5 edition of Dilute solution properties of N-cyclohexylactylamide-vinyl acetate copolymers. found in the catalog.
|The Physical Object|
|Pagination||xvi, 92 p. :|
|Number of Pages||76|
nodata File Size: 4MB.
Disordered polymers: In the solid state, atactic polymers, polymers with a high degree of and random copolymers form i. The intrinsic viscosity of IPAM-85 is 7. An inefficient condensation between these may lead to both increased hydrolysis of the sulfonic acid chloride to the non-reacting sulfonic acid, and an uncontrolled, higher molecular weight polymer due to the inefficient reaction of dihydroxy species and the sulfonic acid chloride.
Generally, the units are present as blocks. In a specific embodiment, a method of preparing a thermoplastic composition comprises melt combining a polycarbonate and a sulfonate end-capped polycarbonate. Thermoplastics are useful for preparing articles such as those listed above.
Accordingly, various modifications, adaptations, and alternatives may occur to one skilled in the art without departing from the spirit and scope herein.less than 40, it may be desirable to use a relatively larger amount of the polycarbonate-polysiloxane copolymer. An amount of sulfonate end-capped polycarbonate useful for improving ionizing radiation stability may be determined according to the molar quantity of the sulfonate end-group present in the thermoplastic composition.
and a load of 1. In another embodiment, a method of forming a thermoplastic composition comprises melt blending a sulfonate end-capped polycarbonate of formula: Z-S O 2—O- -L- m-O—S O 2-Z wherein each Z is independently an alkyl or aryl group, and - -L- m- is a polycarbonate linking group with m units of linking unit L, wherein m is at least one; and a polycarbonate, wherein a molded article having a thickness of 3.
5 to 10 micrometers, specifically 0. 1 to 30 parts by weight, more specifically 1 to 20 parts by weight, based on 100 parts by weight of the total composition, excluding any filler. 6,723,864 can be used to synthesize the poly siloxane-carbonate copolymers. comonomers for use in the rigid phase include acrylonitrile, methacrylonitrile, methyl meth acrylate, ethyl meth acrylate, n-propyl meth acrylate, isopropyl meth acrylate, and the like, and combinations comprising at least one of the foregoing comonomers.
12 millimeters and consisting of the sulfonate end-capped polycarbonate, a polycarbonate resin, and an effective amount of each of an aliphatic diol, a mold-release agent, and an antioxidant has, after exposure to a total gamma radiation dose of 83 kGy and when measured according to ASTM D1925-70, an increase in yellowness index dYI of less than or equal to 36, when compared to the unexposed article. On the other hand, the addition of chaotropic salts leads to diminished hydrogen bonding, which can be accompanied by decreased hydrophobic associations.
Such articles can maintain these desired properties after irradiation at high doses up to 83 kGy of gamma radiation. Historically, products arising from the linkage of repeating units by have been the primary focus of. 0] were determined from quasi-elastic light scattering experiments Table 4.
Ozone-induced cracking in natural rubber tubing Polymer oxidation has caused accidents involving. Examples of conjugated diene monomers that may be used are butadiene, isoprene, 1,3-heptadiene, methyl-1,3-pentadiene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-pentadiene; 1,3- and 2,4-hexadienes, and the like, as well as mixtures comprising at least Dilute solution properties of N-cyclohexylactylamide-vinyl acetate copolymers.
of the foregoing conjugated diene monomers.
A thermoplastic composition comprises a sulfonate end-capped polycarbonate of formula: Z-S O 2—O- -L- m-O—S O 2-Z wherein each Z is independently an alkyl or aryl group, wherein - -L- m- is a polycarbonate linking group with m units of linking unit L, and wherein m is at least one. When present, halogen containing flame retardants are present in amounts of 1 to 25 parts by weight, more specifically 2 to 20 parts by weight, based on 100 parts by weight of the total composition, excluding any filler.
Turbidimetric Studies in Different Solvents for the IPAM Copolymers Cloud Point Occurs at the Temperature indicated in [degrees]C.