|
Match
|
Document |
Document Title |
|
|
4705809 |
Process for preparing a porous polymer article
A porous polymer article for use as a filter medium or battery separator is prepared by admixing a cellulosic compound and a thermoplastic polymer, both usually in powder form, forming the article...
|
|
|
4677135 |
Method of preparing urea adsorbent
A urea adsorbent and a method for its production are disclosed, the adsorbent comprising hollow microspheres each having an outer layer formed of a urea-permeable polymer and an inner layer formed...
|
|
|
4666961 |
Co-continuous dispersions of incompatible polymers in polymer matrices
A method of making and composition for a co-continuous dispersion of incompatible polymers in a polymer matrix comprises forming a solution of the incompatible polymers in a solvent which is common...
|
|
|
4661530 |
Biocompatible, antithrombogenic materials suitable for reconstructive surgery
Biocompatible, highly antithrombogenic material for reconstructive surgery, which is based on poly (L-lactic acid) and or poly (dL-lactic acid) and segmented polyester and urethanes or polyether...
|
|
|
4661526 |
Cross linked porous membranes
A polymeric porous membrane having a matrix made from an aliphatic thermoplastic polyamide or from an aliphatic thermoplastic polyamide/polyimide copolymer which has both relatively non-crystalline...
|
|
|
4629744 |
Method for producing a response membrane for use in a chloride ion selective electrode
A composition for use in a chloride ion electrode is provided herein. This composition is made up of a mixture of an epoxy resin, a vinyl chloride resin, one or more solvents, a quaternary ammonium...
|
|
|
4595707 |
Membranes comprising microporous structure
Membrane compositions useful in filtration and distillation applications are prepared by providing a glassy polymer composition (e.g., polystyrene) optionally having an amount of crosslinking and...
|
|
|
4594371 |
Fine particle dispersions of incompatible polymers in polymer matrices
A method of making and composition for a fine particle dispersion of incompatible polymers in a polymer matrix comprises forming a solution of the incompatible polymers in a solvent which is common...
|
|
|
4536521 |
Porous cross-linked absorbent polymeric materials
Porous, cross-linked polymeric materials comprising hydrocarbon residues can be sulphonated to produce sulphonated polymers which are able to absorb large volumes of ionic solutions and also act as...
|
|
|
4524155 |
Open-cell/microporous molded article
The present invention relates to molded articles of an open-cell structure, containing a copolymer which is comprised of copolymerized, fluorinated olefin, copolymerized vinyl acetate and...
|
|
|
4522953 |
Low density porous cross-linked polymeric materials and their preparation and use as carriers for included liquids
Cross-linked homogenous porous polymeric materials are prepared by polymerization of monomers as the continuous phase in a high internal phase emulsion having above a critical limit of surfactant...
|
|
|
4489174 |
Vesiculated beads
Vesiculated beads having improved scattering efficiency and resistance to shrinkage are prepared by a process which comprises: (a) forming in the presence of a polyamine, as a water-in-oil...
|
|
|
4483945 |
Process of preparing vesiculated polyester granules
A process of preparing aqueous slurries of vesiculated granules of crosslinked polyester resin wherein the granules have a maximum shrinkage on drying of 5% of the granule diameter. The formation...
|
|
|
4477598 |
High strength nylon blend membranes
A casting solution of two nylons in formic acid, e.g., high molecular weight extrusion grade Nylon 66 homopolymer [η] about 2 or higher, and nylon multipolymer 66, 610, 6 as a strengthening...
|
|
|
4454198 |
Porous, powdery polypropylene
Porous, powdery polypropylene is disclosed, obtained by providing a hot solution of polypropylene in pentaerythrol ester as solvent, slowly cooling said solution down to approximately room...
|
|
|
4399237 |
Vesiculated polymer granules containing TiO.sub.2
Vesiculated polymer granules having high refractive indices can be made from an aqueous slurry of particulate TiO 2 if the slurry contains a phosphate ester.
|
|
|
4398003 |
Process for preparing thermoset polymer spheres
A process for preparing thermoset polymer spheres by polymerizing a thermosettable polymer such as a vinyl ester resin or an unsaturated polyester resin in water containing a suspending agent in...
