摘要:
This invention relates to an adhesive composition comprising: a random propylene polymer component having a heat of fusion of between 1 and 70 J/g and an mm triad tacticity index of at least 75%; and a functionalized polymer component comprising a C2-C20 olefin comprising at least 0.1 wt% of a functional group; wherein the adhesive composition has a T-Peel adhesion on a polar substrate at 2O0C of at least 175 N/m (1 lb/in) and a T-Peel adhesion on a non- polar substrate at 200C of at least 175 N/m Pa (1 lb/in) and where the polarity of the polar substrate is at least 0.10 units higher than the polarity of the non-polar substrate, wherein functionalized syndiotactic rich polyolefm polymer is present at 5 wt% or less, based upon the weight of the composition. This invention further relates to methods to produce the adhesive and articles comprising the adhesive.
摘要:
A composition which comprises (A) an ethylene/ alpha -olefin copolymer rubber exhibiting an intrinsic viscosity [ eta ] of 3.5 to 6.8 dl/g as determined in decalin at 135 DEG C, (B) a mineral oil-base softener, (C) a crystalline alpha -olefin polymer having a degree of crystallinity of 50 % or above, and (D) a noncrystalline alpha -olefin polymer exhibiting a melt viscosity of 50000cP or below at 190 DEG C and a degree of crystallinity of less than 50 % in amounts of 20 to 63 %, 35 to 78 %, 1 to 12 %, and 1 to 12 % by mass respectively based on the total amount of the components (A), (B), (C) and (D), and at least part of which is crosslinked.
摘要:
Uses of syndiotactic/atactic block polypropylene are provided in which the molecular weight thereof is preferably at least 120kD. The syndiotactic/atactic block polypropylene may be used as a polypropylene modifier, a component in an adhesive composition, a shock absorber component, a waterproof membrane component, a packaging film or component thereof, a shapable composition component, and an acoustic absorbent material component, a composition for moulding into a footwear component, a bitumen modifier, a compatibiliser, an emulgator or an emulsifier, as a viscosity improver, and as a spilled oil absorber.
摘要:
The invention includes a blend composition comprising (a) from 1 to 15 weight percent of amorphous polypropylene (b) from 99 to 85 weight percent of crystalline polypropylene, wherein the molecular weight of the amorphous polypropylene is lower than the molecular weight of the crystalline polypropylene; the molecular weight (Mw) of the amorphous polypropylene is higher than 50,OOO, preferably 100,OOO g/mole; the amorphous polypropylene has a MWD less than 3; and wherein the percentages are based on total amorphous plus crystalline polypropylene. Preferably, amorphous and crystalline polypropylenes are preferably at least 90 weight percent propylene units. Preferably, the amorphous polypropylene has a glass transition temperature greater than -10 DEG C. The invention includes processes for preparing compositions of the invention, including a multistage process. Additionally the invention includes articles, sheets, films, foams and fibers comprising or prepared from compositions of the invention as well as processes for making the things, preferably processes involving stretching a composition of the invention. The processes include a process comprising extrusion or injection blow molding; extruding, or thermoforming a composition of the invention; as well as a process comprising reacting a composition of the invention with a coupling agent.
摘要:
The invention includes a blend composition comprising (a) from 1 to 15 weight percent of amorphous polypropylene (b) from 99 to 85 weight percent of crystalline polypropylene, wherein the molecular weight of the amorphous polypropylene is lower than the molecular weight of the crystalline polypropylene; the molecular weight (Mw) of the amorphous polypropylene is higher than 50,OOO, preferably 100,OOO g/mole; the amorphous polypropylene has a MWD less than 3; and wherein the percentages are based on total amorphous plus crystalline polypropylene. Preferably, amorphous and crystalline polypropylenes are preferably at least 90 weight percent propylene units. Preferably, the amorphous polypropylene has a glass transition temperature greater than -10 DEG C. The invention includes processes for preparing compositions of the invention, including a multistage process. Additionally the invention includes articles, sheets, films, foams and fibers comprising or prepared from compositions of the invention as well as processes for making the things, preferably processes involving stretching a composition of the invention. The processes include a process comprising extrusion or injection blow molding; extruding, or thermoforming a composition of the invention; as well as a process comprising reacting a composition of the invention with a coupling agent.
