Patents by Inventor Ian D. H. Towle
Ian D. H. Towle 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).
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Patent number: 5338821Abstract: Benzofuran-ether-sulphone monomers of formula ##STR1## and ether ketone polymers derived therefrom of formula ##STR2##Type: GrantFiled: April 26, 1993Date of Patent: August 16, 1994Assignee: Raychem LimitedInventor: Ian D. H. Towle
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Patent number: 5145938Abstract: An arylene ether ketone copolymer comprising:(a) 99 to 10 mol % of repeat units ##STR1## and (b) 1 to 90 mol % of repeat units --Ar--O--Ar--CO-- (II),wherein each Ar independently is m- or p-phenylene or a di- or poly- m- and/or p-phenylene moiety in which the phenylene rings are linked together by direct bonds or by --O-- or --CO-- groups.Especially preferred are the copolymers wherein ##STR2## and (II) is --Ph--O--Ph--CO--Ph--O--Ph--CO--Ph--CO--, each Ph independently being m- or p-phenylene.Type: GrantFiled: June 29, 1990Date of Patent: September 8, 1992Assignee: Raychem LimitedInventor: Ian D. H. Towle
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Patent number: 5128429Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerise together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.Type: GrantFiled: January 24, 1991Date of Patent: July 7, 1992Assignee: Raychem LimitedInventors: Ian D. H. Towle, Partrick J. Horner
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Patent number: 5041611Abstract: Organic compounds having aromatic ester, thioester, or carbonate groups are prepared by reacting an organometallic reactant where the metal is germanium, tin, lead, gallium, indium, thallium, arsenic, antimony, or bismuth with a suitable second reactant. For example, the ester ##STR1## is prepared by reacting the bis-tri--n-butyl tin derivative of ethyl 4-hydroxybenzoate with 4-phenoxybenzoyl chloride.Type: GrantFiled: May 23, 1989Date of Patent: August 20, 1991Assignee: Raychem LimitedInventor: Ian D. H. Towle
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Patent number: 4999411Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerise together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.Type: GrantFiled: July 25, 1990Date of Patent: March 12, 1991Assignee: Raychem LimitedInventors: Ian D. H. Towle, Patrick J. Horner
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Patent number: 4990589Abstract: Partially crystalline polyaryletherketones having improved glass transition temperature without unacceptably high melting temperature are produced by incorporating multi-ring aryl moieties (e.g. terphenyls of naphthyls) in the polymer backbone and mono-substituting those or other moieties in the backbone, or arranging the aryl multi-ring groups asymmetrically so as to kink the backbone.Type: GrantFiled: November 3, 1988Date of Patent: February 5, 1991Assignee: Raychem LimitedInventors: Ian D. H. Towle, Patrick J. Horner
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Patent number: 4960835Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerise together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.Type: GrantFiled: May 23, 1989Date of Patent: October 2, 1990Assignee: Raychem LimitedInventors: Ian D. H. Towle, Patrick J. Horner
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Patent number: 4898983Abstract: Friedel Crafts preparation of aryl carbonyl compounds having an exceptionally high degree of isomeric purity and freedom from by-products can be achieved by adding to the Lewis acid reaction system a protic controlling agent selected from ROX, water, RCOOX, RSO.sub.3 X, and ROY, wherein R is organic, X is hydrogen or metal, and Y is metal. Contrary to conventional expectation, the protic agent does not significantly alkylate or acylate the Friedel Crafts reaction product.Type: GrantFiled: November 7, 1988Date of Patent: February 6, 1990Assignee: Raychem LimitedInventor: Ian D. H. Towle
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Patent number: 4845179Abstract: A method for the preparation of a variety of engineering polymers and copolymers, in particular aromatic polymers and copolymers which comprises reacting a stannylated reactant containing a first monomeric or polymeric moiety with an electrophilic reactant, usually a di(acid chloride) containing a second monomeric or polymeric moiety. The intermediate and second compound react by way of a condensation reaction to eliminate the tin and polymerize together the first and second moieties. Some novel polymers and copolymers can be prepared using this method.Type: GrantFiled: October 12, 1988Date of Patent: July 4, 1989Assignee: Raychem LimitedInventors: Ian D. H. Towle, Patrick J. Horner
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Patent number: 4841011Abstract: Friedel Crafts preparation of arylene ether (especially arylene ether ketone) oligomers with an exceptionally high degree of isomeric purity and freedom from by-products can be achieved by adding to the Lewis acid reaction system a protic controlling agent selected from ROX, water, RCOOX, RSO.sub.3 X, and ROY, wherein R is organic, X is hydrogen or metal, and Y is metal.Contrary to conventional expectation, the protic agent does not significantly acylate or alkylate the Friedel Crafts reaction product, and controlling agents of relatively low molecular weight, e.g., benzoic acid, can surprisingly be selected to produce dispersions of the resulting oligomers.Type: GrantFiled: September 11, 1987Date of Patent: June 20, 1989Assignee: Raychem LimitedInventor: Ian D. H. Towle
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Patent number: 4841013Abstract: Friedel Crafts preparation of arylene ether ketone polymers with an exceptionally high degree of isomeric purity and freedom from by-products can be achieved by adding to the Lewis acid reaction system a protic controlling agent selected from ROX, water, RCOOX, RSO.sub.3 X, and ROY, wherein R is organic, X is hydrogen or metal, and Y is metal. Contrary to conventional expectation, the protic agent does not significantly acylate or alkylate the polymer, and agents of relatively low molecular weight, e.g. benzoic acid, can be selected to produce dispersions of the resulting polymers. The controlling agent also apparently acts to maintain the polymer in solution until a desired molecular weight is reached.Type: GrantFiled: September 11, 1987Date of Patent: June 20, 1989Assignee: Raychem LimitedInventor: Ian D. H. Towle
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Patent number: 4841094Abstract: Organic compounds having functional groups such as aromatic ester, thioester, or carbonate groups are prepared by reacting an organometallic reactant where the metal is gallium, indium, thallium arsenic, antimony, or bismuth, with a suitable second reactant. For example, the ester ##STR1## can be prepared by reacting an organometallic derivative of hydroquinone with p-phenoxybenzoyl chloride.Type: GrantFiled: July 29, 1988Date of Patent: June 20, 1989Assignee: Raychem LimitedInventor: Ian D. H. Towle
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Patent number: 4820792Abstract: Polyaryletherketones are synthesized by Friedel-Crafts chemistry using a catalytic quantity of a strong acid (e.g. trifluoromethanesulphonic acid) in a solvent of lower acidity preferably comprising a second acid of strength at least equal to chloroacetic acid. Suitable second acids can be recovered for reuse, and only a small (catalytic) amount of the expensive strong acid is required.Type: GrantFiled: April 9, 1987Date of Patent: April 11, 1989Assignee: Raychem LimitedInventor: Ian D. H. Towle
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Patent number: 4777282Abstract: Organic compounds having functional groups such as aromatic ester, thioester, or carbonate groups are prepared by reacting an organo- germanium, tin, or lead reactant with a suitable second reactant. For example, the ester ##STR1## is prepared by reacting the bis-tri-n-butyl tin derivative of hydroquinone with p-phenoxybenzoyl chloride.Type: GrantFiled: June 3, 1986Date of Patent: October 11, 1988Assignee: Raychem LimitedInventor: Ian D. H. Towle