|
|
|
4384047 |
Porous vinylidene fluoride polymer membrane and process for its preparation
Vinylidene fluoride polymer ultrafiltration membranes are prepared by casting a sheet of said polymer dissolved in a mixture of a specified solvent and a specified non-solvent, on a smooth...
|
|
|
4321332 |
Polyester resin granules and process
This invention relates to a process of preparing aqueous slurries of vesiculated granules of crosslinked polyester resin wherein the granules have a maximum shrinkage on drying of 5% of the granule...
|
|
|
4281068 |
Aqueous polyester emulsions for the production of open-pore coatings
Aqueous emulsions of unsaturated polyester resins comprising two "air-drying" polyesters, one polyester containing co-condensed polyalkylene glycol residues and the other polyester being free from...
|
|
|
4238571 |
Process for producing porous materials
A process for preparing a porous material having a fine pore size which comprises preparing a solution comprising resin comprising a vinylidene fluoride/tetrafluoroethylene copolymer, a vinylidene...
|
|
|
4237083 |
Process of manufacturing a microporous sheet material
A process of manufacturing a microporous sheet by forming a blend of a polyolefin, silica and a water insoluble plasticizer, forming a sheet from the blend, and contacting the sheet with water for...
|
|
|
4226926 |
Flexible, microporous rubber base articles
As an article of manufacture, a microporous flexible shape or sheet of a sulfur-free, cured polymeric material of a curable rubber, an ethylene-propylene copolymer or mixtures of the curable rubber...
|
|
|
4220543 |
Ethylene-vinyl alcohol membranes having improved properties and a method of producing the same
A membrane made of a composition containing essentially two kinds of ethylene-vinyl alcohol copolymers with different ethylene unit contents and the membrane has such a microstructure that there...
|
|
|
4172929 |
Plated polyphenylene ether resin compositions containing EPDM rubber-modified alkenyl aromatic resins and hydrogenated elastomeric block copolymers
Novel plated compositions are disclosed which include a polyphenylene ether resin, a small-particle EPDM rubber-modified alkenyl aromatic resin, and a hydrogenated A-B-A block polymer. Also...
|
|
|
4166889 |
Sheet material with improved dyeability
A sheet material with improved dyeability comprises a polyurethane resin obtained by reacting an organic diisocyanate with a polymer polyol and if necessary together with a chain extender.
|
|
|
4137380 |
Polyester granules and process
Aqueous slurries of vesiculated cross-linked polyester resin granules which show a shrinkage of less than 5% on drying are prepared by a double-emulsion process in the presence of polyamine having...
|
|
|
4137360 |
Microporous sheets and a process for making them
A method is provided for making microporous, vapor-permeable polyurethane sheets by coagulating a polyurethane in a polar solvent with a non-solvent for the polyurethane, wherein a polyurethane...
|
|
|
4119581 |
Membrane consisting of polyquaternary amine ion exchange polymer network interpenetrating the chains of thermoplastic matrix polymer
An ion-exchange membrane is formed from a solution containing dissolved matrix polymer and a set of monomers which are capable of reacting to form a polyquaternary ion-exchange material; for...
|
|
|
4116892 |
Process for stretching incremental portions of an orientable thermoplastic substrate and product thereof
There is disclosed a novel process and product produced thereby for the selective stretching of incremental portions of a substrate of a synthetic thermoplastic material selected from the group...
|
|
|
4109066 |
Polyacrylic acid membranes for electrochemical use
The invention relates to a semi-permeable membrane for a lead-acid battery. The membrane has a microporous structure comprising a first polymer and a second polymer intimately mixed together, and...
|
|
|
4105616 |
Heterocyclic polymer solutions and products therefrom
New solvents have been found for certain poly(parabanic acids) and poly(iminoimidazolidinediones). Epihalohydrins and glycidyl acrylate have been found to be solvents. Cellular films are produced...
|
|
|
4104209 |
Highly porous ion exchange resins prepared by suspension polymerization in the presence of linear polymer
A process for the preparation of an ion exchange resin of higher porosity and purity is described. The porosity is achieved by inserting polar, preferably hydrolyzable linear polymer into the...
