Abstract:
Slurry copolymerization of maleic anhydride with (meth)acrylic acid and, optionally, with C1-C4 alkyl vinyl ether in a cosolvent system of cyclohexane and ethyl acetate yields a pumpable slurry, from which uniform, fine, white powders having a predetermined weight average molecular weight of about 10,000 to one million, preferably about 30,000 to 400,000 are obtained. The copolymers are useful in a denture adhesive composition which is a mixed partial salt of the copolymer.
Abstract:
What is provided herein is a stabilized aqueous solution of a C1-C5 alkyl vinyl ether and maleic acid copolymer which includes about 100 to 1,000 ppm of (1) an additive mixture of (a) about 30-70 % by weight of ethylenediaminetetraacetic acid EDTA and (b) about 30-70 % by weight of a secondary additive which is an organic antioxidant and/or free radical scavenger selected from t-butylhydroquinone, propyl gallate and N,N-diethylhydroxylamine; or (2) 10-500 ppm of an inorganic reducing agent such as sulfur dioxide and salts derived from sulfur dioxide and alkali metals such as sodium or potassium bisulfite, sodium or potassium metabisulfite, sodium or potassium thiosulfite, or sodium or potassium sulfite, said stabilized solution exhibiting a retention of at least about 85-90 % of its original viscosity after 3 months.
Abstract:
What is described herein is a terpolymer of maleic acid (MAA)/maleic anhydride (MAN)/alkylvinylether (AVE), made by partial cyclization, e.g. 1-99 %, of a maleic acid/alkylvinylether copolymer, preferably comprising, in mole %, 1-49 % MAA/1-49 % MAN/50 % AVE, and derivatized terpolymers thereof.
Abstract:
The hair setting shampoo composition comprises a resin provided by about 1-15 % by weight of about a 20-50 % resin active alcoholic solution of the alkyl half-ester of a C1-C5 alkyl vinyl ether-maleic anhydride copolymer having a molecular weight of at least one million, which is about 5-90 % neutralized, preferably with about 0.01-1 % by weight of 2-amino-2-methyl-1-propanol, about 5-60 % by weight of a surfactant, optionally 0-10 % by weight of added ethanol, and about 30-90 % by weight of water. The composition provides a subtle temporary set on hair of the user without the use of auxiliary fixatives in the composition. The mousse hair composition includes 3-15 % by weight of the alcoholic solution of the resin, 60-95 % by weight of water, 0.3-2.0 % by weight of a surfactant, and 0-30 % by weight of added ethanol.
Abstract:
Branched polymers are prepared from at least (A) at least one monomer having an electron donor moiety, (B) at least one monomer having an electron acceptor moiety, and (C) at least one multifunctional branching agent comprising a urea moiety and at least two N-vinyl groups. The branched polymers are least 20% (by weight) soluble in a solvent for which the corresponding polymer of equal molecular weight made without said multifunctional branching agent is at least 20% (by weight) soluble. Due in part to the wide range of chemistries and solubility and rheological properties, the branched polymers find application in personal care, pharmaceutical/nutritional, and performance chemicals compositions.
Abstract:
A polymer for use in an oral care composition which includes a monomer repeat unit containing an active material covalently bonded to a hydrolyzable side group of said monomer unit, and a spacer group positioned between the main chain of said polymer and said hydrolyzable side group, said polymer having a predetermined rapid rate of aqueous hydrolysis to release said active material therefrom.
Abstract:
A process is described for rendering amino-group-containing polymer solutions substantially odorless. A solution of the terpolymer of vinyl pyrrolidone, vinyl caprolactam and dimethylaminoethyl methacrylate, for example, is treated with 0.1-10 % by weight of an acidic compound, or an acidic ion-exchange resin, to render the solution substantially odorless.
Abstract:
An antimicrobial polymer which is stable to aqueous hydrolysis contains a phenolic antimicrobial agent covalently bounded to one or more polymerized ethylenically unsaturated monomer units preferably through an imide and/or amide group.
Abstract:
What is described is a polymeric hydrogel of a polymeric anhydride or acid, e.g. maleic anhydride or maleic acid polymer, or copolymer thereof, crosslinked with a crosslinking agent containing at least 2 crosslinkable groups, particularly, -OH or -NH 2 , or both. The reaction product is a crosslinked polymeric ester or amide/imide, or both, suitably having a mole ratio of -OH, or -NH 2 , to -COOH, of 1:10 to 10:1, preferably 2:10 to 7:1. The hydrogel is particularly swellable in water, e.g. > 100 % in 1 hour in aqueous media; and forms a thin, tacky layer on a substrate, which property is useful in bioadhesive products.
Abstract:
Terpolymers of maleic anhydride, a C1-C5 alkyl vinyl ether and isobutylene or a C12-C14 alpha-olefin, and crosslinked products thereof, are provided herein for use in thickener, denture adhesive, sunscreen, hair spray, and waterproofing compositions. The alpha-olefin comonomer is a hydrophobic, straight chain, unsaturated hydrocarbon such as dodecene or tetradecene, which is present in the terpolymer in predetermined amounts relative to the hydrophilic maleic anhydride component, to provide a terpolymer having a suitable HLB for these applications. The isobutylene comonomer provides hydrophilic terpolymer compositions which are particularly useful as denture adhesives.