摘要:
A dimensionally stable polyester melt blown web composition is disclosed. The polyester melt blown web is obtained by contacting the web with a solvent, and drying the web. The solvents which are used have total solubility parameters (S.sub.o) of 8.5 to 12.0 (cal/cm.sup.3).sup.1/2, solubility parameter component due to hydrogen bonding (S.sub.h) of 0.5 to 5.5 (cal/cm.sup.3).sup.1/2 and solubility parameter component due to polar forces (S.sub.p) of 0.5 to 7.0 (cal/cm.sup.3).sup.1/2). The polyesters used for such melt blown webs include poly(ethylene-terephthalate), poly(cyclohexylene dimethylene terephthalate) and blends and copolymers of these polymers.
摘要翻译:公开了尺寸稳定的聚酯熔喷纤维网组合物。 聚酯熔喷纤维网通过将纤维网与溶剂接触并干燥纤维网获得。 使用的溶剂的总溶解度参数(So)为8.5〜12.0(cal / cm 3)1/2,由于氢键(Sh)为0.5〜5.5(cal / cm 3)1/2的溶解度参数成分和溶解度参数 由于极性力(Sp)为0.5〜7.0(cal / cm 3)1/2)。 用于这种熔喷纤维网的聚酯包括聚(对苯二甲酸乙二醇酯),聚(亚环己基二亚甲基对苯二甲酸酯)和这些聚合物的共混物和共聚物。
摘要:
A propylene-graft-unsaturated polyester is disclosed comprising the reaction product of a polypropylene, an unsaturated polyester and a free radical initiator. The polypropylene-graft-unsaturated polyester is generally prepared by reacting at elevated temperatures using a peroxide. The polypropylene-graft-unsaturated polyester is very useful as a compatibilizing agent in blends of polyester and ethylene-propylene rubber to improve the impact strength of the polyester.
摘要:
Disclosed are certain polyester adhesive blend compositions comprising about 45-90 wt. percent of a copolyester, about 3-15 wt. percent of a plasticizer, and about 7-40 wt. percent of a tackifying resin. The blends are particularly useful in hot-melt glue gun applications.
摘要:
Disclosed are certain copolyesters comprising an acid component of (1) 60 to 75 mol % of terephthalic acid, and (2) 25 to 40 mol % of a dicarboxylic acid, and a glycol component of (1) 55 to 65 mol % 1,4-butanediol, and (2) 35 to 45 mol % one or more other aliphatic diols. The copolyester or formulation thereof with a tackifying resin has excellent properties for use as a glue gun adhesive.
摘要:
The hot-melt adhesives of the present invention comprise a blend of poly(propylene-co-higher 1-olefin), tackifying resin and crystalline propylene containing polymer. These hot-melt adhesive compositions have a novel combination of properties including strong T-peel and lap shear bonds to both low- and high-density polyethylene with excellent creep resistance at ambient temperatures. Therefore, these new hot-melt adhesives are excellent adhesives for applications such as sealing high-density polyethylene grocery bags and low-density shipping bags.
摘要:
This invention is directed to blends of polymers of 2-substituted norbornenes such as poly(2-methoxycarbonyl-5-norbornene) and plasticized poly(vinyl chloride). These blends provide plasticized poly(vinyl chloride) compositions having high clarity as well as improved low temperature flexibility and improved low temperature impact strength.
摘要:
The hot-melt adhesives of the present invention comprise a blend of polyethylene, tackifier resin, and ethylene-alkyl acrylate or alkenyl carboxylate copolymers. These adhesive compositions have low melt viscosities, good flexibility at 20.degree. F., and provide good page pull and page flex values on books bound with these adhesives. Therefore, these adhesive compositions are useful as hot-melt adhesives for use in bookbinding applications.
摘要:
The hot melt adhesives of the present invention comprise a blend of polyethylene, amorphous polypropylene and crystalline propylene containing polymer. These hot-melt adhesive compositions have a novel combination of properties such as short hot tack times and open times for the bonding of paraffin-modified corrugated board.