A reactive resin composition is described, with a resin component, which contains a radical-polymerizable compound, and an initiator system, which contains an α-halocarboxylic acid and a catalyst system, which comprises a nitrogen-containing ligand and Cu(0) or an inorganic Cu(I) compound, as is the use of the same for construction purposes.

A reactive resin composition is described, with a resin component, which contains a radical-polymerizable compound, and an initiator system, which contains an α-halocarboxylic acid and a catalyst system, which comprises a nitrogen-containing ligand and Cu(0) or an inorganic Cu(I) compound, as is the use of the same for construction purposes.

Provided is a honeycomb catalyst in which a plurality of through holes are provided in proximity to each other in a row arrangement in the lengthwise direction, and are set apart by partitions. A honeycomb unit contains at least two types of inorganic particles and an inorganic binder. The inorganic particles contain zeolite having an SiO2/Al2O3 composition ratio of less than 15 and a CHA structure and an oxide other than zeolite, which has a positive thermal expansion coefficient. The ratio (X:Y) of the volume (X) of zeolite and the volume (Y) of oxide is 50:50 to 80:20. A displacement amount of absorbed water is reduced and cracking is controlled while maintaining high NOx purging performance.

Provided is a honeycomb catalyst in which a plurality of through holes are provided in proximity to each other in a row arrangement in the lengthwise direction, and are set apart by partitions. A honeycomb unit contains at least two types of inorganic particles and an inorganic binder. The inorganic particles contain zeolite having an SiO2/Al2O3 composition ratio of less than 15 and a CHA structure and an oxide other than zeolite, which has a positive thermal expansion coefficient. The ratio (X:Y) of the volume (X) of zeolite and the volume (Y) of oxide is 50:50 to 80:20. A displacement amount of absorbed water is reduced and cracking is controlled while maintaining high NOx purging performance.

A waterproofed gypsum board and associated method are provided, featuring the use of a mixture of magnesium oxide and a gypsum crystal modifier for improving the resistance to sagging of the waterproofed gypsum board, in particular, in moist and warm climatic conditions.

A waterproofed gypsum board and associated method are provided, featuring the use of a mixture of magnesium oxide and a gypsum crystal modifier for improving the resistance to sagging of the waterproofed gypsum board, in particular, in moist and warm climatic conditions.

Cementitious compositions have an oxidatively degraded polysaccharide as a water reducing agent to provide similar water reducing properties to cementitious composition formulated with lignosulfonates. The oxidatively degraded polysaccharides have the advantage over lignosulfonates of a lower price and a more consistent quality and are expected to be compatible with polycarboxylatether cement additives. Further, methods for the preparation of corresponding cementitious compositions, appropriate oxidatively degraded polysaccharides and methods for producing the same, as well as the use of oxidatively degraded polysaccharides as water reducing agents in cementitious compositions.

Cementitious compositions and methods for the preparation of corresponding cementitious compositions, appropriate oxidatively degraded polysaccharides and methods for producing the same, as well as the use of oxidatively degraded polysaccharides as water reducing agents in cementitious compositions, wherein the compositions include an oxidatively degraded polysaccharide as a water reducing agent to provide similar water reducing properties to cementitious composition formulated with lignosulfonates. The oxidatively degraded polysaccharides have the advantage over lignosulfonates of a lower price and a more consistent quality and are expected to be compatible with polycarboxylatether cement additives.

Process for the production composite articles, comprising the steps of: a) providing a curable mixture comprising: 30-95 wt % of filler material, —5-70 wt % of resin, selected from unsaturated polyester resins, vinyl ester resins, (meth)acrylate resins, and combinations thereof, 0.5-10 phr of at least one peroxyester, 0.1-2.0 phr of at least one organic hydroperoxide, the weight ratio peroxyester/organic hydroperoxide being below 14.0, the curable mixture being essentially free of ketone peroxide, b) shaping the mixture, and c) heating the shaped mixture at a temperature in the range 60-100° C. to affect hardening of the resin and the formation of an article.

Process for the production composite articles, comprising the steps of: a) providing a curable mixture comprising: 30-95 wt % of filler material, —5-70 wt % of resin, selected from unsaturated polyester resins, vinyl ester resins, (meth)acrylate resins, and combinations thereof, 0.5-10 phr of at least one peroxyester, 0.1-2.0 phr of at least one organic hydroperoxide, the weight ratio peroxyester/organic hydroperoxide being below 14.0, the curable mixture being essentially free of ketone peroxide, b) shaping the mixture, and c) heating the shaped mixture at a temperature in the range 60-100° C. to affect hardening of the resin and the formation of an article.