Abstract: A sequential catalysis of the ring opening polymerization of cyclic organosiloxanes using a base catalyst that can be neutralized by a subsequent redistribution and condensation catalyst such as a Lewis acid catalyst, preferably a phosphonitrilic compound, permits the rapid synthesis of functionalized and poly-functionalized silicone copolymers such as alkenyl hydride copolymers, a new composition of matter.
Type:
Grant
Filed:
July 30, 1996
Date of Patent:
December 16, 1997
Assignee:
General Electric Company
Inventors:
Susan A. Nye, Donna A. Riccio, Brenda S. Wutzer
Abstract: Carbonate and hydroxy carbamate functionalized silicones and a process for their preparation are described. Hydroxy carbamate functionalized silicones are useful in personal care and cosmetic compositions.
Abstract: Microemulsion compositions comprising low amino content microemulsifiable silicones and a surfactant having a high phase inversion temperature, the microemulsions formed therewith, a means for preparing said microemulsions, and personal care products comprising said microemulsions.
Type:
Grant
Filed:
May 27, 1994
Date of Patent:
November 4, 1997
Assignee:
General Electric Company
Inventors:
Marianne D. Berthiaume, James H. Merrifield
Abstract: Low viscosity MQ silicone resins as a composition of matter, methods of preparation of same and cosmetic and personal care products comprising said MQ resins.
Type:
Grant
Filed:
April 30, 1996
Date of Patent:
November 4, 1997
Assignee:
General Electric Company
Inventors:
Marianne D. Berthiaume, Peter M. Miranda
Abstract: Secondary contact adhesion or self-bonding in cured liquid injection molding silicone compositions is reduced by the inclusion in the composition of an inhibitor compound selected from the group consisting of phenyl fluids, titanate esters, and silicate esters.
Type:
Grant
Filed:
August 28, 1996
Date of Patent:
October 14, 1997
Assignee:
General Electric Company
Inventors:
Brian J. Ward, Robert A. Smith, Richard A. Striker
Abstract: A room temperature vulcanizable silicone composition having an application rate greater than 150 g/min. and good thixotropy comprises an alkyl alkoxy stopped diorganopolysiloxane, a polyalkoxysilane crosslinking agent, a tetra alkyl titanate condensation cure catalyst, and 1,3,5-tris(alkoxysilylalkyl)isocyanurate.
Abstract: Low molecular weight, high alkenyl content silicone resins of the general formula M.sub.y M.sup.vi.sub.z D.sub.a D.sup.vi.sub.b T.sub.c T.sup.vi.sub.d Q or M.sub.y M.sup.vi.sub.z D.sub.a D.sup.vi.sub.b T.sub.c T.sup.vi.sub.d are disclosed, their use in curable liquid injection molding compositions, a process for varying the cure properties of such compositions and articles of manufacture made thereby and therewith.
Type:
Grant
Filed:
April 9, 1996
Date of Patent:
October 7, 1997
Assignee:
General Electric Company
Inventors:
Philip J. McDermott, Donald S. Johnson, Brian J. Ward, Edward Matthew Jeram
Abstract: A composition for in situ treating silica filler is provided, comprising a silanol-terminated, vinyl-containing polydiorganosiloxane which functions both as a processing aid and as a crosslinking agent in vulcanizable fluorosilicone and silicone elastomer compositions.
Abstract: Carbonate and hydroxy carbamate functionalized silicones and a process for their preparation are described. Hydroxy carbamate functionalized silicones are useful in personal care and cosmetic compositions.
Abstract: A batch or continuous process for the production of low molecular weight hydrogen siloxanes catalyzed by soluble phosphonitrilic halides or solid acid catalysts such as acid washed clays, zeolites and ion exchange resins.
Type:
Grant
Filed:
March 27, 1996
Date of Patent:
September 23, 1997
Assignee:
General Electric Company
Inventors:
John S. Razzano, Patricia P. Anderson, Robert J. Perry
Abstract: Blends of epoxysilicone polymers and vinyl ether monomers or oligomers and an effective amount of a suitable iodonium photocatalyst provide an ultraviolet curable low viscosity silicone coating composition.
