Abstract: Amorphous sulfopolyesters which are the esterification product of glycols and dicarboxylic acids and, optionally, hydroxycarboxylic acids, of which at least about 35 mole percent are ortho-dicarboxylic acids.
Type:
Grant
Filed:
September 30, 1983
Date of Patent:
October 30, 1984
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A two-component system for producing a flowable to plastic synthetic resin composition comprising, as the first component, a combination of a polyisocyanate and an enamine, and the second component comprising a carrier compound having water aggregated thereto.
Type:
Grant
Filed:
June 17, 1983
Date of Patent:
September 4, 1984
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A metal clad laminate of at least about 20 mils dielectric thickness containing a low-loss dielectric soft polymeric material and at least two layers of glass cloth reinforcement, wherein the separation between the metal cladding and the nearest layer of glass cloth is at least about 7 mils of the soft polymeric material.
Type:
Grant
Filed:
July 28, 1981
Date of Patent:
May 29, 1984
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A permanently elastic dielectric composition comprising a resilient dielectric base material, an electrically polarizable component having low electrical conductivity to increase the relative dielectric constant of the composition, and a component displaying metal conductivity for maintenance of the relative dielectric constant at high power frequencies.
Type:
Grant
Filed:
March 2, 1981
Date of Patent:
October 25, 1983
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A light-sensitive adduct comprising the combination of a diazo resin having a plurality of pendant diazonium groups and a sulfonated polymer having a plurality of sulfonate groups and a presensitized light-sensitive article comprising a substrate having a light-sensitive coating which is comprised of the light-sensitive adduct on a surface thereof. After imagewise exposure, unexposed portions of the coating are removable by water or aqueous developers.
Type:
Grant
Filed:
February 3, 1982
Date of Patent:
October 11, 1983
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A light-sensitive adduct comprising the combination of a diazo resin having a plurality of pendant diazonium groups and a sulfonated polymer having a plurality of sulfonate groups and a presensitized light-sensitive article comprising a substrate having a light-sensitive coating which is comprised of the light-sensitive adduct on a surface thereof. After imagewise exposure, unexposed portions of the coating are removable by water or aqueous developers.
Type:
Grant
Filed:
February 3, 1982
Date of Patent:
August 30, 1983
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A process for forming a colloid relief image on a substrate, comprising the steps of: (a) exposing to actinic light a sheet structure comprising a substrate having coated on one surface thereof a first layer comprising a colloid material capable of being tanned when contacted by oxidized silver halide developer, and coated over the first layer a second layer comprising a photographic silver halide emulsion, the emulsion containing substituted gelatin which is substantially resistant to tanning by the oxidized silver halide developers; (b) developing exposed sheet structure with oxidizable silver halide developers; and (c) washing the sheet structure with warm water, whereby all of the second layer is removed together with portions of the first layer which have not been tanned.
Type:
Grant
Filed:
August 13, 1982
Date of Patent:
June 28, 1983
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A mechanical plating process utilizes a chemical promotor system for providing heavy, thick metallic coatings on articles, the system comprising a flash promotor for providing a thin, adherent flash coating on the articles and a continuing promotor for incremental addition together with the finely divided mechanical plating metal to form the heavy, thick coatings.
Type:
Grant
Filed:
June 30, 1982
Date of Patent:
June 21, 1983
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A floating fly fishing line comprising a core member and having a substantially smooth plastic surface coating, the coating containing therein a fluorinated polymer, the polymer being capable of imparting to said plastic coating, when contained therein at a concentration of about 0.25 percent by weight, a contact angle with water in air of greater than about 60.degree., a contact angle with gasoline in air of greater than about 30.degree., and a contact angle with mineral oil in air of greater than about 15.degree..
Type:
Grant
Filed:
September 18, 1981
Date of Patent:
May 31, 1983
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
William A. Dille, Wayne E. Erickson, Leon D. Royer
Abstract: An elastomeric pre-stretched tubular member comprising from about 2.5 to about 25 volume percent carbon black, from about 0.8 to about 3.0 volume percent of platelet-shaped conductive particles, and optionally high permittivity inorganic fillers and platelet-shaped inorganic dielectric fillers, with the balance being the compounded elastomeric component.
