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US 6,914,091 B2Granted
Compositions comprising hydrogenated block copolymers and end-use applications thereof
AssigneeThe Dow Chemical Company
InventorsRobert J. Donald, Stephen F. Hahn, James E. Pate, III
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Abstract
Flexible hydrogenated block copolymers can be successfully used in a variety of applications including films, profiles, sheets, coatings, injection molded articles, blow or rotational molded articles and pultruded articles.
Claims7
An emulsion or dispersion comprising:
- I′) a dispersed polymer phase comprising at least one hydrogenated block copolymer which comprises at least two distinct blocks of hydrogenated vinyl aromatic polymer, and at least one block of hydrogenated conjugated diene polymer, wherein the hydrogenated copolymer is further characterized by:
- a) a weight ratio of hydrogenated conjugated diene polymer block to hydrogenated vinyl aromatic polymer block of greater than 40:60;
- b) a total number average molecular weight (Mnt) of from 30,000 to 150,000, wherein each hydrogenated vinyl aromatic polymer block (A) has a Mna of from 5,000 to 45,000 and each hydrogenated conjugated diene polymer block (B) has a Mnb of from 12,000 to 110,000;
- and
- c) a hydrogenation level such that each hydrogenated vinyl aromatic polymer block has a hydrogenation level of greater than 90 percent and each hydrogenated conjugated diene polymer block has a hydrogenation level of greater than 95 percent,
- II′) a surfactant, and
- III′) a continuous phase which is immiscible with the polymer phase.
4 more elements
Dependencies are inferred from the claim text.