Invention Grant
- Patent Title: Liquid polymer
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Application No.: US11580662Application Date: 2006-10-13
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Publication No.: US07351768B2Publication Date: 2008-04-01
- Inventor: Michael Joseph Rachita , Vanessa Marika Guscoff , Lawson Gibson Wideman
- Applicant: Michael Joseph Rachita , Vanessa Marika Guscoff , Lawson Gibson Wideman
- Applicant Address: US OH Akron
- Assignee: The Goodyear Tire & Rubber Company
- Current Assignee: The Goodyear Tire & Rubber Company
- Current Assignee Address: US OH Akron
- Agent Alvin T. Rockhill
- Main IPC: C08L83/06
- IPC: C08L83/06

Abstract:
This invention discloses a process for manufacturing an elastomeric article by liquid injection molding, wherein the article has improved tensile strength and improved tear strength, said process comprising the steps of: (I) heating a curable composition comprised of (1) a liquid polymer comprised of repeat units that are derived from a conjugated diolefin monomer, wherein said liquid polymer has a weight average molecular weight which is within the range of 5,000 to 100,000, and wherein the liquid polymer is functionalized with an ether moiety, (2) a carbonyl inhibited platinum catalyst, and (3) a tetrakis(dialkyl siloxy) silane crosslinking agent, to a temperature which is within the range of 30° C. to 100° C.; (II) injecting the heated curable composition into a mold at a temperature which is within the range of 100° C. to 210° C. to produce the elastomeric article; and (III) removing the elastomeric article from the mold. This invention also discloses that the elasticity of such cured elastomeric articles can be increased without reducing cure levels by incorporating a liquid C5 tackifier resin into the liquid polymer.
Public/Granted literature
- US20070032604A1 Liquid polymer Public/Granted day:2007-02-08
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