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| Number | Title | Issue Date |
| 4093601 | Vinyl esters of tetracarboxylic acids and resins derived therefrom Vinyl esters of tetracarboxylic acids having the following general formula: (RO 2 C')2 .dbd.X.dbd.(C"O2 R')2 wherein .dbd.X.dbd. is selected from tetravalent 5 or 6 membered or double 6 mem... | 06/06/1978 |
| 4092470 | Stable, pumpable, aqueous suspensions of organic peroxides Stable, pumpable, highly concentrated aqueous suspensions of organic peroxides containing (a) nonionic emulsifiers having a maximum HLB value of 12.5 and (b) nonionic emulsifiers having a minimum HLB value of 12.5 or anionic emulsifiers.... | 05/30/1978 |
| 4085264 | Process for preparing copolymers of acrylic acid or methacrylic acid and acrylic and methacrylic acid esters A process for the manufacture of copolymers by copolymerizing acrylic acid or methacrylic acid with esters of acrylic acid and methacrylic acid in the presence of polymerization initiators, in which methyl methacrylate, acrylic acid and/or methacrylic aci... | 04/18/1978 |
| 4079074 | Unsymmetrical diperoxides and processes of use in polymerizing unsaturated monomers Unsymmetrical diperoxides of the general structure: ##STR1## for example, 4-(t-butylperoxycarbonyl)-3-hexyl-6-[7-(tbutylperoxycarbonyl)heptyl] cyclohexene, are useful for polymerizing ethylenically unsaturated monomers (such as styrene). The pol... | 03/14/1978 |
| 4075199 | Tertiary aliphatic alpha-peroxyazo compounds Tertiary-aliphatic alpha-peroxyazo compounds represented by the structure ##STR1## processes for preparing these compounds by reacting ##STR2## with salts or salt solutions of... | 02/21/1978 |
| 4068064 | Method for preparing monovinyl aromatic monomer-acrylonitrile copolymer Improved monovinyl aromatic monomer-acrylonitrile copolymers are prepared by polymerizing at temperatures above 80° C in the presence of certain free radical initiators, the resultant polymers are prepared at high rates of conversion, have relatively hig... | 01/10/1978 |
| 4064116 | ABS polymer and process for its preparation ABS polymers having improved physical properties are prepared by graft polymerizing, in an aqueous medium, and in the presence of a suspending agent, styrene and acryonitrile onto a butadiene polymer in the form of a latex using certain peroxy ester catal... | 12/20/1977 |
| 4063013 | T-Alkyl peresters of t-hydroperoxides catalysts for polymerization of unsaturated monomers Novel tertiary alkyl peresters of tertiary hydroperoxides are used as polymerization initiators wherein the peresters are characterized by the tertiary alkyl group of the acid moiety having at least two alkyl groups of two or more carbon atoms and the ter... | 12/13/1977 |
| 4060678 | Cationic hydrogels based on hydroxyalkyl acrylates and methacrylates Novel cationic hydrogels, containing basic (cationic) groups in their molecular structure, and processes for their preparation are described. These novel hydrogels are three-dimensional polymer networks, having good water permeability and mechanical prope... | 11/29/1977 |
| 4058491 | Cationic hydrogels based on heterocyclic N-vinyl monomers Novel cationic hydrogels, containing basic (cationic) groups in their molecular structure, and processes for their preparation are described. These novel hydrogels are stable, three-dimensional polymer networks, having good water permeability and mechanic... | 11/15/1977 |
| 4058655 | Manufacture of low molecular weight poly-N-vinylpyrrolidone-2 Low molecular weight poly-N-vinyl-pyrrolidone-2 is prepared by polymerizing N-vinylpyrrolidone-2 at elevated temperature in the presence of organic peroxides which carry organic radicals on either side of the peroxide group.... | 11/15/1977 |
| 4056671 | Styrene acrylonitrile copolymers with high dimensional stability under heat Copolymers with improved dimensional stability under heat consisting essentially of (meth)acrylonitrile, styrene and at least one aliphatic monoolefin with 2 to 8 carbon atoms.... | 11/01/1977 |
| 4055713 | Iodine molecular weight regulators in suspension polymerization systems Iodine or organic iodides are effective in suspension polymerization systems as molecular weight regulators or modifiers. These modifiers are especially suited for the suspension ABS processes.... | 10/25/1977 |
| 4054733 | Ar-halo-ar(t-alkyl)styrenes polymers Ar-halo-ar(t-alkyl)styrenes, e.g., 2-chloro-4-(t-butyl)styrene, polymerize to form materials having unusually high temperature resistance. Additionally, compositions of such monomers, unsaturated polyesters and free-radical generating catalysts cure at lo... | 10/18/1977 |
