Polymer compositions and products formed therewith
AssigneeChurch & Dwight Co., Inc.
InventorsMuthiah Thiyagarajan, Rajesh Ranjan, Carmen Guzman, Jon Toliver, Steven T. Adamy
Life of this patent
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Abstract
The present disclosure provides compositions and products formed therefrom. In particular, the disclosure provides elastomeric latex articles, such as gloves and condoms, that can be prepared utilizing a styrene-polyisoprene-styrene (SIS) latex. The elastomeric articles can exhibit desired tensile properties while being substantially or completely free of undesired components, such as sulfur and zinc oxide, which can be allergens. The disclosure further provides methods of preparing elastomeric latex articles.
Claims16
A method for preparing an elastomeric article, the method comprising:
- preparing a compounded latex composition including a polystyrene-polyisoprene-polystyrene (SIS) latex, at least one sulfur donor, and at least one dithiocarbamate;
- prevulcanizing the compounded latex composition at a temperature and for a time period effective to form a prevulcanized compounded latex composition having a relaxed modulus of about 0.50 MPa to about 0.61 MPa;
- dipping a former into the prevulcanized compounded latex composition to form at least one layer of the prevulcanized compounded latex composition thereon;
- and
- curing the at least one layer of the prevulcanized compounded latex composition on the former to provide the elastomeric article.
Dependencies are inferred from the claim text.