摘要:
A flame-retardant, reinforced polyolefin-crosslinked acrylic bonded composite and method of preparation thereof are provided. The method of preparing the composite includes coating the crosslinked acrylic surface with a solution of an .gamma.-aminopropyltrialkoxysilane to form a bond therewith. The coated acrylic layer is placed in a heated press with the flame-retardant, reinforced polyolefin layer, and a tie material disposed therebetween, thereby forming a composite. The composite is compressed to allow the amino functional group to bond with the maleated polyolefin. The polyolefin is thus bonded to the crosslinked acrylic surface.
摘要:
Specific thermoplastic compositions which are formulated to be exceptionally useful for adhesion to copper-containing metals are prepared from either glycidyl acrylate grafts of polypropylene based formulations with a minor elastomeric component or low density polyethylene based formulations grafted with acrylic acid and/or glycidyl acrylate and containing a minor elastomeric component.
摘要:
Improved fastener articles, comprising a plurality of preferably rod-shaped fastener elements, such as nails or staples, are maintained in a predetermined configuration by bonding them together with one or more of either strips, films, or powdered particles of a specially formulated, adherent polyolefin copolymer. These fastener articles are especially adapted for use in automatic dispensers, i.e. nailers or staplers.
摘要:
The cold flow properties of distillate petroleum fuel are improved by adding a polymer or copolymer containing at least 25 wt. % of an n-alkyl ester of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen or a C.sub.1 alkyl group, e.g., methyl, R.sub.4 is COOR.sub.3, hydrogen or a C.sub.1 to C.sub.4 alkyl group preferably COOR.sub.3 and R.sub.3 has an average number of carbon atoms from 12 to 20 and contains a methyl branch at the 1 and/or 2 position.
摘要:
A flame-retardant, reinforced polyolefin-crosslinked acrylic bonded composite and method of preparation thereof are provided. The method of preparing the composite includes coating the crosslinked acrylic surface with an aqueous solution of an .gamma.-aminopropyltrialkoxysilane to form a bond therewith. The coated acrylic layer is placed in a heated press with the flame-retardant, reinforced polyolefin layer, and a tie material disposed therebetween, thereby forming a composite. The composite is compressed to allow the amino functional group to bond with the maleated polyolefin. The polyolefin is thus bonded to the crosslinked acrylic surface.
摘要:
Compatibilized blends of polypropylene, linear low density polyethylene and a low molecular weight plastomer are disclosed. The blend preferably contains at least about 50 percent by weight of crystalline polypropylene, from about 10 to about 50 percent by weight of LLDPE dispersed in a matrix of the polypropylene, and a compatibilizing amount of an ethylene/alpha-olefin plastomer having a weight average molecular weight between about 5,000 to about 50,000, a density of less than about 0.90 g/cm.sup.3, and a melt index of at least about 50 dg/min. The blend is useful in the formation of melt spun and melt blown fibers. Also disclosed are spun bonded-melt blown-spun bonded fabrics made from the blends.
摘要翻译:公开了聚丙烯,线性低密度聚乙烯和低分子量塑性体的相容共混物。 共混物优选包含至少约50重量%的结晶聚丙烯,约10至约50重量%的分散在聚丙烯基质中的LLDPE,以及相容量的具有重均分子量的乙烯/α-烯烃塑性体 分子量在约5,000至约50,000之间,密度小于约0.90g / cm 3,熔体指数为至少约50dg / min。 该共混物可用于形成熔融纺丝和熔喷纤维。 还公开了由共混物制成的纺粘粘合熔喷吹纺粘合织物。
摘要:
Polyolefins, in particular polypropylene, are stabilized against UV degradation by a system of ethylene vinyl acetate, containing at least 20% by weight vinyl acetate and one or more of a nickel or zinc-N,N'-dialkyldithiocarbamate or a piperidine derivative such as bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate.
摘要:
Thermoplastic adhesive compositions such as hot melts containing conventional components are improved considerably by the inclusion of acid or acid derivative grafted polyolefins particularly acrylic acid-grafted polypropylene, polyethylene and/or ethylene-propylene polymer substances. Alternatively, novel adhesive compositions are prepared in which the polyolefin constituent is entirely a grafted polyolefin.
摘要:
Specific thermoplastic compositions which are formulated to be exceptionally useful for adhesion to copper-containing metals are prepared from either glycidyl acrylate grafts of polypropylene based formulations with a minor elastomeric component or low density polyethylene based formulations grafted with acrylic acid and/or glycidyl acrylate and containing a minor elastomeric component.