Patents by Inventor Iain A MacKinnon
Iain A MacKinnon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8592545Abstract: A polyorganosiloxane polyoxyalkylene block copolymer having one or more polyorganosiloxane blocks and one or more polyoxyalkylene blocks linked to each other via divalent radicals which comprises at least two silicon-bonded alkoxy groups, preferably of the form PS (A PO)m (A PS)n, wherein PO is a polyoxyalkylene block, PS represents a polyorganosiloxane block, A is a divalent radical, m and n have independently a value of at least 1, comprising at least one alkoxy-substituted siloxane unit of the formula (R?)q(OR)—SiO3?q/2 ?, wherein R represents an alkyl group having 1 to 4 carbon atoms and each R? represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, or an alkoxy group of the formula —OR and q has a value of 0, 1 or 2, provided at least two silicon-bonded groups OR are present in the block copolymer.Type: GrantFiled: April 30, 2008Date of Patent: November 26, 2013Assignee: Dow Corning CorporationInventors: Iain A. Mackinnon, Sarah O'Hare, Francois De Buyl, Geraldine Durand
-
Patent number: 8481640Abstract: The invention relates to a water-insoluble hydrophilic polymer network comprising polyorganosiloxane polyoxyalkylene block copolymer moieties characterized that they are linked to each other through an organosilicon cross-linking moiety, provided that the cross-linking moiety forming the links between polyorganosiloxane polyoxyalkylene block copolymer moieties result from an addition reaction between cross-linking sites present on the polyorganosiloxane polyoxyalkylene block copolymer moieties prior to formation of the hydrophilic polymer network, selected from silicon-bonded hydrogen atoms and aliphatically unsaturated groups, and reactive groups present on the cross-linking moiety prior to formation of the hydrophilic polymer network. Also disclosed is a process for making the polymer network, and a curable composition able to be reacted into such polymer network.Type: GrantFiled: April 30, 2008Date of Patent: July 9, 2013Assignee: Dow Corning CorporationInventors: Helen L. Gough, Iain A. MacKinnon, Sarah O'Hare, Geraldine Durand
-
Patent number: 7781505Abstract: A process for stabilising the viscosity of an amino-functional siloxane polymer comprises adding a dialkoxydialkylsilane to the amino-functional siloxane polymer or to the reagents from which the amino-functional siloxane polymer is produced.Type: GrantFiled: June 17, 2005Date of Patent: August 24, 2010Assignee: Dow Corning CorporationInventors: Leon Cook, Sue Strange, Iain Mackinnon, Sarah O'Hare
-
Publication number: 20100168309Abstract: A polyorganosiloxane polyoxyalkylene block copolymer having one or more polyorganosiloxane blocks and one or more polyoxyalkylene blocks linked to each other via divalent radicals which comprises at least two silicon-bonded alkoxy groups, cc preferably of the form PS (A PO)m(A PS)n, wherein PO is a polyoxyalkylene block, PS represents a polyorganosiloxane block, A is a divalent radical, m and n have independently a value of at least 1, comprising at least one alkoxy-substituted siloxane unit of the formula (R?)q(OR)—SiO3-q/2, wherein R represents an alkyl group having 1 to 4 carbon atoms and each R? represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, or an alkoxy group of the formula —OR and q has a value of 0, 1 or 2, provided at least two silicon-bonded groups OR are present in the block copolymer.Type: ApplicationFiled: April 30, 2008Publication date: July 1, 2010Inventors: Iain A. Mackinnon, Sarah O'Hare, Francois De Buyl, Geraldine Durand
-
Publication number: 20100168325Abstract: The invention relates to a water-insoluble hydrophilic polymer network comprising polyorganosiloxane polyoxyalkylene block copolymer moieties characterised that they are linked to each other through an organosilicon cross-linking moiety, provided that the cross-linking moiety forming the links between polyorganosiloxane polyoxyalkylene block copolymer moieties result from an addition reaction between cross-linking sites present on the polyorganosiloxane polyoxyalkylene block copolymer moieties prior to formation of the hydrophilic polymer network, selected from silicon-bonded hydrogen atoms and aliphatically unsaturated groups, and reactive groups present on the cross-linking moiety prior to formation of the hydrophilic polymer network. Also disclosed is a process for making the polymer network, and a curable composition able to be reacted into such polymer network.Type: ApplicationFiled: April 30, 2008Publication date: July 1, 2010Inventors: Helen L. Gough, Iain A. Mackinnon, Sarah O'Hare, Geraldine Durand
-
Publication number: 20070299178Abstract: A process for stabilising the viscosity of an amino-functional siloxane polymer comprises adding a dialkoxydialkylsilane to the amino-functional siloxane polymer or to the reagents from which the amino-functional siloxane polymer is produced.Type: ApplicationFiled: June 17, 2005Publication date: December 27, 2007Applicant: DOW CORNING CORPORATIONInventors: Leon Cook, Sue Strange, Iain Mackinnon, Sarah O'Hare
-
Patent number: 6780471Abstract: A curable silicone resin composition comprises (A) an uncured silicone resin having units of the formula (R*)a(R)bSiO(4−a−b)/2, where each R* is a functional group capable of reacting with Si—OH and/or Si-alkoxy groups and each R is a nonfunctional monovalent hydrocarbon group, a+b is from 1.0 to 3.0 and each molecule of uncured silicone resin contains an average of at least two groups R*, and (B) a silanol or hydrolysable compound of the formula (I) where R′ represents a hydroxyl group or a hydrolysable group; each R″ represents hydrogen, a monovalent hydrocarbon which optionally is substituted, or a group within the above definition of R′; and Ar is a substantially nonflexible linkage including at least one para-arylene moiety, so that the groups (R′)2R″Si— are spatially separated.Type: GrantFiled: December 13, 2002Date of Patent: August 24, 2004Assignee: Dow Corning CorporationInventors: Pierre Chevalier, Iain A MacKinnon, Bizhong Zhu, Robert Jean-Pierre Corriu, Genevieve Marie-Louise Emile Cerveau, Bertrand Francois Dabiens
-
Patent number: 5925779Abstract: A method for preparing an aminoalkoxysiloxane comprises reacting a siloxane having at least one Si--X bond with an aminoalcohol of the general formula HO--R--NR.sup.1.sub.2 and removing HX from the reaction mixture, wherein X is a hydrogen atom, an --OH group or an --OC(O)NR.sup.1.sub.2 group, R is a divalent substituted or unsubstituted alkylene or arylene group, and R.sup.1 is a hydrogen atom or an alkyl group having from one to eighteen carbon atoms. The siloxane and aminoalcohol are preferably HO(Me.sub.2 SiO).sub.4.5 H and ethanolamine, (Me.sub.3 SiO).sub.2 MeSiH and ethanolamine, isopropanolamine or 3-aminopropan-1-ol, or Me.sub.3 SiO(Me.sub.2 SiO).sub.3 (MeHSiO).sub.5 SiMe.sub.3 and isopropanolamine respectively. The aminoalkoxysiloxanes thus prepared are useful for treating textile fabrics.Type: GrantFiled: June 22, 1998Date of Patent: July 20, 1999Assignee: Dow Corning, Ltd.Inventors: Stephen E. Cray, Helen L. Gough, Iain A. MacKinnon