摘要:
A method of forming a toughened article from a blend of a thermoplastic polymer and a comb copolymer is disclosed, along with the toughened article produced thereby. Compositions such as solids blends and melt blends, including a thermoplastic polymer and a comb copolymer, are also disclosed.
摘要:
Adhesive compositions comprising (a) adhesive polymers or copolymers prepared from monomers selected from the group consisting of styrene, butadiene, acrylonitrile, ethylene, vinyl acetate, acrylic acid, esters of acrylic acid, methacrylic acid and esters of methacrylic acid or combinations thereof; and (b) from 1 to 55% on a dry weight basis of a polymeric additive comprising a low molecular weight polymer having a number average molecular weight of 20,000 or less and which comprises polymerized units of at least one ethylenically unsaturated monomer and 5 weight percent or less of a polymerized acid-containing monomer. In preferred form, the polymeric additive is polymerized in the presence of a metal chelate chain transfer agent. In certain embodiments, the polymeric additive has a midpoint Tg of at least 0° C. or greater. Further embodiments of the present invention include methods for forming the polymeric additive in situ in the adhesive composition.
摘要:
A pressure-sensitive adhesive composition includes from about 30 weight percent to about 70 weight percent solids in an aqueous medium. The solids include an acrylic polymer having a glass transition temperature of from about -25.degree. C. to about -85.degree. C. and having an acid number of from about 3 to about 30 and from about 0.75 parts by weight to about 5 parts by weight of a humectant per 100 parts polymer.
摘要:
A colloidally and sedimentation stable coating composition containing ion exchange resins is disclosed. A method of using a colloidally and sedimentation stable coating composition containing ion exchange resins is also disclosed.
摘要:
The present invention provides an aqueous polymerization method for preparing graft copolymers, and copolymer compositions produced therefrom. The method of the present invention includes (a) forming a macromonomer aqueous emulsion containing water insoluble macromonomer particles; (b) forming a monomer composition containing at least one ethylenically unsaturated monomer; and (c) combining at least a portion of the macromonomer aqueous emulsion and at least a portion of the monomer composition and polymerizing the resulting polymerization reaction mixture in the presence of an initiator to form a copolymer composition. The copolymer composition produced contains water insoluble particles of graft copolymer.
摘要:
Gift free coating with improved tannin stain blocking, nicotine stain blocking, efflorescencee resistance, and water spot resistance are disclosed. Pre-treated ion exchange resins are incorporated into the coating compositions to achieve the improvements.
摘要:
A pressure-sensitive adhesive composition includes from about 30 weight percent to about 70 weight percent solids in an aqueous medium. The solids include an acrylic polymer having a glass transition temperature of from about -25.degree. C. to about -85.degree. C. and having an acid number of from about 3 to about 30 and from about 0.75 parts by weight to about 5 parts by weight of a humectant per 100 parts polymer.
摘要:
The present invention relates to: a method of preparing a capstock layer that includes a comb copolymer; a method of preparing a multi-layered polymeric composite, at least one layer of which is a capstock layer; and a multi-layered composite formed by the method of preparing a multi-layered polymeric composite.
摘要:
A method of forming a thermoplastic melt blend including a segmental copolymer, wherein the melt blend displays improved processing characteristics, is disclosed. A method of forming a plastic article including a thermoplastic and a segmental copolymer is further disclosed, as is a plastic article formed thereby.
摘要:
The present invention relates to: a method of preparing a capstock layer that includes a comb copolymer; a method of preparing a multi-layered polymeric composite, one layer of which is a capstock layer; and a capstock layer and a multi-layered composite formed, respectively, thereby.