Aqueous application systems for applying additives to polymeric particles, methods of preparing aqueous emulsions which include additives having a high melting point, additives having a low melting point and an emulsifiable wax. Also disclosed are methods of applying additives to polymeric particles and to polymeric particles treated by such methods.
This is a divisional of application Ser. No. 827,042 filed on February 7, 1986, which is a continuation-in-part of application Ser. No. 701,888 filed on Feb. 15, 1985, now abandoned.
A conjugated diene polymer composition comprising: (a) 100 parts by weight of a non-coupling conjugated diene polymer consisting of at least one conjugated diene or a non-coupling random copolymer consisting of a conjugated diene and at least one monovinyl aromatic compound, (b) 0.03 to 0.2 parts by weight of a sulfur-containing phenol type antioxidant represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.3 are --CH.sub.2 --S--R.sub.5 in which each R.sub.5 represents independently an alkyl group having 2 to 18 carbon atoms; R.sub.2 represents hydrogen or a methyl group; and R.sub.4 represents an alkyl group having 1 to 8 carbon atoms, and (c) 0.03 to 0.2 parts by weight of a phenol type antioxidant represented by the following general formula (II): ##STR2## wherein R.sub.6 represents a tert-butyl group and R.sub.7 represents an alkyl group having 2 to 22 carbon atoms.
Solid form additive systems which are dispersible in aqueous media are disclosed, as are methods for preparing such additive systems and methods for dispersing such additive systems in aqueous media. Also disclosed are methods for applying additives to polymeric particles and the polymeric particles treated by such methods. These polymeric particles can be made into articles that can be used in a wide range of applications, e.g., as film or packaging for food, medicine and the like.
Aqueous application systems for applying additives to polymeric particles, methods of preparing aqueous emulsions which include additives having a high melting point, additives having a low melting point and an emulsifiable wax. Also disclosed are methods of applying additives to polymeric particles and to polymeric particles treated by such methods.
Solid form additive systems which are dispersible in aqueous media are disclosed, as are methods for preparing such additive systems. The additive systems are dry, free-flowing particulate materials that contain at least one additive component, at least one tackifying agent, and at least one surfactant.
This invention relates to a continuous process for incorporating additives into or onto polymer granules by high speed/high intensity mixing of entrained polymer granules and additive particles, wherein the additive is provided in the form of an additive dispersion.
