1. A system for authenticating a requesting entity in a subnet communications environment, comprising:
a resource provider node configured to determine client identification of a client node associated with the requesting entity by receiving a source identifier from the requesting entity and associating the source identifier with one or more permanent identifiers of the client node, wherein the source identifier is a source logical identifier (SLID), the one or more permanent identifiers are one or more globally unique identifiers (GUID) of the client node;
wherein the associating the SLID with one or more globally unique identifiers (GUID) of the client node further comprises forwarding the SLID to a subnet administrator; and receiving, from the subnet administrator, the one or more GUIDs corresponding to the SLID;
the resource provider node further configured to determine whether the requesting entity associated with the client node is acting in a supervisor capacity by defining a supervisor only privileged key for each client node in the subnet communications environment, and by determining whether a connection request received from the requested entity includes the supervisor only privileged key corresponding to the client node of the requesting entity; and
the resource provider node further configured to return a key to the requesting entity upon a determination that the client identification of the client node indicates that the client node is permitted to access one or more resources of the provider node, and that the client node is acting in a supervisor capacity.
2. The system of claim 1, further comprising a first table maintained within the resource provider node, the first table associating accessible resources for each of a plurality of known GUIDs.
3. The system of claim 2, further comprising a second table maintained within the resource provider node, the second table associating GUIDs to SLIDs.
4. The system of claim 3, further comprising a third table in the resource provider node, the third table comprising an association of keys for each GUID known to the resource provider node.
5. The system of claim 1, wherein the determining whether the requesting entity associated with the client node is acting in a supervisor capacity further comprises:
defining a supervisor only privileged key for each client node in the communications environment; and
determining whether a connection request received from the requested entity includes the supervisor only privileged key corresponding to the client node of the requesting entity.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-26. (canceled)
27. A method of forming an article which includes a substrate and a capstock material, wherein said substrate material comprises a polymer which is different than the capstock material and said capstock material comprises a melt-processable thermoplastic composition comprising:
(a) 50-99.5 wt % of a melt-processable thermoplastic polymer; and
(b) 0.5 to 50 wt % of a particulate polymer comprising a homopolymer of methyl methacrylate or a copolymer comprising the residues of a monomer mixture comprising at least 50 wt % methyl methacrylate and up to 50 wt % of a copolymerisable acrylic comonomer comprising at least one alkyl acrylate or methacrylate and 0 to 10 wt % of a copolymerisable cross-linking monomer, said particles having a maximum dimension of 5 mm;
the method comprising the steps of applying the capstock material over a layer of the substrate material and then calendaring said capstock material and said substrate material with calendaring rolls to form said article, wherein said capstock material contacts said calendar rolls for a shorter period of time than said substrate material.
28. A method as claimed in claim 27 wherein said particulate polymer further includes at least 0.1 wt % to 10 wt % of a copolymerisable cross-linking monomer.
29. A method as claimed in claim 28 wherein the particulate polymer comprises a copolymer formed from the residues of a monomer mixture comprising 70 to 95 wt % methyl methacrylate, 5 to 30 wt % of said copolymerisable acrylic comonomer and 0.1 to 5 wt % of said copolymerisable cross-linking monomer.
30. A method as claimed in claim 29 wherein said copolymerisable acrylic comonomer of the particulate polymer comprises at least one alkyl acrylate.
31. A method as claimed in claim 30 wherein said alkyl acrylate is selected from the group consisting of ethyl acrylate or butyl acrylate.
32. A method as claimed in claim 29 wherein said copolymerisable acrylic comonomer is present in an amount of at least 12 wt % and less than 18 wt % of said particulate polymer.
33. A method as claimed in claim 28 wherein said particulate polymer comprises a copolymer comprising 5 wt % and less than 20 wt % of said copolymerisable acrylic comonomer and at least 0.3 wt % and 1 wt % or less of said copolymerisable cross-linking monomer.
34. A method as claimed in claim 27 wherein the particulate polymer comprises a copolymer and said copolymerisable acrylic comonomer comprises at least one alkyl acrylate.
35. A method as claimed in claim 34 wherein said alkyl acrylate is selected from the group consisting of ethyl acrylate or butyl acrylate.
36. A method as claimed in claim 34 wherein said copolymerisable acrylic comonomer is present in an amount of at least 12 wt % and less than 18 wt % of said particulate polymer.
37. A method as claimed in claim 27 wherein said particles have a maximum dimension which is less than 1 mm.
38. A method as claimed in claim 27 wherein the weight average diameter of said particles of the particulate polymer is less than 500 \u03bcm as measured in accordance with ASTM D1921.
39. A method as claimed in claim 27 wherein the weight average diameter of said particles of the particulate polymer is greater than 150 \u03bcm as measured in accordance with ASTM D1921.
40. A method as claimed in claim 27 wherein at least 20 wt % of said particles of the particulate polymer are between 60 (250 \u03bcm) and 80 (177 \u03bcm) mesh.
41. A method as claimed in claim 28 wherein said particulate polymer comprises a copolymer formed from the residues of a monomer mixture comprising at least 79.9 wt % methyl methacrylate.
42. A method as claimed in claim 33 wherein said particulate polymer comprises a copolymer formed from the residues of a monomer mixture comprising at least 79.9 wt % methyl methacrylate.
43. A method as claimed in claim 27 wherein said particulate polymer is present in an amount of at least 3 wt % and less than 20 wt % of said melt-processable thermoplastic composition.
44. A method as claimed in claim 27 wherein the melt-processable thermoplastic polymer forms a matrix and is a polymethyl methacrylate homopolymer or a copolymer derived from a monomer mixture comprising at least 60 wt % methyl methacrylate and up to 40 wt % of at least one other copolymerisable alkyl acrylate or methacrylate.
45. A method as claimed in claim 33 wherein the melt-processable thermoplastic polymer forms a matrix and is a polymethyl methacrylate homopolymer or a copolymer derived from a monomer mixture comprising at least 60 wt % methyl methacrylate and up to 40 wt % of at least one other copolymerisable alkyl acrylate or methacrylate.
46. A method as claimed in claim 27 wherein the melt-processable thermoplastic composition is formed by mixing said melt-processable polymer and said particulate polymer by extrusion under conditions such that said particles of the particulate polymer are broken down.
47. A method as claimed in claim 27 wherein a surface of the article formed of said melt-processable thermoplastic composition has a surface gloss measured at 75\xb0 observation angle (according to ASTM D3679) of less than 65.
48. A method as claimed in claim 27 wherein said article is a component for use in construction and is co-extruded component wherein said substrate is made of PVC, HIPS, or ABS.