Abstract:
The present disclosure provides a polyolefin-based composition made from or containing (A) a first grafted polyolefin composition, (B) a second grafted polyolefin composition made from or containing a first metallocene-catalyzed linear low density polyethylene grafted with an unsaturated monomer, (C) a second metallocene-catalyzed linear low density polyethylene composition, (D) a Ziegler-Natta-catalyzed linear low density polyethylene composition, (E) an elastomeric composition made from or containing (i) an elastomeric ethylene copolymer and (ii) an ethylene-propylene elastomer, and (F) a tackifier composition. Optionally, the polyolefin- based composition may be further made from or contain an additives composition. The polymeric composition is suitable for use as a tie-layer adhesive composition.
Abstract:
The present disclosure provides a polyolefin-based composition suitable for use as adhesives and/or tie-layer adhesive compositions as well as a multi-layered structure made from and/ or containing the polyolefin-based composition. The polyolefin-based composition is made from and/or contains (a) a grafted polyolefin composition, (b) a first polymer composition, (c) a polypropylene-containing blend composition, and (d) optionally, an additives composition having one or more additives.
Abstract:
Multilayer structures having layers of a styrene polymer, polyethylene, propylene polymer, and common tie layers of a styrene-butadiene-styrene tπblock copolymer-containing adhesive.
Abstract:
Improved grafted propylene copolymer compositions and adhesive blends containing same are provided. The grafts are obtained by reacting propylene-ethylene impact copolymers having specified rubber contents and molecular weight distributions with ethylenically unsaturated acids or acid derivatives, such as maleic anhydride.
Abstract:
Adhesive compositions, processes of forming adhesive compositions, and multi -layer films are discussed herein. Hie processes generally include contacting an olefin monomer with a catalyst system within a polymerization zone to form an olefin based polymer under polymerization conditions sufficient to form the olefin based polymer, the catalyst system including a metal component generally represented by the formula: MR X ; wherein M is a transition metal, R is a halogen, an aikoxy, or a hydrocarboxyl group and x is the valence of the transition metal, wherein the catalyst system further includes an internal donor (ID) comprising a C 3 -C 6 cyclic ether: and withdrawing the olefin based polymer from the polymerization zone; and melt blending the olefin based polymer with a functionalized poly olefin to form a polyolefm based adhesive composition, wherein the process is an in-line process.
Abstract translation:本文讨论了粘合剂组合物,形成粘合剂组合物的过程和多层膜。 方法通常包括使烯烃单体与催化剂体系在聚合区内接触以在足以形成烯烃基聚合物的聚合条件下形成烯烃基聚合物,所述催化剂体系包含通常由下式表示的金属组分:MR X 子>; 其中M是过渡金属,R是卤素,烷氧基或烃基,并且x是过渡金属的化合价,其中所述催化剂体系进一步包括含有C 3键的内给体(ID) C 6 -C 6环醚:从聚合区中取出烯烃基聚合物; 和将烯烃基聚合物与官能化聚烯烃熔融共混以形成基于聚烯烃的粘合剂组合物,其中该方法是在线方法。 p>
Abstract:
A polyolefin-based composition made from or containing (A) a first polymer composition made from or containing a polyolefin grafted with an unsaturated monomer, (B) a second polymer composition made from or containing a polyethylene, and (C) a third polymer composition made from or containing (i) a first polyisobutylene and (ii) a second polyisobutylene. The first polyisobutylene has a Viscosity Average Molecular Weight (VAMWi), and the second polyisobutylene has a Viscosity Average Molecular Weight (VAMW2), wherein VAMWi ≠ VAMW2. The polyolefin-based composition is useful as an adhesives or a tie-layer adhesive composition for multi-layered structures. In particular, the composition is useful as an adhesive to bind a metal layer to a dissimilar substrate.
Abstract:
An oriented multilayer structure for shrink applications having a polymeric layer, a tie layer adhered to said polymeric layer. The tie layer is made up of the reaction product of a live, grafted polyolefin and an olefin elastomer. The multilayer structure is oriented and the tie layer provides strong adhesion to barrier layers even at high orientation levels.
Abstract:
Tie-layer adhesives having graft compositions for bonding to metal substrates is disclosed. The graft compositions are made up of the reaction product of a live, grafted polyolefin and an olefin elastomer. The grafted polyolefin is first made by heating a polyolefin and an unsaturated monomer. Further reaction of the live, grafted polyolefin with an olefin elastomer provides the graft composition. Grafting efficiency is boosted dramatically by the presence of the olefin elastomer and use of the additional reaction step. The graft composition, when formulated into a tie-layer adhesive provides improved bonding to metal substrates.
Abstract:
Improved fuel additives and distillate fuels containing said additives are described. The additives impart improved low temperature flow and filterability and also impart stability to distillate fuels, particularly hard-to-treat distillate fuels. The additives are a combination of an olefin/vinyl carboxylate polymer and two specific polyimides having different alkyl substituent.
Abstract:
The present disclosure provides a polyolefin-based composition, suitable for use as a tie-layer adhesive composition, and a process for making the polyolefin-based composition. The polyolefin-based composition is made from and/or contains a grafted polyolefin copolymer composition, a base resin composition, and optionally, an additives composition. The grafted polyolefin copolymer composition is made from and/or contains a grafted polyolefin composition, an olefin elastomer composition, and a long-chain branched polyolefin composition. The grafted polyolefin is coupled to the olefin elastomer and the long-chain branched polyolefin.