Abstract:
The present invention provides a radiation curable vinyl-silicone pressure-sensitive adhesive composition which combines the advantages of silicone and acrylate pressure-sensitive adhesives and which does not experience gross phase separation problems. The composition comprises at least about 20 weight percent of a certain telechelic silicone polymer, about 0.5 to about 80 weight percent of monofunctional free-radically polymerizable vinyl monomer copolymerizable with the silicone polymer, and a sufficient amount of a silicate MQ tackifying resin to impart a degree of adhesive tack to the cured composition at the use temperature, wherein the weight percentages of the silicone polymer and the monomer are based upon the total weight of the silicone polymer and monomer.
Abstract:
A composition which is curable to an elastomer comprising:A polymer or mixture of polymers of the formula ##STR1## wherein: X are monovalent moieties having ethylenic unsaturation which can be the same or different;Y are divalent linking groups which can be the same or different;m is an integer of 0 to 1;D are monovalent moieties which can be the same or different selected from the group consisting of hydrogen, an alkyl group of 1 to about 10 carbon atoms, aryl, and substituted aryl;R are divalent hydrocarbon groups which can be the same or different;R.sup.1 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl;R.sup.2 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl;R.sup.3 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, vinyl, aryl, and substituted aryl;R.sup.4 are monovalent moieties which can be the same or different selenited from the group consisting of alkyl, substituted alkyl, vinyl, aryl, and substituted aryl; andn is an integer of about 270 to about 1000.A composition which is curable to a pressure sensitive adhesive comprising the above polymer and a sufficient amount of tackifier. The invention also relates to fluorosilane compounds useful in the preparation of silicone macromonomer, their preparation and the preparation of silicone macromonomer.
Abstract:
Novel pressure-sensitive adhesives are described which show significant resistance to solvents and working fluids such as jet fuel, hydraulic fluid, de-icing fluid and the like. Adhesive compositions comprise nonaqueous dispersions of copolymers of acrylic monomers prepared in the presence of a vinyl-substituted fluoroalkyl siloxane having the general formula I and a macromonomeric stabilizer. The adhesives prepared from the adhesive compositions exhibit excellent adhesion to glass, aluminum, and low surface-energy materials such as fluoroalkyl siloxane elastomers.The fluoroalkyl siloxane has the formula ##STR1##
Abstract:
A method of using a pressure sensitive adhesive to form a moisture resistant, water-dispersible tape is provided. The adhesive and tape are resistant to autoclavation conditions and/or moisture and body fluids during usage, and are water-dispersible when immersed in aqueous solutions. The tape may be used with cloth body coverings, such as garments such as hospital gowns, drapes, dressings, diapers and other body coverings which require cloth to cloth or cloth to skin adhesion in the presence of moisture and bodily fluids yet be dispersible from such body coverings during laundering or other aqueous alkali immersion.
Abstract:
A method of using a pressure sensitive adhesive to form a moisture resistant, water-dispersible tape is provided. The adhesive and tape are resistant to autoclavation conditions and/or moisture and body fluids during usage, and are water-dispersible when immersed in aqueous solutions. The tape may be used with cloth body coverings, such as garments such as hospital gowns, drapes, dressings, diapers and other body coverings which require cloth to cloth or cloth to skin adhesion in the presence of moisture and bodily fluids yet be dispersible from such body coverings during laundering or other aqueous alkali immersion.
Abstract:
Compositions having a fluoropolymer with a nitrile-containing cure site and at least a) a mono azide with at least one functional group in the beta position, or b) a polyazide, as a curing agent as well as methods and articles thereof are described. Articles of this disclosure are found to exhibit excellent chemical resistance and thermal stability.
Abstract:
Described herein are substantially linear copolymeric compositions having at least two azide groups and at least two non-activated acetylene groups. The azide groups and the non-activated acetylene groups are reacted to cure the substantially linear copolymer composition. Also, described are methods of making and using such substantially linear copolymeric compositions.
Abstract:
A method for aqueous bead-type suspension polymerization of (meth)acrylic monomers to prepare non-agglomerating, storage stable (meth)acrylic polymer beads which are extrudable at low temperatures. The invention also relates to the polymer beads and to their use as adhesive, in particular as a pressure sensitive adhesive. The invention also discloses adhesive compositions comprising the polymer beads.
Abstract:
The current invention provides a photopolymerized pressure-sensitive adhesive which adheres well to all common surfaces and has an outstanding ability to bond to plasticized vinyl substrates and to remain firmly bonded thereto even after the in contact therewith for extended periods of time comprising the photopolymerization reaction product of a mixture containing about: 60-95 parts of alkyl acrylate; 5-40 parts monoethylenically unsaturated polar copolymerizable monomer; 10-30 parts ethylene vinylacetate copolymer containing about 40% to 70% vinylacetate; and 0.1-1 part photoinitiator.
Abstract:
Described herein are substantially linear copolymeric compositions having at least two azide groups and at least two non-activated acetylene groups. The azide groups and the non-activated acetylene groups are reacted to cure the substantially linear copolymer composition. Also, described are methods of making and using such substantially linear copolymeric compositions.