Storage-stable two-component polyurethane or polyisocyanurate spray foam compositions are disclosed, said compositions comprising: (a) an A-side component comprising one or more polyisocyanate and one or more blowing agent; and (b) a B-side component comprising one or more polyol and one or more blowing agent comprising pressurized gaseous carbon dioxide and one or more liquid blowing agent; wherein both the A-side component and the B-side component, separately, generate less than 300 ppm of fluoride ion after one week of aging at 50° C.

Polymer foams based on polyetherimides (PEI) meet the legal requirements of the aerospace industry for both the interior and exterior of aircraft.

A foam sheet contains an aliphatic polyester resin, a nucleating agent for foaming, and hydrofluoroolefin, wherein the nucleating agent accounts for 0.05 to 2 percent by mass of the foam sheet.

A polylactic acid resin composition is provided that contains a polylactic acid resin and inorganic particles. The polylactic acid resin composition has a weight average molecular weight of 250,000 to 600,000, and the inorganic particles have a hydrophobicity of 65% by volume or higher and a carbon content of 4% by mass or more.

Embodiments relate to a porous polyurethane polishing pad for use in a chemical mechanical planarization (CMP) process of semiconductors and a process for preparing the same. According to the embodiments, the size and distribution of the plurality of pores contained in the porous polyurethane polishing pad can be adjusted. Thus, it is possible to provide a porous polyurethane polishing pad that has enhanced physical properties such as a proper level of withstand voltage, excellent polishing performance (i.e., polishing rate), and the like.

The present invention relates to a non-crosslinked block copolymer foam composition, characterised in that it is in the form of a polymer matrix comprising closed cells containing gas, said matrix comprising: from 90 to 99.9% by weight of said block copolymer; and from 0.01 to 10% by weight of metal carbonate, for the total weight of the foam composition. The present invention also relates to a foamable composition and a method for manufacturing said foam, as well as the use of the foam in sports shoe soles, balloons or balls, gloves, personal protection equipment, rail soles, automobile parts, construction parts, electrical and electronic equipment parts, audio equipment, sound- and/or heat-proofing, and parts used to damp vibrations.

Reversibly cross-linkable foam is provided. The reversibly cross-linked foam includes a first polymeric material, at least one reversibly cross-linkable monomer polymerized with the first polymeric material, and at least one blowing agent. The reversibly cross-linkable co-polymeric foam is thermally stable at temperatures of at least 10 degrees higher than otherwise identical polymeric foam that does not include the reversibly cross-linkable agent polymerized with the first polymeric material.

An improved process for fabricating expanded thermoplastic polymers (eTP) starting from non-expanded TP is disclosed whereby said process has improved thermal control, uses preferably environmentally friendly foaming gasses, avoids anisotropy and sticking of the eTP during the processing and minimises the duration of the charging step.

A molded foam that can be easily taken out of split mold blocks is provided. According to an aspect of the present disclosure, a molded foam (1) is obtained by clamping, with split mold blocks, foamed resin obtained by melting and kneading a polyethylene-based resin, wherein the molded foam (1) has a MFR (190° C., g/10 min) of less than 0.8, or the polyethylene-based resin has a MFR (190° C., g/10 min) of not more than 1.0.

Methods of making a foamed article include: (a) milling a block or sheet of thermoplastic polymer to form a precursor; (b) crosslinking the thermoplastic polymer; (c) heating the precursor to a first temperature to soften the thermoplastic polymer; (d) infusing the thermoplastic polymer with at least one inert gas at a first pressure that is sufficient to cause the at least one inert gas to permeate into the softened thermoplastic polymer; and (e) while the thermoplastic polymer is softened, reducing the pressure to a second pressure below the first pressure to at least partially foam the precursor into a foamed article, wherein the foamed article is substantially the same shape as the precursor.