Type:
Grant
Filed:
March 2, 1981
Date of Patent:
December 14, 1982
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: An article comprising a substrate having coated on one surface thereof a first layer comprising a colloidal material capable of being tanned when contacted with oxidized silver halide developers, and overyling said first layer a second layer comprising a photographic silver halide emulsion, said emulsion containing substituted gelatin therein, said substituted gelatin being substantially resistant to tanning when contacted by said oxidized silver halide developers.
Type:
Grant
Filed:
May 10, 1978
Date of Patent:
December 14, 1982
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A photolithographic sheet capable of forming a lithographic printing plate upon imaging via silver salt diffusion transfer comprising a support, a silver halide emulsion, and a receptor layer overlying the emulsion, the receptor layer comprising a high molecular weight hydrophilic polymer and catalytic nuclei for silver salt diffusion transfer development, the major proportion of the polymer being a dialdehyde polysaccharide.
Type:
Grant
Filed:
June 19, 1981
Date of Patent:
November 30, 1982
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A process for curing a film of polyamic acid or a salt thereof to the corresponding polyimide comprising exposing the film to ultraviolet radiation for a sufficient time and at a sufficient intensity to cure same. The film can be selectively exposed in an imagewise fashion through an appropriate mask followed by developing to remove unexposed areas.
Type:
Grant
Filed:
February 11, 1980
Date of Patent:
May 25, 1982
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A photolithographic receptor sheet for silver diffusion transfer imaging comprising a support with a hydrophilic layer thereon consisting essentially of colloidal silica and a defined dry hydrophilic powder, and a catalytic silver precipitating nuclei layer thereover. The imaged construction is useful as a lithographic printing plate.
Type:
Grant
Filed:
January 21, 1981
Date of Patent:
May 18, 1982
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A presensitized light sensitive sheet structure suitable for producing a dry transfer element, comprising a transparent substrate having a release coating thereon, and overlying the release coating a photo-sensitive layer comprising a conventional photopolymerizable compound, an initiator therefor, and a binder. After light exposure to an original through the transparent substrate and development to remove unexposed portions, the remaining image portions have a greater adhesion for a receptor surface when applied thereto under pressure than the adhesion of the indicia to the transparent substrate under like pressure.
Type:
Grant
Filed:
September 10, 1980
Date of Patent:
January 12, 1982
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: An organic polyurethane resin capable of water and aqueous organic solvent redispersibility comprising the reaction product of at least one hydrophilic diol, at least one hydrophobic diol, at least one organic diisocyanate and, optionally, at least one chain extender.
Type:
Grant
Filed:
April 30, 1980
Date of Patent:
December 22, 1981
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: Photolithographic receptor sheet comprising a support having an anchor layer thereon comprising rutile crystalline titanium dioxide having an oxide surface treatment of at least about 10 percent by weight, the major proportion of which is the oxide of silica, and a layer of hydrophilic colloidal silica overlying said anchor layer.
Type:
Grant
Filed:
October 15, 1980
Date of Patent:
October 6, 1981
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: An acidic electroplating bath containing, as a surfactant, a compound of the formula:R--Ar--O--(C.sub.3 H.sub.6 O).sub.n --(C.sub.2 H.sub.4 O).sub.m --Hwherein R is at least one halide, aldehyde, amine, carboxyl, ketone or mixture thereof, Ar is benzene or naphthalene, n is from zero to 10, m is from zero to 100, and m+n is greater than zero.
Type:
Grant
Filed:
June 7, 1979
Date of Patent:
June 2, 1981
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A presensitized light sensitive sheet structure suitable for producing a dry transfer element, comprising a transparent substrate having a release coating thereon, and overlying the release coating a photo-sensitive layer comprising a conventional photopolymerizable compound, an initiator therefor, and a binder. After light exposure to an original through the transparent substrate and development to remove unexposed portions, the remaining image portions have a greater adhesion for a receptor surface when applied thereto under pressure than the adhesion of the indicia to the transparent substrate under like pressure.
Type:
Grant
Filed:
April 26, 1979
Date of Patent:
April 14, 1981
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A flowable, pressure-fixable, magnetic, dry toner powder comprising from about 25 to about 70 percent by weight of a binder material, said binder material comprising a mixture of a polystyrene and a polyolefin/vinyl acetate copolymer, from about 30 to about 75 percent by weight of a magnetically permeable material, and from about 0.5 to about 2.0 percent by weight of conductive carbon.
Type:
Grant
Filed:
June 25, 1979
Date of Patent:
April 14, 1981
Assignee:
Minnesota Mining and Manufacturing Company