| 4053696 | Manufacture of vinylpyrrolidone polymers A process for the continuous manufacture of vinylpyrrolidone polymers of low K values, wherein vinylpyrrolidone, with or without comonomers copolymerizable therewith, is polymerized in organic solvents at elevated temperatures and superatmospheric pressur... | 10/11/1977 |
| 4051167 | Alpha halo substituted peroxyesters and their use as polymerization initiators Aliphatic peroxyester polymerization initiators whose thermal stability is controlled by a bromine or chlorine substituent on the carbon atom in the alpha position relative to the carbonyl group in the acid moity of the perester. The initiators show incre... | 09/27/1977 |
| 4036909 | Process for the polymerization and copolymerization of vinyl and diene compounds Monomeric conjugated or unconjugated organic compounds are polymerized in an initiator systems consisting of an organic peroxide and a macromolecular compound consisting of a polymer or copolymer of styrene or styrene derivative containing at least one te... | 07/19/1977 |
| 4036788 | Anionic hydrogels based on heterocyclic N-vinyl monomers Novel anionic hydrogels, containing acidic groups, and their preparation are described. These novel hydrogels are stable, three-dimensional polymer networks, having good water permeability and mechanical properties. They are obtained by simultaneous polym... | 07/19/1977 |
| 4034145 | Anaerobically hardening adhesives and sealants containing an organic percarboxylic acids Organic percarboxylic acids are stabilizers for anaerobically-setting adhesive compositions wherein the principal adhesive component is a (meth) acrylic acid ester and the catalyst is an organic peroxide. The percarboxylic acid improves the storage-stabil... | 07/05/1977 |
| 4033983 | Nonflammable coating material An improved nonflammable coating composition containing vinyl chloride, dialkyl maleate, and bis (2-chloroethyl) vinyl phosphonate, the improvement comprising forming a tertelomer using a free radical initiator in the presence of xylene, wherein the alkyl... | 07/05/1977 |
| 4032605 | Alpha-halo substituted diacyl peroxides Asymmetrical organic diacyl peroxide polymerization initiators having enhanced initiator efficiency and characterized by the presence of an acyclic acyl group of four or more carbon atoms having bromo or halo substitution at the alpha carbon atom, the oth... | 06/28/1977 |
| 4029875 | Radical polymerization of ethylene in the presence of cyclic olefin Radical polymerization of ethylene in the presence of an initiator and up to 500 ppm of a cyclic olefin having from 5 to 12 carbon atoms and a ring of 5 to 9 members or styrene and its alkyl homologues.... | 06/14/1977 |
| 4028342 | Polymeric phenolic antioxidants Polymeric phenols of the formula ##STR1## WHEREIN N IS AN INTEGER FROM 3 TO 2,000, R1 is a lower alkyl and R2 is hydrogen or a lower alkyl, are disclosed. Their preparation and preferred use as antioxidants, especially nonabsorb... | 06/07/1977 |
| 4027063 | Flame retardant thermosetting resin A flame retardant thermosetting resin composition having improved properties as an electrical insulating material and being particularly suited for use in printed circuit boards composed essentially of acryloyloxy- or methacryloyloxy-terminated butadiene ... | 05/31/1977 |
| 4020256 | Method for preparing polymers from water soluble vinyl monomers A concentrated solution of a water-soluble vinyl monomer is mixed at or below room temperature with an effective amount of a peroxide catalyst and the resulting solution is freed of inhibitory oxygen and thereafter atomized into a reaction vessel containi... | 04/26/1977 |
| 4012575 | Homopolymers of cis-5-norbornene-2,3-dicarboxylic anhydrides Novel homopolymers of the exo and endo cyclic adducts of maleic anhydride and cyclic conjugated dienes such as cyclopentadiene. The homopolymers are prepared by heating the cyclic adduct in the presence of a free radical catalyst, such as a peroxygen comp... | 03/15/1977 |
| 4007322 | Acrylic anaerobic sealant compositions and method of bonding Anaerobic sealant compositions comprise a monomer having one of the general formulas ##STR1## wherein R is hydrogen, halogen, or alkyl containing 1 to 5 carbon atoms and wherein R' is hydrogen, halogen, alkyl containing 1 to 5 carbon atoms, or -... | 02/08/1977 |
