An in-situ foaming system for forming a flame-retardant polyurethane foam in situ comprising a first liquid containing a polyisocyanate (A), a second liquid containing a polyol (B), a trimerization catalyst (C), a foaming agent (D), a foam stabilizer (E), and additives (F) comprising red phosphorus and at least one member selected from the group consisting of phosphoric acid esters, phosphate-containing flame retardants, bromine-containing flame retardants, boron-containing flame retardants, antimony-containing flame retardants, and metal hydroxides.

Thermoplastic molding compositions comprising A) from 10 to 99.8% by weight of a thermoplastic polyamide, B) from 0.1 to 60% by weight of red phosphorus, C) from 0.01 to 4% by weight of a Cu(I) salt or Ag(I) oxide or Cu(I) complex or Ag(I) salt or Cu(I) oxide or Ag(I) complex, or a mixture of these, D) from 0 to 40% by weight of an impact modifier, and E) from 0 to 60% by weight of further additional substances, where the total of the percentages by weight of A) to E) is 100%.

A composition for producing rigid PU foam contains at least one polyisocyanate component, at least one polyol component, a blowing agent, a solid flame retardant, and optionally, a catalyst that catalyzes the formation of a urethane or isocyanurate linkage. The composition also contains at least one surfactant based on a quaternary ammonium compound.

An in-situ foaming system for forming a flame-retardant polyurethane foam in situ comprising a first liquid containing a polyisocyanate (A), a second liquid containing a polyol (B), a trimerization catalyst (C), a foaming agent (D), a foam stabilizer (E), and additives (F) comprising red phosphorus and at least one member selected from the group consisting of phosphoric acid esters, phosphate-containing flame retardants, bromine-containing flame retardants, boron-containing flame retardants, antimony-containing flame retardants, and metal hydroxides.

A polymer composition having antimicrobial properties, the composition comprising from 50 wt % to 99.99 wt % of a polymer, from 10 wppm to 900 wppm of zinc, less than 1000 wppm of phosphorus, and less than 10 wppm coupling agent and/or surfactant, wherein zinc is dispersed within the polymer; and wherein fibers formed from the polymer composition demonstrate a Klebsiella pneumonia log reduction greater than 0.90, as determined via ISO20743:2013 and/or an Escherichia coli log reduction greater than 1.5, as determined via ASTM E3160 (2018).

The present invention provides a refractory article which is fire resistant, heat resistant, and light weight, and which is suitable for use as a building material. The refractory article comprises (1) a core material and (2) a refractory layer which covers one or more surface of the core material, and comprises a polyisocyanurate resin. The core material (1) may be a glued laminated timber. Suitable polyisocyanurate resins may be obtained by reaction of a polyisocyanate in the presence of a polyol. A flame retardant may be present in the polyisocyanurate resin.

The invention relates to thermoplastic molding compositions comprising A) 10 to 98 wt % of a thermoplastic polyamide other than B), B) 1 to 50 wt % of a thermoplastic polyamide comprising units derived from 2-pyrrolidone, C) 0 to 40 wt % of a halogen-free flame retardant, D) 0 to 60 wt % of a fibrous or particulate filler or mixtures thereof, E) 0 to 30 wt % of further added substances,
wherein the weight percentages A) to E) sum to 100%.

A chemical mechanical polishing (abbreviated as CMP) conditioner comprises a bottom substrate, an intermediate substrate and a diamond film The intermediate substrate is provided on the bottom substrate. The intermediate substrate comprises a hollow portion, an annular portion surrounding the hollow portion, and at least one projecting ring projecting out of the annular portion away from the bottom substrate. The projecting ring comprises a plurality of bumps arranged to be spaced apart from each other along an annulus region. The bumps are extended in a radial direction of the intermediate substrate. The diamond film is provided on the intermediate substrate. The diamond film is allowed for conforming to the bumps, so as to form a plurality of the abrasive projections.

A resin film that is made of a resin composition containing: a resin component; and a covalent organic framework in which a plurality of linker portions and a plurality of multi-site core portions are connected through covalent bonds. In a preferred configuration, the resin component is a thermoplastic resin, the resin composition has a water absorption rate of 0.1 mass % or less, the resin composition has a melting point of higher than 300? C., the resin composition has a relative permittivity of less than 3.0, and the resin composition has a dielectric loss tangent of less than 0.002.

Fire retardant compositions including a base polymer, a fire retardant filler, and a fire retardant synergist are disclosed. The fire retardant compositions are halogen-free and heavy metal-free and can be crosslinked to form a cable insulation layer or a cable jacket. The cables can pass the UL VW-1 flame test. Cables having coverings formed from such fire retardant compositions are also described herein.