Alkyl group-substituted organopolysiloxane gels

#1. Field of the Invention

#The present invention pertains to oleaginous alkyl group-substituted silicone gels, processes for their preparation, and use thereof.

#2. Background Art

#A series of gels were produced employing Procedures A, B, and C. The materials used, their amounts, and the properties of the gels produced are reproduced in Tables 1 and 2 below. Example C7 is a Comparative Example employing no unsaturated alkene. 1 TABLE 1 ALKYL ELASTOMER GEL FORMULATIONS Example: 1 2 3 4 5 6 Oleaginous Component1 74.9 74.9 69.9 69.9 69.9 67 Unsaturated Organopolysiloxane 16.96 15.96 15.56 15.76 15.96 13.73 Resin (% wt)2 Si-H Functional Crosslinker3 2.99 3.99 4.39 4.19 3.99 13.73 1-octadecene 5 5 10 10 10 5.5 Catalyst OL4 0.0500 0.0500 0.0500 0.0500 0.0500 0.0500 F950A5 0.10 0.10 0.10 0.10 0.10 0 Batch Size (g) 450 3700 450 450 450 450 Initial % H 0.0152 0.0203 0.0224 0.0214 0.0203 0.07 Mol Alkyl Vi/mol H 1.30 0.91 1.65 1.73 1.82 0.29 Mol Resin Vi/mol H 0.74 0.53 0.47 0.49 0.53 0.13 Viscosity (cP) 92000 504000 284000 190,000,000 101000 — Characteristics slimy gel pasty creamy thick slime stringy soft6 powder % H (final) 0.0038 0.0050 0.011 0.0018 0.0028 0.037 Procedure Used (A, B, or C) A A A A A C 1CM040, volatile cyclic dimethylsiloxane available from Wacker Silicones, Adrian, MI; 2MQ resin 804, Wacker Silicones; 3EL Crosslinker 525, Wacker Silicones; 4Platinum hydrosilylation catalyst, Wacker Silicones; 5mercaptopropyl silsesquioxane; 62x through a 3-roll mill.

#2 TABLE 2 ALKYL ELASTOMER GEL FORMULATIONS Example: C7 7 8 9 10 11 12 Oleaginous Component1 78.7 70.0 73.0 70.4 67.0 67.0 67.0 Unsaturated Organopolysiloxane 15.3 9.77 12.57 14.02 10.22 10.22 13.74 Resin (% wt)2 Si-H Functional Crosslinker3 5.9 13.49 8.38 9.83 15.73 15.73 5.50 1-octadecene 0 6.7 6 5.7 7 7 13.74 Catalyst OL4 0.0544 0.0500 0.0500 0.0500 0.0500 0.0500 0.0300 F950A5 — 0 0 — — — — Batch Size (g) 423 450 450 450 450 450 3700 Initial % H 0.0301 0.0688 0.0427 0.0501 0.0802 0.0802 0.0700 Mol Alkyl Vi/mol H 0 0.36 0.52 0.42 0.32 0.32 0.29 Mol Resin Vi/mol H 0.34 0.10 0.20 0.19 0.09 0.09 0.13 Viscosity (cP) — low 650 — — — — Characteristics chunky, separated powder6 powder6 soft powder6 soft powder6 soft powder6 soft powder6 % H (final) — 0.035 0.009 0.028 0.047 0.051 0.046 Procedure Used (A, B, or C) A C C B B C B 1CM040, volatile cyclic dimethylsiloxane available from Wacker Silicones, Adrian, MI; 2MQ resin 804, Wacker Silicones; 3EL Crosslinker 525, Wacker Silicones; 4Platinum hydrosilylation catalyst, Wacker Silicones; 5mercaptopropyl silsesquioxane; 62x through a 3-roll mill.

#An unsaturated amide was prepared by mixing 80 g hexamethylenediamine, 43 g water, and 50 g octanoic acid, heating to 225° C., and holding for 2 hours in a glass reactor fitted with a trap. The reactor was allowed to cool, and the trap emptied. The reactor was heated to 220° C. under vacuum to remove unreacted hexamethylenediamine, cooled, and the trap again emptied. 93 g undecyclenic acid was added and the reactor heated to 225° C. for 2 hours. The trap was again emptied, and the reactor heated to 225° C. under vacuum for 2 hours to remove excess acid. The product is the undecyclenic acid/octanoic acid diamide of hexamethylenediamine.