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7262237 |
Time released curing system
Curable urea formaldehyde binder compositions are provided which are useful in coated abrasive and wood engineering applications, in a time released fashion. The time released curable binder...
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5929195 |
Process for producing branched or crosslinked polyacetal resin
A branched or crosslinked polyacetal resin is excellent in blow moldability, has impact resistances such as plane impact resistance, and the smoothness of the inner surfaces of moldings produced...
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5770678 |
Polymerization of, and depolymerization to, cyclic ethers using selected metal compound catalysts
A process for polymerizing oxiranes, oxetanes, oxepanes, dioxolanes, trioxanes, and tetrahydrofurans to their respective polymers by contacting them with a selected metal compound is disclosed; and...
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5641853 |
Polymerization of cyclic ethers using selected metal compound catalysts
A process for polymerizing oxepanes, dioxolanes, trioxanes, and tetrahydrofurans to their respective polymers by contacting them with a selected metal compound and an accelerator which is a...
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5512652 |
Fluorinated aldehyde containing polymers
Fluorinated aldehydes are made by reacting a fluorinated acyl chloride with a silicon hydride in the presence of palladium. Also disclosed are fluorinated ether aldehydes and their polymers, a...
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5434236 |
Photodegradable polyesters
This invention relates to a polyester comprising repeating units having the structure: ##STR1## wherein R1 is selected from the group consisting of hydrogen, alkyl having 1 to 6 carbon atoms and...
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5288840 |
Polyoxymethylene copolymer and process for producing the copolymer
A polyoxymethylene copolymer excellent in stability and mechanical properties which is comprised of oxymethylene units and oxyalkylene units and has a molecular weight of 10,000 to 200,000. The...
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5124417 |
Initiators for cationic polymerization
Disclosed are novel compounds which are useful as initiators for cationically polymerizable monomers. The novel compounds comprise a carbon containing cation (e.g., trimethyloxonium) which is...
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4839407 |
Particulate polyacetal carboxylate and methods for preparation thereof
A method for preparation of solid particulate polyacetal carboxylate. The method comprises agglomerating a solution comprising less than about 1% by weight methanol and between about 30% by weight...
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4764585 |
Cationic polycondensates useful for improving the fastness of dyeings on textiles
Cationic fixing agents based on the reaction products of (a) a monofunctional or polyfunctional amine having one or more primary and/or secondary and/or tertiary amino groups and (b) cyanamide,...
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4547565 |
Method for manufacturing trioxane copolymer
A trioxane copolymer is manufactured by adding to trioxane and a co-monomer, 0.0001 to 2.0 percent by weight, based on the total weight of the monomers, of one or more sterically hindered phenols,...
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4525573 |
Thermoset polymers and prepolymers obtained by polycondensation of alkyl pyridine with hydroxyl aromatic monoaldehydes
The object of the invention are new thermoset polymers and prepolymers, a process for their preparation, and their uses. The new thermoset prepolymers consist, at least in part, of the...
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4399272 |
Process for producing polyacetal copolymers
A process for producing a polyacetal copolymer, which comprises copolymerizing formaldehyde and a compound selected from the group consisting of alkylene oxides, poly(alkylene oxides), cyclic...
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4377667 |
Polyacetal and process of producing same
A polyacetal suitable for moldings which are excellent in lubricity, wear and antistatic properties, which has at least one terminal of its linear polymer molecule capped with an alkylene oxide...
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4352922 |
Method of producing an improved poly-(amide-imide) resin by reacting a phenanthrene with formaldehyde followed by oxidizing to produce a polycarboxylated product followed by reaction with an aromatic diamine
According to the present invention, there is provided an improved method of producing a poly-(amide-imide) resin comprising the steps of: (1) reacting a phenanthrene with formaldehyde or a...
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4332930 |
Process for polymerizing formaldehyde
Undesirable deposition of polyoxymethylene onto the inner wall of a polymerization vessel and onto a stirrer, which deposition is observed in the slurry polymerization of formaldehyde carried out...
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4259473 |
Process for making self-curing or curable materials from coal hydrogenation distillate residues
Self-curing or curable materials are obtained from the distillation residues of coal hydrogenation by condensing a residue of this type having a softening point of 30° to 54° C. in a first stage w...
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4246396 |
Process for producing polyoxymethylene
Polyoxymethylene having high molecular weight and high thermal stability is produced by polymerizing formaldehyde in the presence of a specific catalyst and then heating the resulting...