|
|
|
4096099 |
Porous synthetic resin film
A porous synthetic resin film which comprises fine cylindrical holes of from 70 to 2,000 A in diameter which are formed by removing the fine cylindrical component of an AB-type or an ABA-type block...
|
|
|
4089834 |
Water-resistant micro-capsular opacifier system and products
Microcapsules having controlled structural integrity are produced by a process which involves admixing a thermosetting condensation polymer-containing oily solution and a polymer-containing aqueous...
|
|
|
4088616 |
Method of production of a sheet material having a superior durability and a sponge structure
In accordance with the present invention, it has now been found that the coagulation property of polyurethane elastomers can be considerably improved without spoiling any desirable chemical...
|
|
|
4087396 |
Method for producing the hydrophilic filler for plastics
A mixture of monomers, at least one of which contains 1 or 2 --COOH groups and the other one of which contains more than 1 vinyl group in the molecule, is polymerized by means of radical...
|
|
|
4083906 |
Process for the manufacture of open-pore shaped articles of polyvinyl alcohol-acetal sponge
Starch products which were hitherto used as pore-forming substances in the manufacture of polyvinyl alcohol acetal sponges are replaced by polyethylene glycol or polyacrylamide. This results in a...
|
|
|
4064294 |
In-situ production of microcapsules on a substrate
Microcapsules are produced in-situ in a film or during the manufacturing process of a water-based coating composition from which the film is formed. A principal process involves the in-situ...
|
|
|
4053546 |
Method of making a leather-like sheet material by coagulating two polymers
Method of making a leather-like sheet material having a low bounce impact elasticity, which comprises: (a) mixing (i) a solvent solution of a polymer (A) consisting mainly of an elastomer and (ii)...
|
|
|
4046843 |
Process for preparing membranes for separation of substances
A semipermeable membrane is obtained by casting a cast solution comprising a mixture of a water-insoluble high polymer and a water-soluble high polymer, a mixture of a water-insoluble high polymer...
|
|
|
4035317 |
Rapidly dissolving, water-soluble polymers and spray drying method for their production
A free-flowing particle mixture of a water-soluble polymer wherein the particles are (1) no smaller than about 325 mesh, (2) at least 50% thereof are larger than about 120 mesh and (3) none are...
|
|
|
4012342 |
Catalyst-containing fibers and the polymerization of olefins thereon
The invention relates to polymerizing olefins in the presence of organic fibers and then removing the fibers to obtain hollow polyolefin resins.
|
|
|
3993618 |
Coatings for fibrous sheet material of polyurethane and oil-like hydrocarbon polymer
This invention relates to a coating composition which is a mixture of an elastomeric material and a homopolymeric material alone or in admixture with a copolymeric material, the coating having good...
|
|
|
3992495 |
Method of manufacturing a semipermeable membrane from a water-soluble polymeric resin
Ultrathin membranes for separating substances are obtained by exposing shaped articles comprising a water-soluble polymer or a mixture of a water-soluble polymer and water-insoluble polymer to a...
|
|
|
3981949 |
Method of forming a cellular article having an integral, color-intensity varied decorative pattern on its surface
An article, such as a door, is made from a colored water-extended thermoplastic polymeric material, and is provided with a decorated pattern by fusion of a surface layer to form a non-cellular...
|
|
|
3975348 |
Water-extended polyesteramide resins and methods for their production
Water-extended polyesteramides are produced by forming a water-in-oil emulsion of the polyesteramide and thereafter curing the polyesteramide emulsion. When halogen-containing polyesteramides are...
|
|
|
3948823 |
METHOD OF MAKING PERMSELECTIVE INTERPOLYMER MEMBRANES
Novel cross-linked interpolymer membranes of substantially improved efficiency and durability are prepared from a co-mixture of a hydrophilic polymer of [1,...
|
|
|
3933579 |
Vesiculated polymer granules
The invention relates to vesiculated polymer granules having a plurality of discrete internal vesicles whose walls are provided by said polymer, said granules having a mean diameter of 1-500...
|
|
|
3929685 |
Process for producing casting molds suitable for use in the ceramic industry
A process for producing casting molds suitable for use in the ceramic industry and consisting of a polymerized material having minute, open pores and possessing a high degree of mechanical strength...
|