摘要:
Coating composition comprising a liquid carrier-based dispersion of at least one olefinic addition polymer, said dispersion of polymer(s) providing polymer bound tertiary amino groups and polymer bound acetoacetyl groups.The compositions are suitable for providing protective or decorative coatings for a range of substrates and have excellent adhesion and wet adhesion properties.The olefinic addition polymers having polymer bound amino and acetoacetyl groups are also claimed.
摘要:
An aqueous polymer dispersion comprising a vinyl polymer with at least two phases comprising: A) 40 to 90 wt % of a vinyl polymer A having a glass transition temperature in the range of from −50 to 30° C.; and B) 10 to 60 wt % of a vinyl polymer B having a glass transition temperature the range of from 50 to 130° C.; wherein vinyl polymer A comprises 0.1 to 10 wt % of at least one acid-functional olefinically unsaturated monomer, wherein at least 20 wt % of the monomer composition used to form vinyl polymer A and vinyl polymer B is derived from at least one bio-renewable olefinically unsaturated monomer.
摘要:
An aqueous coating composition comprising an autoxidisable amide group containing resin having ≧30 wt % of fatty acid residues by weight of autoxidisable amide group containing resin; a Tg in the range of from −40 to +35° C.; ND×AV≦22 mg KOH/g; a Mw in the range of from 2,500 to 20,000 g/mol; a PDi less than 10; an amide group content of at least 10 mmoles/100 g solid; and said composition having: a co-solvent content less that 25 wt %; a N-methylpyrrolidone content 38 wt %; and when a film, a telegraphing value of less than 20 gloss units.
摘要:
An aqueous coating composition (which optionally can coat plastic substrates) the composition comprising a block copolymer and a polymer P; where the block copolymer comprises at least blocks [A]x[B]y; where at least block [A] is obtained by a controlled radical polymerisation of at least one ethylenically unsaturated monomer via a reversible addition-fragmentation chain transfer (RAFT) mechanism (optionally in solution in the presence of a control agent and a source of free radicals); and wherein block [A] comprises 20 to 100 mol % of ethylenically unsaturated monomer units bearing water-dispersing functional groups; wherein block [B] comprises 20 to 100 mol % of ethylenically unsaturated monomer units bearing plastic adhesion promoting functional groups; and wherein polymer P is prepared in the presence of blocks [A]x[B]y. The compositions may be used to coat plastic substrates, foam; surfaces having low surface energy, hydrophobic substrates and/or polyolefins.
摘要翻译:包含嵌段共聚物和聚合物P的组合物的水性涂料组合物(其可任选地可以涂覆塑料基材); 其中嵌段共聚物至少包含嵌段[A] x [B] y; 其中至少通过可逆加成 - 断裂链转移(RAFT)机理(任选在溶液中存在控制剂和自由基来源)通过至少一种烯属不饱和单体的受控自由基聚合获得嵌段[A] ); 并且其中嵌段[A]包含20至100摩尔%的带有水分散官能团的烯属不饱和单体单元; 其中嵌段[B]包含20至100摩尔%的具有塑性粘合促进官能团的烯属不饱和单体单元; 并且其中聚合物P在嵌段[A] x [B] y的存在下制备。 组合物可用于涂覆塑料基材,泡沫; 具有低表面能的表面,疏水性基材和/或聚烯烃。
摘要:
There is described (pref. non-adhesive) coating compositions (which may be either water or solvent borne) that comprise an autoxidisable vinyl polymer, the autoxidisable polymer having a vinyl polymer backbone 25% to 75% by wt of the autoxidisable polymer; fatty acid residue 25% to 75% by wt of the autoxidisable polymer; Tg from −6O° C. to +2O° C., Mw from 3500 to 50000 g/mol; and polydispersity from 2 to 10; the autoxidisable polymer obtained by a process of: (A) polymerising ethylenically unsaturated vinyl monomers comprising: at least one epoxy functional vinyl monomer 15% to 100% by wt total monomers in (A); 0 to 85% of at least one other ethylenically unsaturated vinyl monomer, (preferably other than styrenic monomers) by wt total monomers in (A); (B) reacting the epoxy functional polymer from (A) with fatty acids having an average iodine value from 30 to 250 g I2/100 g fatty acid; where composition has: a) a opt. co-solvent content ≦40% by wt of the composition; b) a solids content either ≧30% (aqueous) ≧60% (solvent based) by wt of the composition, the composition as a coating film having a telegraphing value of less than 10 gloss units (difference between an initial smooth gloss minus an initial rough gloss of the film).
摘要:
An aqueous composition with a sediment content ≦5%, comprising a polyurethane dispersion wherein the polyurethane has an acid value in the range of from 25 to 65 mgKOH/g and comprises (i) 36 to 60 wt % of at least one aromatic polyisocyanate and where the polyurethane is prepared in the presence of (a) ≦5 wt % of 1-methyl-2-pyrrolidinone by weight of the polyurethane, (b) 5 to 100 wt % of 1-ethyl-2-pyrrolidinone by weight of polyurethane and (c) water.
摘要:
A process for obtaining an aqueous emulsion comprising a block copolymer by the solution polymerisation of vinyl monomers to obtain block [B] in the presence of a) a radical precursor; and b) an iodine atom containing block [A]; where block [A] and [B] together comprise 0 to 2 wt % of methacrylic acid; where block [A] and block [B] together comprise ≧2.5 wt % of vinyl monomers bearing ionic or potentially ionic water-dispersing groups not including methacrylic acid; and performing a post polymerisation reaction on the block copolymer emulsion obtained in step II; and wherein said aqueous emulsion has a free vinyl monomer level
摘要:
Aqueous crosslinkable coating composition suitable for anti-graffiti and heavy duty applications comprising: (A) an aqueous polymer emulsion comprising at least one vinyl fluoropolymer which comprises as a polymerized constituent monomer thereof (i) a fluoromonomer(s) having the formula (1) wherein R1 is CH3 or H, R2 is a per-fluorinated C1-5 alkyl group and n is 1, 2, 3 or 4, (ii) a hydroxyl functional monomer(s) and (iii) a carboxylic acid-functional monomer(s) where the vinyl fluoropolymer has a glass transition temperature Tg within the range of from −50 to 90° C. and (B) at least one hydroxyl-reactive crosslinker material
摘要:
An aqueous coating composition containing a non-crosslinkable water-dispersible oligomer(s); a dispersed polymer(s); water and optionally co-solvent wherein the composition has an open time of at least 20 minutes; a wet edge time of at least 10 minutes; a tack free time of ≦24 hours and an equilibrium viscosity of 5,000 Pa·s.
摘要:
Aqueous emulsion of a polymodal multistage polymeric material, wherein: (i) at least 50% of the polymodal multistage polymeric material comprises the polymers of at least two polymerisation stages having a Tg difference of ≧20° C., more preferably ≧40° C., and most preferably ≧60° C.; (ii) at least 50% of the polymodal multistage polymeric material comprises the polymers of at least two polymerisation stages having a Dw differing by ≧50 nm, preferably ≧80 nm and more preferably ≧100 nm; and (iii) the means to form at least one of the differing Tg's in (i) and at least one of the differing Dw's in (ii) are carried out in different stages of the multistage polymerisation to form the polymeric material. The polymer emulsion is useful for protective coatings, printing inks, overprint lacquer formulations, polishes, varnishes, sealants, paint formulations and adhesives.