摘要:
The invention relates to a thermoplastic elastomer comprising a blend of a rubber and a thermoplastic resin, the rubber being at least partially cured. The invention is characterized in that the thermoplastic elastomer comprises: A) a thermoplastic resin, B) an amorphous polyolefin, selected from an amorphous alpha -olefin homopolymer, in which the alpha -olefin has 3-20 C-atoms, and an amorphous alpha -olefin copolymer, based on ethylene and a alpha -olefin having 3-20 C-atoms, and C) an at least partially cured rubber, wherein the ratio of component (B) to components (A + B) is between 15 and 75 wt.%, the component C is present between 25 and 90 wt.% (based on (A + B + C)), and wherein the amorphous polyolefin (component B) is uncured.
摘要翻译:本发明涉及一种包含橡胶和热塑性树脂的共混物的热塑性弹性体,该橡胶至少部分固化。 本发明的特征在于,热塑性弹性体包括:A)热塑性树脂,B)选自α-烯烃具有3-20个C原子的无定形α-烯烃均聚物的无定形聚烯烃,以及无定形α-烯烃 烯烃共聚物,基于乙烯和具有3-20个碳原子的α-烯烃,和C)至少部分固化的橡胶,其中组分(B)与组分(A + B)的比例为15至75 重量%,组分C存在25至90重量%(基于(A + B + C)),并且其中无定形聚烯烃(组分B)未固化。
摘要:
The addition of small amounts of low molecular weight visco-elastic rubber material to rubber-modified polypropylene has been found to reduce the severity of flow marks that occur on the surface of injection molded articles.
摘要:
[Object] To provide a hot melt adhesive agent which is excellent in adhesive properties to a substrate material such as paper and a polyolefin, is also excellent in adhesive properties from a low temperature (around 4°C) to a high temperature (around 50°C), has little viscosity change even when a long time elapses, and has tack that is not too high. [Solution] Provided is a hot melt adhesive agent for a container with a straw comprising an amorphous poly-a-olefin (A) and a metallocene polymer (B).
摘要:
Die Erfindung betrifft eine Heissschmelzklebstoffzusammensetzung umfassend a) mindestens ein bei 25°C festes ataktisches Poly-α-olefin (APAO); b) mindestens ein Kohlenwasserstoffharz mit einem Erweichungspunkt von mindestens 80°C, gemessen nach der Ring & Kugel-Methode gemäss DIN EN 1238; und c) mindestens ein Maleinsäureanhydrid-gepfropftes Wachs mit einem Erweichungspunkt von nicht mehr als 150°C, gemessen nach der Ring & Kugel-Methode gemäss DIN EN 1238, welches ein Maleinsäureanhydrid-gepfropftes Polypropylen-Wachs oder ein Maleinsäureanhydrid-gepfropftes Polyethylen-Wachs ist, wobei der Anteil an dem mindestens einen Maleinsäureanhydrid-gepfropften Wachs in der Heissschmelzklebstoffzusammensetzung mindestens 3 Gew.-% beträgt. Die erfindungsgemäße Heissschmelzklebstoffzusammensetzung zeichnet sich durch eine niedrige Reaktivierungstemperatur bei hohem Wärmestand und guter Haftung zu ABS und unpolaren Polyolefin-Materialien aus. Sie eignet sich sehr gut für die Folienkaschierung durch Vakuum-Tiefziehkaschieren, insbesondere für Anwendungen im Automobilbau.
摘要翻译:本发明涉及一种热熔粘合剂组合物包含:a)至少一种在25℃下为固体无规聚α烯烃(APAO); b)至少一种具有至少80℃的软化点烃树脂,通过根据DIN EN 1238的环球法方法测量; 和c)至少一种马来酸酐接枝的蜡具有不超过150℃的软化点,通过根据DIN EN 1238,这是一种马来酸酐接枝的聚丙烯蜡,或马来酸酐接枝的聚乙烯蜡的环与球法测得的 其中,在所述的热熔性粘合剂组合物中的马来酸酐接枝蜡的比例为至少3重量%的至少。 本发明的热熔粘合剂组合物的特征在于低的活化温度高的热稳定性和良好的粘合性ABS和非极性聚烯烃材料。 它是通过真空热成型层压非常适合于薄膜层压,特别是用于在汽车行业应用中。