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4225685 |
Preparation of polymeric acetal carboxylates using organoaluminum compounds
The alkali metal, ammonium and alkanol ammonium salts of polymeric acetal carboxylates are stable detergent builders under laundry use conditions but depolymerize in mildly acidic media, making the...
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4158729 |
Process for producing polyoxymethylene
Polyoxymethylene is produced by polymerizing formaldehyde in the presence of a catalyst comprising a catalytic component of an organoaluminum compound or a complex thereof supported on a modifier...
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4075175 |
Preparation of photosensitive polyaldehydes
Preparation of photosensitive polyaldehydes which have the formula: ##STR1## WHEREIN R is a photosensitive end group selected from ##STR2## R1 is H or n-alkyl of 1-5 carbon atoms, preferably H, R2...
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4071668 |
Aluminum containing alkenylbenzene resin
Aluminum-containing resins are produced by reactively contacting resin-forming monomers in the presence of aluminum metal which has been activated by permeation of high purity aluminum with...
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3839290 |
METHOD FOR PREPARING HIGH-MOLECULAR POLYOXYMETHYLENE
A method for preparing high-molecular polyoxymethylene whereby monocrystalline trioxane is polymerized by shock compression. The high-molecular polyoxymethylene thus obtained has a high molecular...
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3819583 |
METHOD OF PREPARING FERROCENE POLYMERS
The present invention provides a method of preparing ferrocene polymers which comprises reacting ferrocene with aldehydes or ketones in the presence of a Lewis acid catalyst and an aprotic, polar...
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3673156 |
COPOLYMERS OF CARBON MONOXIDE WITH CARBONYL COMPOUNDS AND PROCESS FOR THEIR PREPARATION
Copolymers of carbon monoxide with carbonylic compounds having all of the groups and a process for making these copolymers which involves reacting under anhydrous conditions, carbon monoxide and...
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3544521 |
PROCESS OF PREPARING OXYMETHYLENE COPOLYMERS
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3526604 |
POLYMERIZATION OF UNSATURATED MONOMERS WITH CATALYSTS FORMED FROM THE REACTION OF METALS AND DERIVATIVES OF GROUPS I-A AND II-A WITH COMPOUNDS OF GROUP III-A
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3523922 |
PROCESS FOR THE PRODUCTION OF POLYALDEHYDES
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3513223 |
PHENOL-FORMALDEHYDE RESINS IN NEEDLE FORM
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3639347 |
PROCESS FOR THE PREPARATION OF HIGH MOLECULAR WEIGHT POLYOXY-METHYLENE
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3839438 |
DERIVATIVES OF THIA-BISALDEHYDES
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3803094 |
PROCESS FOR PRODUCING FORMALDEHYDE COPOLYMER
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3655586 |
COPOLYMERS OF CYCLIC PHOSPHATES AND EPOXIDES OR ALDEHYDES
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3458483 |
PRODUCTION OF HIGH MOLECULAR WEIGHT MATERIALS
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3457226 |
PROCESS FOR PRODUCING POLYOXYMETHYLENES
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3454614 |
METHODS OF MANUFACTURING ALKALI DIALKYLALUMINATES
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3454615 |
ASYMMETRIC DIALUMINOXANE DERIVATIVES AND THEIR PREPARATION
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3448083 |
PRODUCTION OF HIGH MOLECULAR WEIGHT ACETALDEHYDE FORMALDEHYDE POLYMERS
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3446776 |
PROCESS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYMER OF FORMALDEHYDE
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3432471 |
POLYOXYMETHYLENE-NORBORNYLENE COPOLYMERS
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3422074 |
METHOD FOR THE PRODUCTION OF TRIOXANE COPOLYMER CONTAINING NITROGEN
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3419530 |
Preparation of macromolecular polyoxymethylenes
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3418284 |
Copolymerization of trioxane and norbornadiene or a monoalkyl-substituted derivative thereof in the solid state
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3415786 |
Copolymerization of trioxane and norbornadiene in a two-stage process
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3415785 |
Copolymerization of trioxane and norbornadiene with a prepolymer catalyst
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3410827 |
Linear polymer of beta-cyanopropionaldehyde
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3408330 |
Polymerization of 3, 4-dihydro-2h-pyran-2-carboxaldehyde
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3405094 |
Process for stabilizing aldehyde polymers
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3397183 |
Method for producing crystalline aldehyde copolymers
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3395125 |
Linear polyglutaraldehyde
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