Bio-renewable sequential vinyl polymer

摘要

An aqueous polymer dispersion comprising a vinyl polymer with at least two phases comprising: A) 40 to 90 wt % of a vinyl polymer A having a glass transition temperature in the range of from −50 to 30° C.; and B) 10 to 60 wt % of a vinyl polymer B having a glass transition temperature the range of from 50 to 130° C.; wherein vinyl polymer A comprises 0.1 to 10 wt % of at least one acid-functional olefinically unsaturated monomer, wherein at least 20 wt % of the monomer composition used to form vinyl polymer A and vinyl polymer B is derived from at least one bio-renewable olefinically unsaturated monomer.

主权项

1. An aqueous polymer dispersion having a minimum film forming temperature below 50° C. comprising a vinyl polymer derived from olefinically unsaturated monomers, with at least two phases comprising:
A) 40 to 90 wt % of a vinyl polymer A having a glass transition temperature in the range of from −50 to 30° C.; and B) 10 to 60 wt % of a vinyl polymer B having a glass transition temperature the range of from 50 to 130 ° C.; wherein at least 10% by weight of a total amount of monomer used to form the vinyl polymer A and the vinyl polymer B is derived from at least one bio-renewable olefinically unsaturated monomer that imparts a carbon-14 content to the vinyl polymer A and/or the vinyl polymer B of at least about 1.5 dpm/gC of carbon-14; and wherein the weight percentage of monomers in the vinyl polymer A and the vinyl polymer B are calculated based on a total amount of olefinically unsaturated monomers used to prepare the vinyl polymer A and the vinyl polymer B being 100%; and wherein the vinyl polymer A comprises 0.1 to 10 wt % of at least one acid-functional olefinically unsaturated monomer where the weight percentage of the at least one acid-functional monomer is calculated based on a total amount of the olefinically unsaturated monomer used to prepare the vinyl polymer A being 100%.