C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
18/1166, 400/530
C08L 83/04 (2006.01) C08J 3/24 (2006.01) C08K 9/10 (2006.01)
Patent
CA 1257729
PROCESS AND COMPOSITION FOR THE MANUFACTURE OF PRODUCTS FROM SILICONE RUBBER ABSTRACT OF THE DISCLOSURE A process is disclosed for the manufacture of products from silicone rubber stock which includes form- ing a mixture of silicone rubber components, such as silicone monomers, oligomers, or polymers, microcapsules containing a cross-linking agent for silicone rubber com- ponents and, optionally, one or more additives. The cross-linking agent is maintained in microcapsules iso- lated from the silicone rubber components until a prede- termined temperature and pressure are reached. The mix- ture is flowed into a mold cavity under heat and pressure prior to any significant cross-linking agent-induced cross-linking during a first portion of the molding cycle. During a second portion of the molding cycle, the cross-linking agent is released to effect substantially all cross-linking agent-induced cross-linking. The cured mixture is removed from the mold cavity to provide a silicone rubber product.
479817
Dougherty Michael J.
Macrae & Co.
Mcdougal John R.
LandOfFree
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