초록 ▼

The dimensional stability, especially at elevated temperatures such as 70°C., of thermoplastic resin foams, such as those of aliphatic olefin polymers, is substantially improved by the inclusion therein of from 0.01 to 5 weight percent, based upon said resin, of certain benzylideneaniline derivative

The dimensional stability, especially at elevated temperatures such as 70°C., of thermoplastic resin foams, such as those of aliphatic olefin polymers, is substantially improved by the inclusion therein of from 0.01 to 5 weight percent, based upon said resin, of certain benzylideneaniline derivatives, azobenzene derivatives, azooxybenzene derivatives and the like.

대표청구항 ▼

A foamable thermoplastic resin composition, comprising a thermoplastic synthetic resin, a blowing agent, and from about 0.01 to about 5 percent by weight, based on said thermoplastic synthetic resin, of at least one compound represented by the following Formula (I) or (II): [Figure] (I) wherein X is

A foamable thermoplastic resin composition, comprising a thermoplastic synthetic resin, a blowing agent, and from about 0.01 to about 5 percent by weight, based on said thermoplastic synthetic resin, of at least one compound represented by the following Formula (I) or (II): [Figure] (I) wherein X is a radical to be selected out of a group consisting of －CH〓N－, －N〓N－and [Figure] Y and Y′represent, respectively, a radical belonging to a group A consisting of －CN, －COOR, －OCOR, －NO2, －SO3H and －SO3M and a radical belonging to a group B consisting of －OH, －OR, －OR－OCH3, －NH2, －NHR′and R or visa versa, or Y and Y′represent the same radical or different radicals belonging to said group B, with R being an aliphatic hydrocarbon group, R′being an aliphatic hydrocarbon group or a phenyl group, and M being a metal ion belonging to the Group 1a or 2a of the periodic table; and Z represents a hydrogen atom or a radical to be selected out of said group A; [Figure] (II) wherein D represents [Figure] [Figure] [Figure] and wherein Y″represents a radical to be selected out of a group consisting of －H, －OH, －OR, －OR－OCH3, －NH2 and －NHR′; R represents an aliphatic hydrocarbon group; and R′represents an aliphatic hydrocarbon group or a phenyl group.