| 4007323 | Initiator for anaerobic compositions An initiator, particularly useful for anaerobic compositions and replacing the commonly used hydroperoxides, having the formula ##STR1## In a preferred embodiment, R is a lower alkyl group, and R' is hydrogen and Q is a hydroxyl group.... | 02/08/1977 |
| 4005249 | Polymerization of vinyl chloride Homopolymers and copolymers of vinyl chloride are produced in the form of a powder by a bulk polymerization process which involves a dual temperature operation. Vinyl chloride (either alone or admixed with other copolymerizable monomers) is contacted with... | 01/25/1977 |
| 3995099 | Copolymers of endo and exo cis-5-norbornene-2,3-dicarboxylic anhydrides Novel copolymers of the endo and exo cyclic adducts of maleic anhydride and cyclic conjugated dienes such as cyclopentadiene. The copolymers are prepared by heating either of the cyclic adducts in the presence of a free radical precursor, such as a peroxy... | 11/30/1976 |
| 3986546 | Method of making a foundry mold or core with an anaerobically cured adhesive Solid particulate materials are bonded together to form a foundry mold or core by I. forming a mixture of the particles and an anaerobically-curing adhesive and moulding the mixture to the desired shape, and Ii. causing the adhesive to cure and bond the partic... | 10/19/1976 |
| 3987018 | Continuous process for the preparation of acrylonitrile polymers and copolymers A continuous process for polymerizing acrylonitrile monomer or copolymerizing a mixture of acrylonitrile monomer and a further ethylenically unsaturated monomer copolymerizable therewith in an aqueous medium and in the presence of a catalytic redox system... | 10/19/1976 |
| 3987019 | Anaerobically hardening adhesives and sealants containing an organic sulfonyl hydrazones Organic sulfonyl hydrazones are accelerators for aerostable, anaerobically-setting adhesive compositions. They provide rapid setting of the adhesive with formation of bonds of good strength, and have little adverse effect upon the storage stability of the... | 10/19/1976 |
| 3985718 | Polymerization of olefinic monomers using a four component initiator Four component polymerization initiators for olefinic monomers comprise (1) an oxidizing agent such as hydrogen peroxide, a persulphate, a permanganate, a chlorate, a perchlorate, a bichromate, a bromate, a ceric salt, an oxazirane, an organic peroxide or... | 10/12/1976 |
| 3984386 | Polymerization of ethylenically unsaturated monomer with dialkyl pyrocarbonate and hydrogen peroxide Ethylenically unsaturated material susceptible to free radical polymerization, e.g., vinyl chloride monomer, is polymerized, e.g., in an aqueous medium, with an initiator system comprising, in combination, dialkyl pyrocarbonate, hydrogen peroxide, and alk... | 10/05/1976 |
| 3984385 | Anaerobically hardening adhesives and sealants containing a hydrazide accelerator Organic sulfonic acid hydrazides are accelerators for aerostable anaerobically-setting adhesive compositions. They can be used with stabilizers. Preferred hydrazides of this group are the aryl sulfonic acid hydrazides, for example benzene sulfonic acid hy... | 10/05/1976 |
| 3981850 | Process for preparing copolymers of ethylene and vinyl esters or mixtures with other ethylenically unsaturated monomers Polymers of 1,000 to 50,000 and preferably of 1,000 to 2,900 number average molecular weight, comprising 3 to 40 molar proportions of ethylene per molar proportion of an ethylenically unsaturated monomer, are prepared by free radical catalysts in a solven... | 09/21/1976 |
| 3980628 | Large capacity external cooled vinyl halide polymerization reactor A process for polymerizing vinyl halide monomer in a large capacity reactor. Liquid polymerization medium comprising water, surfactant, and monomer is charged to the reactor, polymerization catalyst is added, and the polymerization medium is agitated in a... | 09/14/1976 |
| 3980731 | Polyester compositions with carbonyl-containing compounds Unsaturated polyester compositions which can be readily cured without the formation of gas are disclosed. The compositions contain a carbonyl-containing compound of the formula ##EQU1## wherein R1 is hydrogen, branched or unbranched alkyl,... | 09/14/1976 |
| 3979352 | Aqueous base-soluble resin compositions Polymerization products of carboxyl-free and carboxylsubstituted ethylenically unsaturated monomers have retained with the resin a reaction solvent mixture of high boiling alcohols, of which about 30 to 60% are normally liquid, waterinsoluble alcohols. Th... | 09/07/1976 |
