摘要:
Lithium-terminated polymers of one or more conjugated dienes and of one or more mono alkenyl arenes are coupled by reaction with an alkoxy silane coupling agent having the formula Rx—Si—(OR′)y, where x is 0 or 1, x+y=4, R and R′ are the same or different, R is selected from aryl hydrocarbon radicals, linear alkyl hydrocarbon radicals and branched alkyl hydrocarbon radicals, and R′ is selected from linear and branched alkyl hydrocarbon radicals, such that the resulting polymer composition contains less than about ten weight percent of uncoupled polymer diblock. The polymer compositions are subsequently selectively hydrogenated, and are useful in a variety of compounds and end use applications.
摘要翻译:一个或多个共轭二烯和一个或多个单链烯基芳烃的锂封端的聚合物通过与具有式R x -Si-(OR') 其中x为0或1,x + y = 4,R和R'相同或不同,R选自芳基烃基,直链烷基烃基和支链烷基烃基,R' 选自直链和支链烷基烃基,使得所得聚合物组合物含有小于约10重量%的未偶联聚合物二嵌段。 聚合物组合物随后被选择性氢化,并且可用于各种化合物和最终用途。
摘要:
A modular tailpipe riser kit includes a plurality of conduit modules that are selectively connectable to each other to support flow of exhaust gases through connected conduit modules. The plurality of conduit modules include a tailpipe coupling having a first end receivable and selectively securable to the outer surface of a tailpipe of an automobile, an elbow selectively connectable to the tailpipe coupling, and a riser extension selectively connectable to the elbow. The modular tailpipe riser kit further include a circumferential clamp that is receivable about the tailpipe coupling for selectively securing the tailpipe coupling about the outer surface of the tailpipe. A tailpipe riser that is fully assembled and ready for installation may also be provided.
摘要:
Various embodiments related to a tree guard are disclosed. One embodiment provides a modular tree guard assembly. Various other embodiments disclosed include one or more of the following: a multi-purpose top rail unit facilitating flexible installation of various side panel units and top rail accessories; modular side panel units including decorative units and urine guard units; corner and other post units; and various adjustable foot units. In one embodiment, a sign holder unit of the tree guard assembly is provided with different tamper proof bolts than are other elements of the assembly such that control over signage on the tree guard may be effectively given to a different entity than an entity with control over assembly of the rest of the tree guard unit. Various other embodiments related to tree guards are disclosed.
摘要:
A panel having an ornamental façade adapted for securing to a foundation. The panel may be assembled to produce a skirting system for building structures or in hedging/retaining-walls/walkways and other such landscape features. The panel has a member, which may be plastic, comprising an outwardly-directed surface to which the ornamental façade is affixed, and an inwardly-directed surface to which a plastic support framework is integrally coupled. Framework comprises a first section (of suitably shaped cross-section, tubular or solid) located generally along the periphery of the inwardly-directed surface and further can include an interconnect section extending between the first section. Right and left vertical supports may be coupled to the inwardly-directed surface. Each vertical support comprises an angle iron shaped extension, a top-end and lower-end of which has a respective ledge permanently affixed. Also included is a method of producing the panel having an ornamental façade adapted for securing to a foundation.
摘要:
Various embodiments related to a tree guard are disclosed. One embodiment provides an L shaped breakaway bracket for use with a modular tree guard assembly. The L shaped breakaway bracket includes a horizontal member extending substantially perpendicularly from a vertical member, wherein the vertical member is thinner and longer than the horizontal member. At least one fastener hole is provided in the horizontal member for receiving a fastener for securing the horizontal member to a rail. At least one fastener hole is provided in the vertical member for receiving a fastener for securing the vertical member to a post. The breakaway bracket is adapted to break along the intersection of the horizontal member and the vertical member and separate the rail from the post when a force that would otherwise be sufficient to deform the rail is applied to the rail.
摘要:
A modular tailpipe riser kit includes a plurality of conduit modules that are selectively connectable to each other to support flow of exhaust gases through connected conduit modules. The plurality of conduit modules include a tailpipe coupling having a first end receivable and selectively securable to the outer surface of a tailpipe of an automobile, an elbow selectively connectable to the tailpipe coupling, and a riser extension selectively connectable to the elbow. The modular tailpipe riser kit further include a circumferential clamp that is receivable about the tailpipe coupling for selectively securing the tailpipe coupling about the outer surface of the tailpipe. A tailpipe riser that is fully assembled and ready for installation may also be provided.