摘要:
Polymers of one or more radical polymerisable monomers which polymer has pendant groups bearing a centre of permanent positive charge and other pendant groups capable of stably binding the polymer to a surface are useful in the treatment of surfaces to render them biocompatible. The polymers may contain pendant groups which bind the polymer to a surface by physisorption, covalent bonding or ionic interactions. Additionally reactive groups in the polymer may serve as points for attachment of ligands to the polymer when coated on a surface.
摘要:
An aqueous polymer dispersion containing polymer particles formed of at least two polymers, the polymer particles of the dispersion having a minimum film-forming temperature below 60.degree. C. and being formed of two different polymers namely polymer A having a glass transition temperature (T.sub.gA) of not more than 10.degree. C., and forming from 5 to 65% by weight of the total polymer; and polymer B having a glass transition temperature (T.sub.gB) of more than 25.degree. C., and forming from 5 to 65% by weight of the total polymer; together with a multifunctional material (C) present in an amount of from 5 to 70% by weight of the total polymer system.
摘要:
Polymers of one or more radical polymerizable monomers which polymer has pendant groups bearing a center of permanent positive charge and other pendant groups capable of stably binding the polymer to a surface are useful in the treatment of surfaces to render them biocompatible. The polymers may contain pendant groups which bind the polymer to a surface by physisorption, covalent bonding or ionic interactions. Additionally reactive groups in the polymer may serve as points for attachment of ligands to the polymer when coated on a surface.
摘要:
Aqueous, autocrosslinking polymer dispersion binders comprising polyhydrazides and carbonyl-containing polyurethane-vinyl hybrid polymers and also, if desired, conventional additives, are useful in base coatings, aqueous coatings, adhesives and printing inks.
摘要:
A ultraviolet-curable coating composition is disclosed, which comprises a specific ultraviolet-curable polyfunctional (meth)acrylate, a specific urethane-curing polymer, and a specific polyisocyanate compound in a specific compounding ratio and having incorporated therein a photo stabilizer and a photopolymerization initiator. The composition provides a coating film of large thickness in one operation and is sufficiently cured even with non-uniform ultraviolet radiation and the coating film obtained from such a composition fully satisfies various requirements, such as appearance, adhesion, and weathering resistance.
摘要:
The invention relates to formation of a resin film excellent in adhesion with metal or other material and also excellent in alkaline resistance. The invention presents a water-based resin dispersion having an acid value of 0 to 15 obtained by emulsion polymerization of a monomer mixture comprising, in 100 parts by weight of .alpha.,.beta.-ethylenically unsaturated monomer, (1) 1 to 20 parts by weight of .alpha.,.beta.-ethylenically unsaturated monomer with a .beta.-ketoester group, (2) 0.05 to 5 parts by weight of crosslinking .alpha.,.beta.-ethylenically unsaturated monomer with two or more radically polymerizable groups, and (3) the rest of other .alpha.,.beta.-ethylenically unsaturated monomer than (1) and (2), by using a radically polymerizable emulsifier at a ratio of 0.2 to 10 parts by weight against the total of 100 pats by weight of the .alpha.,.beta.-ethylenically unsaturated monomer.
摘要:
A process for preparing large dimension emulsion polymer particles and the polymer products of the process are disclosed. In one embodiment, the invention provides particles having a high aspect ratio, having a shape described by a long axis and an intersecting short axis. These particles range in shape from egg-like, through rod-like, up to extended filaments. In another embodiment, the invention relates to large, nearly spherical emulsion polymer particles.
摘要:
A method of preparing macromonomer compositions of a limited average molecular weight containing an olefinic polymerizable end group. The macromonomers may suitably comprise the polymerization product of methacrylate, methacrylonitrile, and methacrylamide monomers, derivatives thereof, and mixtures of such monomers.
摘要:
A binder for use in high gloss latex paints comprises water, a copolymer, and less than about 1 weight percent surfactant. The copolymer comprises about 25 to about 60 weight percent soft monomer, about 40 to about 75 weight percent hard monomer, and about 1 to about 3 weight percent olefinic carboxylic acid monomer. In addition, the copolymer comprises about 0.5 to about 3 weight percent copolymerizable surfactant monomer and/or (i) about 0.5 to about 4 weight percent additional monomer selected from the group consisting of cyanoacetoxy-containing monomers and acetoacetoxy-containing monomers and (ii) about 0.5 to about 3 weight percent ethyleneureido-containing monomer.
摘要:
A substrate is provided with a release surface by application of an emulsion of a vinyl-addition silicone system and catalyst therefor and a particulate component, preferably a resin. The vinyl addition silicone system is cured upon application of heat and removal of water.