摘要:
The present invention is related to adhesive compositions and their applications. In particular, the adhesive compositions described herein comprise an ethylene-based polymer and a propylene-based polymer with varying comonomer content.
摘要:
A propylene-alpha-olefin polymer that includes at least 50 % by weight propylene, has a ratio of z average molecular weight (Mz) to number average molecular weight (Mw) (Mz/Mw) from greater than 20 to no greater than 50, and a ratio of Mz to weight average molecular weight (Mw) (Mz/Mw) of greater than 2.5, and exhibits a viscosity of no greater than 2,500 centipoise at 190°C, and a hot melt adhesive composition that includes the propyl ene-alpha-olefin polymer, a first wax consisting of a functionalized wax, and a second wax different from the first wax, the adhesive composition exhibiting a viscosity of no greater than 2,500 centipoise at 177°C.
摘要:
The invention provides adhesives comprising at least one polymer component which contains at least 65 weight percent propylene, at least one nucleator and at least one functionalized wax. The inventive adhesives have increased heat resistance and decreased set- time, making them particularly well suited for assembly and packaging applications.
摘要:
Object: To provide adhesive resin compositions improved in heat resistance without deteriorations in adhesive strength and flexibility. Solution: An adhesive resin composition comprises 30 to 98 wt% of an ethylene/vinyl acetate copolymer (a) and 70 to 2 wt% of a propylene resin composition (P) described below (wherein the total of the component (a) and the component (P) is 100 wt%). The propylene resin composition (P) comprises 60 to 0 wt% of a propylene polymer (b) having a melting point of 120 to 170°C and a melt flow rate of 0.1 to 500 g/10 min, and 40 to 100 wt% of a propylene polymer (c) having a melting point of less than 120 °C or showing no melting points and having a melt flow rate of 0.1 to 500 g/10 min (wherein the total of the component (b) and the component (c) is 100 wt%).
摘要:
It is an object of the present invention to provide adhesive compositions having excellent flexibility, rubber elasticity, mechanical properties, heat resistance and low-temperature properties. An adhesive composition of the invention includes 10 to 70 parts by weight of a soft polypropylene resin composition (X) which includes 40 to 98 wt% of a propylene copolymer (A) satisfying the following requirements (A1) to (A8) and 2 to 60 wt% of a crystalline isotactic polypropylene (B) satisfying the following requirements (B1) to (B3), and 30 to 90 parts by weight of a tackifier (C) (wherein the total of the component (X) and the component (C) is 100 parts by weight), wherein (A1) Shore A hardness: 20 to 90; (A2) the copolymer comprises a copolymer with C 3 units at 51 to 90 mol%, C 2 units at 7 to 24 mol% and C 4-20 ±-olefin units at 3 to 25 mol%; (A3) Mw/Mn: 1.2 to 3.5; (A4) mm: 85 to 99.9%; (A5) value B: 0.8 to 1.3; (A6) 2,1-insertion ratio: less than 1%; (A7) Tg: -10°C to -50°C; (A8) MFR (230°C): 0.5 to 500 g/10 min; (B1) Tm: 100 to 175°C; (B2) mmmm: 90 to 99.8%; (B3) MFR (230°C) : 0.1 to 100 g/10 min.
摘要:
The invention relates to a novel halogen-free and acid-free, readily soluble priming bonding agent for polyolefins, said agent containing (meth)acrylate-grafted, amorphous polyolefins.
摘要:
A tacky resin composition which has proper initial tackiness, is sufficiently inhibited from rising in tackiness with time, can keep tackiness at a proper range even when it receives a slight heat history or is stored for a long time, has very small dependence on peeling speed, and can provide high transparency to a pressure-sensitive adhesive film or sheet as required, and a pressure-sensitive adhesive film or sheet for the surface protection of an article, which is obtained form the tacky resin composition. The tacky resin composition comprises (A) 5 to 80 parts by weight of an olefin polymer (component A), (B) 5 to 80 parts by weight of an ethylene/unsaturated ester copolymer (component B) and (C) 1 to 60 parts by weight of a styrene-based elastomer and/or an olefin-based elastomer (component C) based on 100 parts by weight of the total of the components A, B and C.
摘要:
A copolymer comprising units derived from propylene and at least one comonomer selected from the group consisting of ethylene and C 4-20 α-olefins, the copolymer having (i) a content of units derived from propylene of greater than about 50 mole percent, (ii) a Brookfield viscosity at 190C from about 50 to about 100,000 cP, (iii) an MWD from about 1.5 to about 6, and (iv) containing less than about 50 ppm metal.
摘要:
An adhesive material and a pressure sensitive adhesive film containing the same of the present invention are characterized in that they satisfy the following requirements (a) and (b). These adhesive material and pressure sensitive adhesive film of the present invention exhibit excellent stability against not only light and heat but also various chemicals. Consequently, they are suitable applications in surface protection uses, transport storage uses, heating treatment uses, grinding/polishing uses, cutting processing uses and transport/storage uses in the fields of electronic/semiconductor materials, optical/display materials and the like, where demands for performances and qualities are strict. The above requirements are: (a) an olefinic polymer is contained, and (b) by measurement according to a differential scanning calorimetry test, the melting temperature Tm is in the range of 80°C to 180°C and the heat of fusion ”H is at least 1 J/g.
摘要:
The invention relates to novel adhesive alpha-olefin inter-polymers which are largely amorphous and have a rheological behavior that makes them suitable for adhesive use, both without and with minimized amounts of tackifying resins. Specifically, the invention poly-alpha olefin inter-polymer may be composed of A) from 60 to 94 % of units derived from one alpha mono-olefin having from 3 to 6 carbon atoms and B) from 6 to 40 mol % ofunits derived from one or more other mono-olefins having from 4 to 10 carbon atoms and at least one carbon atom more than A); and C) optionally from 0 to 10 mol % of units derived from another copolymerizable unsaturated hydrocarbon, different from A) and B); the diad distribution of component A in the polymer as determined by 13 C NMR as described herein showing a ratio of experimentally determined diad distribution over the calculated Bernoullian diad distribution of less than 1.07; and the storage modulus G' of said polymer, determined upon cooling as described herein, intersecting a value of 3.10 5 Pa at a temperature of less than 85 DEG C. The invention also describes polymerization processes suitable for the manufacture of these adhesive alpha-olefin inter-polymers.
摘要翻译:本发明涉及新颖的粘合剂α-烯烃互聚物,其大部分是无定形的并且具有使得它们适用于粘合剂使用的流变行为,无论是否含有和具有最小量的增粘树脂。 具体而言,本发明聚-α烯烃互聚物可以由以下组分组成:A)60-94%衍生自具有3至6个碳原子的α-单烯烃的单元和B)6-40摩尔%衍生自 一种或多种具有4至10个碳原子和至少一个大于A的碳原子的单烯烃; 和C)任选地0至10mol%衍生自不同于A)和B)的另一种可共聚不饱和烃的单元; 如本文所述通过13 C NMR测定的组分A在聚合物中的二元分布显示实验确定的二元分布与计算的伯努利二元分布的比率小于1.07; 并且所述聚合物的储能模量G'(如本文所述在冷却时测定)在小于85℃的温度下与3.105Pa的值相交。本发明还描述了适用于制造这些粘合剂α-烯烃的聚合方法 聚物。