In addition, food safe water resistant composition used for preparing food safe water resistant articles as well as use of the same are also disclosed.