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| Number | Title | Issue Date |
| 4426492 | Disposable, hydrogel soft contact lenses Stable three dimensional hydrogels which absorb water, but are insoluble in water, and are particularly useful for the making of soft contact lenses, are prepared by reacting a water insoluble polyvinyl resin which contains reactive hydroxyl groups in its... | 01/17/1984 |
| 4171457 | 1-Hydroxy-2-bromo-3-allyloxypropane 1-Hydroxy-2-Bromo-3-Allyloxypropane (allyl glycidyl ether bromohydrin) and 1-hydroxy-2-bromo-3-allyloxypropane phophoric acid ester (allyl glycidyl ether bromophosphate), which are useful as polymerizable flame-retardants, are described. 1-Hydroxy-2-bromo... | 10/16/1979 |
| 4163092 | 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... | 07/31/1979 |
| 4144212 | Air-curing copolymer latices Air-curing copolymer latices are described. The preferred copolymer latices are prepared by emulsion copolymerization, in the presence of a free radical polymerization catalyst such as inorganic or organic peroxide polymerization catalysts, with a blend (... | 03/13/1979 |
| 4110286 | Stable polyurethane latices, emulsifiable prepolymers therefor and methods of making the same Novel emulsifiable prepolymers for polyurethanes comprising an isocyanate prepolymer a minor proportion of the terminal isocyanate groups of which have been reacted with a quaternized tertiary amino alcohol, storage stable polyurethane latices produced th... | 08/29/1978 |
| 4071508 | Anionic hydrogels based on hydroxyalkyl acrylates and methacrylates Novel anionic hydrogels, containing acidic 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 mechanical propertie... | 01/31/1978 |
| 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 |
| 4049608 | Functional monomers and copolymers thereof Novel copolymerizable esters of cinnamic acid or an ω-alkenoic acid of from 4 to 18 carbon atoms, such as undecylenic acid, with certain hydroxyalkane sulfonic acids, such as isethionic acid, are described together with processes of making them and copol... | 09/20/1977 |
| 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 |
| 4029578 | Catalytic process for ozonation of water containing organic contaminants An improved catalytic process for the ozonation of water containing organic contaminants is disclosed. In this process the water, which may be either waste water or potable water, containing organic contaminants is contacted with ozone, preferably at a pH... | 06/14/1977 |
| 4022851 | 1-Hydroxy-2-bromo-3-allyloxy-propane phosphoric acid ester 1-Hydroxy-2-Bromo-3-Allyloxypropane (allyl glycidyl ether bromohydrin) and 1-hydroxy-2-bromo-3-allyloxypropane phosphoric acid ester (allyl glycidyl ether bromophosphate), which are useful as polymerizable flame-retardants, are described. 1-Hydroxy-2-brom... | 05/10/1977 |
| 4009201 | Polymerizable cationic monomers Novel polymerizable cationic monomers, which contain two or more cationic groups in the molecule, and homopolymers and copolymers thereof are described. These novel cationic monomers are compounds represented by the general formula: ##STR1## AND... | 02/22/1977 |
