摘要:
A membrane includes a composite material of a silicone polymer and 0.1 wt % to 15 wt % of a scavenging filler. The membrane has a thickness of at least 1 mm and exhibits a tensile retention index of at least 35%.
摘要:
Process for modifying a polyolefin grafted with acid or anhydride groups, by at least partial neutralization of these groups with at least one neutralizing agent comprising an organic salt (1) that releases an organic acid (I) during the neutralization, according to which the organic acid (I) derived from the neutralization of the grafted polyolefin is reacted with at least one inorganic salt (2).Modified polyolefin (that can be) obtained by the process described above.Polymeric composition containing (A) at least one polymer, and (B) at least one modified polyolefin (that can be) obtained by the process above.Article comprising the modified polyolefin or the composition described above.
摘要:
A method for modifying or synthesizing a polymeric material where a chemical compound and supercritical carbon dioxide are introduced into an extruder, and extruding the raw material or polymeric material under conditions permitting reaction with the chemical compound.
摘要:
Compositions based on ε-caprolactone polymer, comprising at least one ε-caprolactone polymer and calcium carbonate. Process for preparing these compositions, which are used for manufacturing articles, in particular films, preferably obtained by extrusion blow-moulding or by flat-die extrusion.
摘要:
The invention concerns thermoplastic aliphatic polyester compositions characterized by a melt flow index (RMFI) ranging between 1.1 and 2.5. The invention also concerns a method for preparing said compositions which are used for making films, foams, flasks or thermoformed products. The resulting films obtained from said compositions are used for making litter bags, films for agricultural use, packaging films, shrouds, diaper drawers and adhesive films.
摘要:
A method of forming a seal includes preparing a froth from a one component polyurethane precursor, applying the froth to a surface of an article, and simultaneously applying water with the froth, the froth curing to form a gasket having a density not greater than 350 kg/m3 bonded to the article.
摘要:
A framed device includes a substrate, a frame, and a seal. The substrate has a first length, a first width, and a peripheral edge. The frame has a single, contiguous lengthwise piece having a first end and a second end, wherein the lengthwise piece is configured to form three corners by bending and is substantially equal to the length of the substrate. The frame further includes an attachment means connecting the first end and second end of the frame when in the bent position and a groove that runs along a length and a width of the frame, wherein the groove is substantially engaged with the peripheral edge of the substrate. The seal is disposed within the groove of the frame, wherein the seal runs contiguously from the substrate to the frame and the seal includes a foamed polymer.
摘要:
The disclosure is directed to a framed device. The framed device includes a substrate, a frame, and a seal. The substrate has a first length, a first width, and a peripheral edge. The frame has a single, contiguous lengthwise piece having a first end and a second end, wherein the lengthwise piece is configured to form three corners by bending and is substantially equal to the length of the substrate. The frame further includes an attachment means connecting the first end and second end of the frame when in the bent position and a groove that runs along a length and a width of the frame, wherein the groove is substantially engaged with the peripheral edge of the substrate. The seal is disposed within the groove of the frame, wherein the seal runs contiguously from the substrate to the frame and the seal includes a foamed polymer.
摘要:
Polymer composition comprising more than 50 % by weight, with respect to the total weight of the composition, of a nonfunctionalized polyolefin (PO1), and more than 0.5 % by weight, with respect to the total weight of the composition, of at least one polyolefin comprising carboxyl grafts [polyolefin (POg)] which is functionalized by grafting using at least one grafting agent chosen from ethylenically unsaturated carboxylic acids, their anhydrides and their metal salts, at least a portion of the carboxyl grafts of which is neutralized by a metal, optionally by the neutralization, concomitant with and/or subsequent to the grafting, of the carboxyl grafts by at least one metal base, and which has been synthesized from a nonfunctionalized polyolefin (PO2), at least 0.5 % by weight and at most 50 % by weight of the repeat units of which are derived from at least one ethylenically unsaturated monomer which has a different chemical nature from that of the repeat units of the nonfunctionalized polyolefin (PO). Article comprising the composition described above.
摘要:
Process for modifying a polyolefin grafted with acid or anhydride groups, by at least partial neutralization of these groups with at least one neutralizing agent comprising an organic salt (1) that releases an organic acid (I) during the neutralization, according to which the organic acid (I) derived from the neutralization of the grafted polyolefin is reacted with at least one inorganic salt (2). Modified polyolefin (that can be) obtained by the process described above. Polymeric composition containing (A) at least one polymer, and (B) at least one modified polyolefin (that can be) obtained by the process above. Article comprising the modified polyolefin or the composition described above.