摘要:
Mixtures of chlorendic anhydride and maleic anhydride that are completely free of liquid hydrocarbons and liquid halohydrocarbons without the need for any purification are novel and are prepared by reacting hexachlorocyclopentadiene with a stoichiometric excess of maleic anhydride in the absence of solvents. The process is useful for preparing other Diels-Alder reaction products from maleic anhydride.
摘要:
Foamable compositions based on rigid organic polymers such as polyvinyl chloride contain as the plasticizer a blend of a) a liquid oligomeric ester of phthalic acid, at least one aliphatic dicarboxylic acid or a mixture thereof; and b) a total of at least 15 weight percent, based on total plasticizer, of at least one ester of benzoic acid and/or an alkyl-substituted benzoic acid.
摘要:
Foamable compositions based on rigid organic polymers such as polyvinyl chloride contain as the plasticizer a blend of a) a liquid oligomeric ester of phthalic acid, at least one aliphatic dicarboxylic acid or a mixture thereof; and b) a total of at least 15 weight percent, based on total plasticizer, of at least one ester of benzoic acid and/or an alkyl-substituted benzoic acid.
摘要:
A stemless hip prosthesis uses one or more cables which wrap around the prosthesis and the femur to mount the prosthesis in place thereby avoiding the need to provide the prosthesis with a stem located in the medullary canal.
摘要:
Novel ester compositions are prepared by reacting 1) at least one diol, glycol or oligomeric glycol with 2) a mixture of at least one aromatic monocarboxylic acid and at least one aliphatic monocarboxylic acid containing from 2 to 4 carbon atoms. The compositions are effective plasticizers for a variety of polymers, particularly those employed in water-borne adhesives. The freezing point of the present ester mixtures and their efficacy as plasticizers and other types of additives and/or modifiers for a variety of polymer compositions can be varied by adjusting the relative concentrations of the aromatic and aliphatic acids used to prepare the ester composition.
摘要:
Novel solid benzoate ester compositions are mixtures comprising the trans- and cis-structural isomers of 1,4-cyclohexanedimethanol dibenzoate wherein the trans isomer constitutes from 1 to 66 or from 72 to 99 weight percent of the mixture. The properties imparted to a variety of polymer compositions, including hot melt adhesives, cannot be achieved using the commercially available mixture of these isomers.
摘要:
Plastisols and organosols are provided that include plasticizers that include mono-, di- and triesters of glycerol. The plasticizers are good solvators for polyvinyl chloride and impart low plastisol and organosol viscosities.
摘要:
Plastisols and organosols are provided that include plasticizers that include mono-, di- and triesters of glycerol. The plasticizers are good solvators for polyvinyl chloride and impart low plastisol and organosol viscosities.
摘要:
Plastisols and organosols are provided that include plasticizers that include mono-, di- and triesters of glycerol. The plasticizers are good solvators for polyvinyl chloride and impart low plastisol and organosol viscosities.
摘要:
A polymer composition is provided that includes plastisols and organosols having reduced viscosities and which provide desirable physical properties in films or shaped articles formed from the polymer compositions. The polymer composition includes a finely divided polymer and a liquid phase comprising at least one high solvating plasticizer. The polymer composition includes at least one surfactant having a hydrophilic/lipophilic balance (HLB) value of 12 or more.