A process of foaming a polyolefin, e.g., polyethylene, composition using as a nucleator a combination of (A) azodicarbonamide, and (B) a mixture of (1) a first component consisting of at least one of citric acid and an alkali metal citrate, and (2) a second component consisting of at least one of an alkali metal citrate, a di-alkali metal hydrogen citrate, an alkali metal dihydrogen citrate and an alkali metal bicarbonate, with the proviso that the mixture is not solely composed of alkali metal citrate.

The disclosure generally relates to improving affinity interactions by the formation of an interconnected affinity agent network within a porous substrate via the use of metal complexes. More particularly, the disclosure generally relates to a binding support comprising a porous substrate as a component of a lateral flow assay device comprising at least one affinity agent associated with at least one metal coordination complex which forms an at least partially interconnected network with the porous substrate.

The present disclosure provides a process of preparing linear polypropylene foam, comprising the following steps: (a) preparing a specimen comprising at least one linear polypropylene; and at least one nucleating agent selected from the group consisting of alpha nucleating agents and beta nucleating agents; (b) deforming the specimen under a deforming pressure and at a deforming temperature for a period of time; and (c) subjecting the deformed specimen obtained in the step (b) to a foaming process to obtain the linear polypropylene foam. The present disclosure further provides a specimen after PIF treatment and a linear polypropylene foam prepared by the above process.

The invention relates to a method for producing a dispersion of nanoscale dicarboxylic acid salts, to the use of these dispersions for producing a compound, and to the use for producing films. The invention further relates to the use of the compounds for producing films.

The present invention relates to a process for preparing a porous material, at least providing a mixture (I) comprising a composition (A) comprising components suitable to form an organic gel and a solvent (B), reacting the components in the composition (A) in the presence of the solvent (B) to form a gel, and drying of the gel obtained in step b), wherein the composition (A) comprises a catalyst system (CS) comprising a catalyst component (C1) selected from the group consisting of alkali metal and earth alkali metal, ammonium, ionic liquid salts of a saturated or unsaturated monocarboxylic acid and a carboxylic acid as catalyst component (C2). The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material and in vacuum insulation panels, in particular in interior or exterior thermal insulation systems as well as in water tank or ice maker insulation systems.

The present disclosure provides a linear polypropylene foam with, for example, low density and/or high expansion ratio, said linear polypropylene foam comprising at least one polypropylene, at least one alpha nucleating agent, and at least one beta nucleating agent. The present disclosure also provides compositions and processes for making said linear polypropylene foam.

A composition and method for preparing a polyurethane foam. The composition comprises at least one emission control agent. In embodiments, the composition comprises at least one emission control agent selected from the group consisting of (i) a phosphorous containing group; (ii) a thiocarbamate; (iii) a nitrogen containing compound; (iv) a phenolic antioxidant; or a combination of two or more thereof. The invention also relates to a method of controlling the emission of at least one aldehyde species in a raw material employed in the foam composition or that may be produced during the foam forming or foam curing or foam aging process.

This present invention discloses a halogen-free flame retardant polyolefin foam composite, which is comprises: 80-125 parts by weight of ethylene/vinyl acetate copolymer (EVA), 8-13 parts by weight of high density polyethylene (HDPE) or low density polyethylene (LDPE), 15-25 parts by weight of polyolefin elastomer (POE), 60-77 parts by weight of acid source material, 17-22 parts by weight of carbon source material, 8-11 parts by weight of gas source material, 1-8 parts by weight of retardant synergist, 5.5-8 parts by weight of composite foaming agent, 0.7-1.0 parts by weight of crosslinking agent, 4.0-5.5 parts by weight of plasticizer, 0.5-1.6 parts by weight of surface treatment agent, 20-35 parts by weight of compatibility, 6-14 parts by weight of inorganic filler, and 1.6-4.6 parts by weight of additive. This halogen-free flame retardant polyolefin foam composite has the advantages of good softness, flexibility, impact resistance, low density, low compressibility and deformability, good shock absorbability, and so on.

The present invention provides a kind of inherent flame retardant rigid polyurethane foam. The production formula comprises 100 to 105 pbw of polyether polyol and reactive phosphorus-containing flame retardant, 2.5 to 3.5 pbw of amine catalyst, 0.8 to 2.5 pbw of tertiary amine catalyst, 0.8 to 2.5 pbw of foam stabilizer, 0.5 to 1.5 pbw of blowing agent, 135 to 150 pbw of isocyanates, and 0.05 to 0.1 pbw of organo-metallic catalyst, wherein the reactive phosphorus-containing flame retardant is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-4-hydroxybenzyl alcohol. The active monomers containing flame retarding elements are introduced into main chain and side chain of PU for modification, which permanently improves the flame retardancy of PU without obvious effect on other performance of PU matrix.

A new process is described for preparing silicone foam, ideal for the manufacture of articles in the field of construction, transport, electrical insulation or household appliances, particularly as padding material for seats in the field of transport. This method includes a step (a) of preparing a silicone composition capable of forming a foam by releasing a gas, a step (b) including introducing the silicone composition into a closed mold, and a step (c) including allowing the silicone composition to crosslink and/or harden to obtain the silicone foam, the walls of the mold being permeable to gas at least during all or part of the step of crosslinking and/or hardening of said silicone composition.