Disclosed herein are lignin-furfuryl alcohol compositions, lignin-furfuryl alcohol-resole (LFR) compositions comprising lignin-furfuryl alcohol composition and phenolic resoles and LFR foams derived from such LFR compositions. Disclosed herein are LFR foams comprising a polymeric phase defining a plurality of open cells and a plurality of closed cells, and a gas phase comprising one or more blowing agents disposed in at least a portion of the plurality of closed cells, wherein the polymeric phase is derived from LFR compositions.

A composition and process useful to make flexible polyurethane foams and in particular flexible molded polyurethane foams is disclosed. The usage of dipolar aprotic liquids such as DMSO, DMI, sulfolane, N-methyl-acetoacetamide, N,N-dimethylacetoacetamide as well as glycols containing hydroxyl numbers OH#1100 as cell opening aides for 2-cyanoacetamide or other similar molecules containing active methylene or methine groups to make a polyurethane foam is also disclosed. The advantage of using cell opener aids results in a) no foam shrinkage; b) lower use levels of cell opener; c) foam performance reproducibility d) optimum physical properties. In addition, combining the acid blocked amine catalyst together with the cell opener and the cell opener aid results in a less corrosive mixture as well as provides a method that does not require mechanical crushing for cell opening.

The present relates to flame-retardant expandable polymers and to polymer foams and to the use thereof. These flame-retardant expandable polymers and polymer foams can be contained in one or several pressurized containers. According to the present, at least one of the following phosphorus compounds is used as a flame retardant: phosphorus compound according to formula (Ia): (Ia) 10-hydroxy-9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO-OH); or the salts thereof according to formula (Ib): (Ib) (DOPO-OR); or the ring-opened hydrolysates thereof according to formula (Ic): (Ic).

A process for manufacturing a thermoset polyester foam includes the following successive steps: (a) providing an expandable and thermosetting composition containing a polyol component including at least one element selected from glycerol, diglycerol and glycerol oligomers; a polyacid component including citric acid; a surfactant selected from alkyl polyglycosides and mixtures of an anionic surfactant and a cationic surfactant, and an esterification catalyst; (b) introducing the expandable and thermosetting composition into a mold or applying the expandable composition to a support; and (c) heating the expandable and thermosetting composition at a temperature at least equal to 135 C. so as to react the polyol component with the polyacid component and form a block of thermoset polyester foam.

A fire resistant syntactic foam material, the material comprising the reaction product of a reaction mixture including a resole cold curing phenolic resin and incorporating a plurality of hollow spheres, the reaction mixture also including a solution of a partial phosphate ester, a low viscosity phosphate plasticiser, a reinforcing filler and a particulate filler.

A system for producing an in-situ foam, which comprises the components from 50 to 98% by weight of one or more inorganic fillers A), from 1 to 48% by weight of one or more water-soluble, cationic polymers B), from 0.5 to 48% by weight of one or more surfactants C), from 0.01 to 5% by weight of one or more crosslinkers D) which are capable of reacting with the polymers B), from 0 to 20% by weight of one or more additives E),
where the percentages by weight of the components A) to E) are based on the nonaqueous fraction and the sum of A) to E) is 100% by weight, process for producing an in-situ foam using the components of the system and foaming by means of a gas or a gas mixture and use for thermal insulation and filling of hollow spaces and hollow bodies.

Described are a method of producing polyurethane foam comprising polyolefin-based polyols by using an additive composition comprising at least one ionic surfactant A selected from ionic surfactants of formula A.sup.M.sup.+, where A.sup.=anion selected from the group consisting of alkyl sulphates, aryl sulphates, sulphonates, polyether sulphates, polyether sulphonates, alkyl sulphonates, aryl sulphonates, alkyl carboxylates, aryl carboxylates, saccharinates and polyether phosphates, and M.sup.+=cation, and/or at least one ionic surfactant B selected from a quaternized ammonium compound, and also at least a tertiary amine compound C having a molar mass of at least 150 g/mol, and/or an oxazasilinane D, and also polyurethane foams thus obtained and their use.

A melamine-formaldehyde foam manufactured by including a melamine-formaldehyde condensate that has a weight average molecular weight (Mw) in a range of 1000 to 10,000 g/mol, a solid content in a range of 60 to 80 percent by weight (wt %), and a viscosity in a range of 1000 to 10,000, and a method of manufacturing the melamine-formaldehyde foam. The melamine-formaldehyde foam can have a uniform cell structure, while exhibiting excellent mechanical properties such as tensile strength and elongation.

A propylene-based polymer composition is characterized by a melt strength at 190 C. of at least 20 cN, a melt drawability at 190 C. of at least 100 mm/s, and a flexural modulus at room temperature of at least 240,000 psi. The propylene-based polymer composition includes a propylene-based polymer resin having a crystallinity of at least 50% coupled with a poly(sulfonyl azide).

A thermally expandable composition, including: (a) at least one polymer P, cross-linkable by a free-radical initiator; (b) at least one acrylate A; (c) at least one free-radical initiator; (d) at least one blowing agent; and (e) at least one surfactant, whereby the surfactant is a sulfonate salt. The thermally expandable composition is able to provide sufficient expansion behaviour when used in the form of a thin layer and is especially suitable for baffle and/or reinforcement elements.