摘要:
An aqueous composition that includes a) aqueous hydroxy functional, carboxy functional polymer including the reaction product of at least 5% by weight α,β-ethylenically unsaturated hydroxy monomer, at least 30% by weight ethylenically unsaturated carboxylic acid monomer, from 0% by weight to less than 50% by weight α,β-ethylenically unsaturated nonhydroxy functional, noncarboxy functional monomer, and chain transfer agent, and b) condensation accelerator, and articles that include a nonwoven web including glass fibers, and cured aqueous binder composition.
摘要:
An aqueous composition that includes a) aqueous hydroxy functional, carboxy functional polymer including the reaction product of at least 5% by weight α,β-ethylenically unsaturated hydroxy monomer, at least 30% by weight ethylenically unsaturated carboxylic acid monomer, from 0% by weight to less than 50% by weight α,β-ethylenically unsaturated nonhydroxy functional, noncarboxy functional monomer, and chain transfer agent, and b) condensation accelerator, and articles that include a nonwoven web including glass fibers, and cured aqueous binder composition.
摘要:
An aqueous composition that includes a) aqueous hydroxy functional, carboxy functional polymer including the reaction product of at least 5% by weight α,β-ethylenically unsaturated hydroxy monomer, at least 30% by weight ethylenically unsaturated carboxylic acid monomer, from 0% by weight to less than 50% by weight α,β-ethylenically unsaturated nonhydroxy functional, noncarboxy functional monomer, and chain transfer agent, and b) condensation accelerator, and articles that include a nonwoven web including glass fibers, and cured aqueous binder composition.
摘要:
Imidazolidinone compounds of the formula: ##STR1## where R is a C.sub.3 -C.sub.5 alkylene group, R.sup.1 and R.sup.2 are independently H or C(.dbd.O)R.sup.4, R.sup.3 is an aliphatic hydrocarbon group optionally substituted with one or more alkoxy groups or interrupted by one or more ether oxygen atoms, and R.sup.4 is a hydrocarbon group substituted with an active hydrogen functional group are useful as chain extending monomers providing pendant imidazolidinone functionality to polyurethane/urea and epoxy polymers. The subject imidazolidinone compounds may also be incorporated into polyester/polyamide polyols or reacted to prepare radically polymerizable ethylenically unsaturated monomer and prepolymer compounds used in the synthesis of emulsion polymers.
摘要:
The present invention relates to a method of preparing adhesive coated articles and cold seal bonded laminates therefrom. Specifically, it relates to a method wherein certain polychloroprene based adhesive compositions are used to form adhesive coated substrates that are non-blocking and pressure sealable at ambient temperature. In a preferred embodiment, the invention relates to a method for the preparation of coated substrates and articles that are particularly useful for the manufacture of medical packaging and tamper evident applications.
摘要:
Improved anionic water dispersible polyurethanes are disclosed. Polyurethane-urea polymers in aqueous dispersion are obtained by chain extending an NCO-containing prepolymer in aqueous medium. The NCO-containing prepolymer is prepared by reacting a polyisocyanate with an active hydrogen-containing compound such as a polyol and dimethylolpropionic acid (DMPA) to form a pre-prepolymer and to this is added a diamine monomer containing a pendant aliphatic, to form the prepolymer which is then dispersed in water and chain extended. The improved anionic water dispersible polyurethane polymers of the invention form excellent coatings and adhesives.
摘要:
Melamine-formaldehyde based adhesive compositions having enhanced bond strengths when subjected to thermal and mechanical stresses. The invention further describes a process wherein melamine-formaldehyde resins are reacted with amines in the presence of water-based sulfonated polyurethane-urea polymers. The process substantially reduces the release of formaldehyde and generates a network of interpenetrating polymers having enhanced peel adhesion failure temperatures.
摘要:
Sulfonated polyester polyols and mixtures of sulfonated polyester polyols and hydroxy carboxylic acids are used to prepare improved aqueous anionic poly(urethane/urea) dispersions with a high crystallization rate, low heat activation temperature, high green strength, stability at low pH, which show good compatibility with other water based polymers and with crosslinkers. The aqueous anionic poly(urethane/urea) dispersions have high heat resistance after curing or blending with a crosslinker.
摘要:
The present invention discloses aqueous paint compositions having enhanced adhesion characteristics. The compositions contain at least one water-soluble and/or water-dispersible polyether amide comprising the reaction product of polyoxyalkylene diamines and polycarboxylic acids. The dried compositions have improved adhesion characteristics making them particularly useful protective and/or decorative coatings on substrates including wood, metal, concrete, and plastic.
摘要:
Compounds containing a ureido group which are useful in preparing dispersions of polymers having good wet adhesion properties and low volatility. Compounds having the formula: ##STR1## where R.sup.1 is H or an alkyl group, R.sup.2 is alkylene optionally interrupted with one or more ether oxygen atoms and A is H or a residue of an active hydrogen reactive compound are useful for incorporating ureido and optionally nitrile functionality into polymers and as precursors to amino compounds prepared by reduction of the nitrile group thereof. Compounds having the formula: ##STR2## where B is defined as for A and the same or different than A are also disclosed. The disclosed compounds have use as chain extending or terminating monomers for polyurethane dispersions when one or both of A and B are H and, when one of A and has ethylenic unsaturation, as wet adhesion monomers in dispersions of free radically polymerized polymers of unsaturated monomers.