摘要:
A process is provided to prepare elastomer modified polymer compositions based on styrenic monomer(s) using certain organic peroxide initiators to increase both rubber particle size and rubber phase volume fraction (gel content).
摘要:
A polymer blend is described which contains at least one acrylic resin or vinyl resin having at least one ionic or ionizable group, and at least one additional polymer. The polymer has small domain sizes with respect to the acrylic resin or vinyl resin. The polymer blend preferably has improved conductivity when formed into a film. Preferably, the polymer blends are useful in a variety of applications including in the formation of a membrane which is useful in batteries and fuel cells. Methods of making the polymer blends are also described.
摘要:
An improved liquid phase process is provided for the fluorination of perchloroethylene to 1,1-dichloro-2,2,2-trifluoroethane in the presence of an antimony catalyst.
摘要:
A method for producing polymer foams having improved fire performance properties is provided, which method comprises using 365mfc as the blowing agent, as well as polyurethane foam compositions comprising a polyol, an isocyanate and 365mfc.
摘要:
An MEA preparation method involves low temperature plasma deposition of catalysts such as platinum onto a substrate to form a proton-conducting cation-exchange membrane. The substrate may be a solid polymer electrolyte membrane, or may include carbon cloth or carbon particles. The deposition is carried out at atmospheric pressure without the addition of noble gases to the reactant carrier.
摘要:
Enhanced conversion rates are realized in a suspension polymerization process for styrene through the use of peroxide initiators having one hour half life temperatures from 101° to 111° C are disclosed. Also disclosed are suitable initiator combinations which provide polymeric products with low residual monomer content at reduced process temperatures, polymerizable compositions containing such initiators and products produced by such processes and compositions.
摘要:
This invention relates to the use of an N-alkylethanolamine or N,N-dialkylethanolamine wherein each N-alkyl group is independently a C 3 through C 12 straight chain or branched alkyl group, the substituted ethanolamine is used in combination with a biocide for the anaerobic shelf stabilization of a latex paint, uncured coating, uncured sealant, uncured adhesive or related product.
摘要:
Foam blowing agent blends of trans-1,2-dichloroethylene and one or more pentanes are provided, as are polyol premixes and foam compositions containing such blends. The resulting foams exhibit dramatic improvement in fire resistance.