Abstract: Methyl- and phenyl-containing fluorosilicone terpolymeric fluids over the range of 30 cps to 200,000 cps are effective as additives for various uses. Over the range of 16,000 to 200,000 cps, the fluids are effective as additives in promoting a finger transferable self-bleed of lubricant in fluorosilicone-containing heat-curable rubber compositions, even after a post-bake of the composition. Over the viscosity range of 30 cps to 1000 cps, the fluids are useful in personal care and cosmetic products as water and oil repellency additives. Methods of ring opening polymerization are used to produce the terpolymeric fluids from cyclic reactants.
Abstract: The present invention relates to an inhibitor package that allows for low temperature cure in thermal solventless paper release products while at the same time maintaining reasonable bulk and thin film bath lives.
Abstract: A personal care composition is provided, composing (A) an effective amount of a polyalkylsiloxane copolymer having a melting point of from about -40.degree. C. to about +40.degree. C., and being selected from various specific polyalkylsiloxane copolymer fluids or polyalkylsiloxane copolymer resins; and (B) a cosmetically acceptable carrier medium, wherein the polyalkylsiloxane copolymer contains mixtures of linear lower alkyl side chains and linear higher alkyl side chains or mixtures of linear alkyl side chains and branched alkyl side chains. The polyalkylsiloxane copolymers used in the composition are fluids or soft waxes at body temperature and have improved application and payout and better substantivity and hair conditioning properties.
Type:
Grant
Filed:
September 29, 1995
Date of Patent:
May 6, 1997
Assignee:
General Electric Company
Inventors:
Raymond J. Thimineur, Frank J. Traver, Virginia M. Van Valkenburgh
Abstract: A novel method for putting silicone onto polycarbonate is disclosed comprising preparing a mixture of a silicone, a polycarbonate and a solvent, heating the mixture to reflux and recovering the solid powdery residue.
Type:
Grant
Filed:
December 12, 1994
Date of Patent:
April 29, 1997
Assignee:
General Electric Company
Inventors:
Michael A. Lucarelli, William J. Raleigh, Kimberlie A. Schryer
Abstract: Control of the surface silanol density in silica fillers used in formulating heat curable rubbers enables control of the percent sealing force retention of the composite. Functionalizing the chemical agents used to effect such control adds additional means of controlling the physical properties of the resulting rubbers, especially silicone rubbers.
Type:
Grant
Filed:
December 1, 1995
Date of Patent:
April 22, 1997
Assignee:
General Electric Company
Inventors:
John J. Fitzgerald, John A. Osaheni, Stanlee T. Buddle, Donald T. Pero
Abstract: A organic solventless two component rapidly curing primer composition comprising a low viscosity dimethylsiloxane oligomer end capped with amino-ethyl-amino-propyl-dimethylsiloxyl and an organotitnate, a process for the manufacture thereof, and a process for the use therewith said primer particularly suited for use with room temperature vulcanizable silicone sealants.
Type:
Grant
Filed:
April 11, 1996
Date of Patent:
April 15, 1997
Assignee:
General Electric Company
Inventors:
Brian P. Bayly, Gary M. Lucas, Van W. Stuart
Abstract: A process for removing contaminating solvents from solutions containing solid solutes comprising contacting a co-solvent that forms an azeotrope with the contaminating solvent forming a mixture thereby and spray drying the contaminating solvent co-solvent mixture in the presence of the co-solvent at a temperature equal to or above the temperature where the azeotrope distills whereby the contaminating solvent has been azeotropically distilled away from the solute. The process is particularly useful for polymeric solutes, especially silicones.
Type:
Grant
Filed:
November 3, 1995
Date of Patent:
April 8, 1997
Assignee:
General Electric Company
Inventors:
Jeffrey H. Wengrovius, Richard W. Green, Clayton B. Quinn