# US 2018/0023248 A1 · Lubricious Silicone Cable Jackets and Cable Assemblies Formed Therefrom > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0023248 A1 - Document ID: US20180023248A1 - Status: Published application - Kind: A1 - Application number: 15/217,782 - Filed: 2016-07-22 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: Tyco Electronics Corporation - Applicants: Tyco Electronics Corporation - Inventors: Stephen V. Davis; Robert Lee Beckman; Iver Skye Olsen - Web page: https://patentgrep.com/patent/US20180023248A1 ## CPC - D07B 1/162: {characterised by a plastic or rubber enveloping sheathing} - C09D 183/04: Polysiloxanes - G02B 6/4436: {Heat resistant} - H01B 3/28: natural or synthetic rubbers - H01B 3/46: silicones - H01B 3/465: {Silicone oils} - H01B 7/28: {Protection against damage caused} by moisture, corrosion, chemical attack or weather - D07B: ROPES OR CABLES IN GENERAL (joining ropes or cables to one another or to other objects B65H69/00, F16G11/00; {mountaineering ropes A63B29/02}; mechanical finishing or dressing of ropes D02J; {braiding D04C}; decorative ropes or cords D04D; suspension cables for bridges E01D19/16; specially adapted for driving, or for being driven by, pulleys or other gearing elements F16G9/00; electric cables or joints insofar as electrical aspects are essential H01B, H01R) - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) ## Abstract A silicone cable jacket and a cable assembly formed therefrom exhibits lubricious properties. The silicone cable jacket includes a silicone elastomer and a PSQ additive. The PSQ additive is selected as a polyalkylsilsesquioxane, a polyarylsilsesquioxane, a polyalkylaryl-silsesquioxane, or a mixture thereof. The silicone cable jacket exhibits a lower static and dynamic coefficient of friction (COF) as measured according to ASTM D 1894-14 and an enhanced level of abrasion resistance in a DIN 53516 test as compared to a similar cable jacket without the PSQ additive. ## Claims ### Claim 1 A silicone cable jacket that exhibits lubricious properties, the cable jacket comprising: a silicone elastomer; and a PSQ additive, the PSQ additive being selected from the group of polyalkylsilsesquioxanes, polyarylsilsesquioxanes, polyalkylarylsilsesquioxanes, or a mixture thereof. ### Claim 2 (depends on 1) The cable jacket according to claim 1, wherein the silicone elastomer is a liquid silicone rubber (LSR). ### Claim 3 (depends on 1) The cable jacket according to claim 1, wherein the silicone elastomer is a high consistency rubber (HCR). ### Claim 4 (depends on 3) The cable jacket according to claim 3, wherein the cable jacket further comprises a layer of a liquid silicone rubber (LSR) that at least partially encapsulates the silicone elastomer and is bonded thereto. ### Claim 5 (depends on 1) The cable jacket according to claim 1, wherein the PSQ additive is selected as one from the group of polymethylsilsesquioxane, polyethylsilsesquioxane, polypropylsilsesquioxane, polyphenylsilsesquioxane, polymethylphenylsilsesquioxane, polyethylphenylsilsesquioxane, or a mixture thereof. ### Claim 6 (depends on 5) The cable jacket according to claim 5, wherein the PSQ additive is polymethylsilsesquioxane. ### Claim 7 (depends on 1) The cable jacket according to claim 1, wherein the PSQ additive is incorporated into the cable jacket in an amount within the range of about 10 wt. % to about 30 wt. % based on the overall weight of the cable jacket. ### Claim 8 (depends on 1) The cable jacket according to claim 1, wherein the PSQ additive comprises one or more hydroxyl- or alkoxy-functional groups. ### Claim 9 (depends on 8) The cable jacket according to claim 8, wherein the PSQ additive and the silicone elastomer are cross-linked. ### Claim 10 (depends on 1) The cable jacket according to claim 1, wherein the cable jacket with the PSQ additive exhibits at least a 30% reduction in weight loss in a DIN 53516 test as compared to a similar cable jacket without the PSQ additive. ### Claim 11 (depends on 1) The cable jacket according to claim 1, wherein the cable jacket with the PSQ additive exhibits a lower static and dynamic coefficient of friction (COF) as measured according to ASTM D 1894-14 than a similar cable jacket without the PSQ additive. ### Claim 12 (depends on 11) The cable jacket according to claim 11, wherein the cable jacket with the PSQ additive exhibits a static COF that is at least 25% lower than the static COF than a similar cable jacket without the PSQ additive. ### Claim 13 (depends on 1) The cable jacket according to claim 1, wherein the cable jacket with the PSQ additive exhibits at least a 50% reduction in weight loss in a DIN 53516 abrasion test, at least a 40% lower static coefficient of friction (COF) as measured according to ASTM D 1894-14, and a decrease in tear resistance by more than 15% in an ASTM D 624-00(12) test as compared to a similar cable jacket without the PSQ additive. ### Claim 14 A cable assembly, the cable assembly comprising: a cable; and a cable jacket, wherein the cable jacket comprises a silicone elastomer; and a PSQ additive, the PSQ additive being selected from the group of polyalkylsilsesquioxanes, polyarylsilsesquioxanes, polyalkylarylsilses-quioxanes, or a mixture thereof. ### Claim 15 (depends on 14) The cable assembly according to claim 14, wherein the cable assembly passes at least 150 cycles of autoclave conditioning without the occurrence of any bonding defects between the cable jacket and the cable. ### Claim 16 (depends on 14) The cable assembly according to claim 14, wherein the silicone elastomer is a high consistency rubber (HCR) and the PSQ additive is polymethylsilsesquioxane; wherein the PSQ additive is incorporated into the cable jacket in an amount within the range of about 10 wt. % to about 30 wt. % based on the overall weight of the cable jacket. ### Claim 17 (depends on 16) The cable assembly according to claim 16, wherein the cable jacket further comprises a layer of a liquid silicone rubber (LSR) that at least partially encapsulates the silicone elastomer and is bonded thereto. ### Claim 18 (depends on 14) The cable assembly according to claim 14, wherein the PSQ additive comprises one or more hydroxyl- or alkoxy-functional groups, such that the PSQ additive and the silicone elastomer can be cross-linked. ### Claim 19 (depends on 14) The cable assembly according to claim 14, wherein the cable jacket with the PSQ additive exhibits a lower static and dynamic coefficient of friction (COF) as measured according to ASTM D 1894-14 and at least a 30% reduction in weight loss in a DIN 53516 test as compared to a similar cable jacket without the PSQ additive; wherein the static COF exhibited by the cable jacket with the PSQ additive is at least 25% lower than the static COF exhibited by the similar cable jacket without the PSQ additive. ### Claim 20 (depends on 14) The cable assembly according to claim 14, wherein the cable assembly is used in a medical, automotive, aerospace, defense, or marine application.