Abstract:
Pressure sensitive adhesives having flame retarding properties include a (meth)acrylate-based block copolymer, and at least 10% by weight of a halogen-free flame retarding agent. The adhesives may contain additional optional additives such as tackifying resins, plasticizers, and the like. The adhesives are prepared by blending the (meth)acrylate-based block copolymer, and the halogen-free flame retarding agent either in solvent or by a solventless process.
Abstract:
Compositions are described that are blends of a grafted copolymer and a polyamide. Methods of making the blended compositions are also described. The grafted copolymers are the reaction product of (1) a first compound having both an aziridinyl group and a polymeric group with (2) a second polymeric material having an acidic group. Blending the grafted copolymer with the polyamide can be used, for example, to increase the cohesive strength of the grafted copolymer.
Abstract:
The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a) M w of 5k to 30k, a T g
Abstract:
Pressure sensitive adhesives having flame retarding properties include a (meth)acrylate-based block copolymer, and at least 10% by weight of a halogen-free flame retarding agent. The adhesives may contain additional optional additives such as tackifying resins, plasticizers, and the like. The adhesives are prepared by blending the (meth)acrylate-based block copolymer, and the halogen-free flame retarding agent either in solvent or by a solventless process.
Abstract:
Compounds are described that have both an aziridinyl group as well as a polymeric group. Methods of making these compounds are also described. The aziridinyl group of the compound can be reacted with an acidic group on a second compound resulting in the opening of the aziridinyl ring and the attachment of the polymeric group to the second compound.
Abstract:
Grafted compounds are formed by reacting (1) a first compound having both an aziridinyl group and a polymeric group with (2) a second compound having at least one acidic group. This reaction results in the opening of the aziridinyl ring on the first compound by the acidic group on the second compound and the formation of an attachment group that connects polymeric group of the first compound to the second compound. In some embodiments, the second compound is a polymeric material having multiple acidic groups and the product of the reaction of the first compound with the second compound results in the formation of a grafted copolymer.
Abstract:
Fasteners for producing double blind joints where the fastener is not visible or accessible are provided. The fasteners comprise a shape memory polymer that may be used to fasten workpieces by heating the fasteners, inducing recovery of the original, permanent shape of the fasteners
Abstract:
Pressure-sensitive adhesive compositions and articles containing the pressure-sensitive adhesives are provided. The pressure-sensitive adhesives contain an (meth)acrylic-based elastomeric material prepared an alkyl (meth)acrylate having an alkyl groups that is branched and that contains at least 14 carbon atoms.
Abstract:
Pressure sensitive adhesive tapes having flame retarding properties include a backing and a pressure sensitive adhesive layer. The pressure sensitive adhesive layer includes a (meth)acrylate-based block copolymer, and may also include at least 10% by weight of a halogen-free flame retarding agent. The adhesive layer may contain additional optional additives such as tackifying resins, plasticizers, and the like. The tapes are prepared by coating the flame retarding pressure sensitive adhesive onto the backing, either in solvent or by a solventless process.
Abstract:
Oxazolinyl-containing compounds having a single oxazolinyl group plus a first polymeric group are described. Grafted compounds are also described that are the product of a reaction of an oxazolinyl-containing compound with a second compound that has one or more acidic groups to form a grafted compound. In some embodiments, the second compound is a polymeric material having at least one acidic group and the reaction product is a grafted copolymer. Blended compositions of the grafted copolymer with a polyamide are also described.