摘要:
The invention relates to polyurethanes, inks comprising polyurethanes and their use in ink jet printing where the polyurethane comprises a colored water-dissipatable polyurethane obtainable by chain-terminating a polyurethane prepolymer with a colorant.
摘要:
A water-dissipatable polymer having colorant attached thereto through a covalent —O-link and an ink comprising the water-dissipatable polymer and a liquid medium.
摘要:
The invention relates to polyurethanes, inks comprising polyurethanes and their use in ink jet printing where the polyurethane comprises a colored water-dissipatable polyurethane obtainable from the reaction of a polyisocyanate, a compound providing water-dispersing groups and a colorant having at least two functional groups.
摘要:
An aqueous crosslinkable coating composition suitable for the provision of thick coatings without incurring carbon dioxide bubble formation comprising: (A) an aqueous dispersion of at least one hydroxyl- and acid-functional vinyl polymer having a hydroxyl value of 8 to 250 mg KOH/g of polymer and an acid value of 2 to 55 mg KOH/g of polymer, where the contribution of at least 30% of the acid value results from a monocarboxylic acid(s) of formula: CH2—CR1—Q—CO2H (1) where R1 is H or lower alkyl of 1 to 5 carbon atoms and Q is a spacer group of formula: [—C(═O)—X—(CH2)m—]k (2) where X is —O— or —NH—, m is at least 1, preferably 2 or 3, and k is at least 1, preferably 2, 3, 4 or 5; and (B) at least one organic polyisocyanate. The acid of formula (1) preferably comprises &bgr;-carboxyethyl acrylate.
摘要:
A compound of Formula (1): ##STR1## wherein: X is E--(L.sup.4 O).sub.m --CO--(T).sub.p ; Y is --Si(R.sup.1).sub.3 or X as defined above; T is O, CH.sub.2 or NR.sup.2 ; P is 0 or 1; q is 0, 1, 2, 3 or 4; E comprises an alicyclic or aliphatic epoxy group; each L.sup.1, L.sup.2, L.sup.3 and L.sup.4 independently is an unsubstituted or substituted alkylene group of 1 to 6 carbon atoms wherein any substitution is selected from methyl, amino, ester, hydroxy and ester groups; m is 0 or 1; each R.sup.1 when Y is --Si(R.sup.1).sub.3 is independently unsubstituted alkyl or substituted alkoxy provided that at least one R.sup.1 is unsubstituted alkoxy; and each R.sup.2 independently is H, --L.sup.1 X unsubstituted or substituted alkyl wherein any substitution is selected from poly(oxyalkylene), epoxy and hydrolyzable silyl groups, or --CONH(C.sub.1-20 -alkyl). The compounds are useful in coating compositions and films and coatings formed therefrom.
摘要:
A composition comprising water and the following components: (a) an epoxy compound comprising at least one epoxy group and at least one hydrolysable silyl group; and (b) a hydroxy functional polymer having carboxy and/or sulpho groups. The compositions are generally water-based and may be used for making films and coatings having good mechanical and physical properties.
摘要:
A process for preparing a patterned, cross-linked, acrylic-polymer, film coating on a substrate; the process comprising the steps of: a) applying to the substrate by an ink-jet printing process a mixture comprising: i) one or more cross-linkable, thermally ink-jettable, water-dissipatable, precursor(s) for one or more cross-linked acrylic-polymer(s); ii) one or more cross-linker(s) capable of cross-linking the precursor(s) for the acrylic-polymer(s); and iii) one or more colorant(s); and b) thereafter curing the mixture in situ to form the patterned, cross-linked, acrylic-polymer, film coating on the substrate. Preferably the substrate is a color filter suitable for use in an LCD display and the mixture is applied in a single pass. The precursor may itself comprise polymers, e.g. acrylic polymers. Ink for use in this process and substrates printed by this process are also described.
摘要:
Water-soluble films suitable for water-dissolvable packaging comprising a polyurethane polymer having defined amounts of poly(ethylene oxide) (and optionally poly(propylene oxide)) groups and acid (preferably carboxyl) groups at least 50% neutralised with a base, at least a proportion of which is of the non-volatile type, the polyurethane being made by chain extension of a urethane prepolymer. Also water-soluble packaging (sachets, capsules, bags) made from the films and their use in packaging various materials, and a process for the production of aqueous polyurethane solutions which may be used for making such films.
摘要:
An aqueous coating composition comprising a crosslinkable water-dispersible polyester oligomer wherein said composition when drying to form a coating has the following properties: an open time of at least 20 minutes, a wet edge time of at least 10 minutes, a thumb hard time of ≦48 hours and a tack-free time ≦20 hours and an equilibrium viscosity of ≦5000 Pa.s at any solids content when drying in the range of from 20 to 55 wt % using a shear rate in the range of from 9±0.5 to 90±5 s−1 and at 23±2° C.
摘要:
In the preparation of chlorinated polymers by chlorination in an organic solvent and separation of the solid product by treatment with steam or hot water the proportion of residual solvent in the product is reduced by carrying out the treatment with steam or hot water in the presence of a polymer derived from an olefinic hydrocarbon or chlorohydrocarbon and having a second-order transition temperature below 0.degree. C.