Process for the preparation of high molecular weight polymeric antidegradants
AssigneeThe Goodyear Tire & Rubber Company
InventorsDane K. Parker, Donald J. Burlett
Life of this patent
Estimating the term…
Abstract
There is disclosed a process for the modification of a chloromethylated latex wherein said latex contains a surfactant of a nonionic or ionic-type comprising contacting said latex with an aqueous alkali solution and an alkali ionizable molecule containing antidegradant properties at a reaction temperature below 100.degree. C. and in the presence of a nitrogen atmosphere.
Claims20
A process for the modification of a halomethylated polymer latex wherein said latex comprises
- (a) 0 to 39.9 parts by weight of styrene,
- (b) 60 to 99.9 parts by weight of butadiene,
- (c) 0.1 to 40 parts by weight of vinylbenzyl chloride,
- (d) a surfactant wherein said surfactant is of the nonionic or ionic-type;
- comprising contacting said latex with an aqueous alkaline solution and an alkali ionizable molecule containing antidegradant properties selected from the group consisting of chain-breaking antidegradants, peroxide decomposing antidegradants, ultraviolet screening antidegradants, triplet quenching antidegradants and metal deactivation antidegradants at a reaction temperature not to exceed 100.degree. C. and in the presence of a nitrogen atmosphere.
A process for the modification of an elastomeric latex composition which contains from 0.1 to 40 parts by weight vinylbenzyl chloride and a surfactant of a non-ionic or ionic type, said process comprising contacting said latex with an aqueous alkali solution and an alkali ionizable molecule containing antidegradant properties selected from the group consisting of chain-breaking antidegradants, peroxide decomposing antidegradants, ultraviolet screening antidegradants, triplet quenching antidegradants and metal de-activation antidegradants at a temperature below 100.degree. C. and in the presence of a nitrogen atmosphere.
A polymeric latex prepared by a process comprising the steps of contacting a elastomeric latex composition which contains from 0.1 to 40 parts by weight vinylbenzyl chloride polymer latex wherein said latex comprises
- (1) 0 to 39.9 parts by weight of styrene,
- (2) 60 to 99.9 parts by weight of butadiene,
- (3) 0.1 to 40 parts by weight of a monomer having a vinyl group and a chloro-benzyl group,
- (4) a surfactant wherein said surfactant is of the nonionic or ionic type;
- with an aqueous alkaline solution and an alkali ionizable molecule containing antidegradant properties at a temperature not to exceed 100.degree. C. and in the presence of a nitrogen atmosphere.
Dependencies are inferred from the claim text.