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US 9,751,972 B2Granted
Thermally stable biuret and isocyanurate based surface modifying macromolecules and uses thereof
AssigneeInterface Biologic Inc.
InventorsSanjoy Mullick, Weilun Chang, Alexandra Piotrowicz, Jeannette Ho, Richard Witmeyer
Life of this patent
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Abstract
The invention relates to surface modifying macromolecules (SMMs) having high degradation temperatures and their use in the manufacture of articles made from base polymers which require high temperature processing. The surface modifier is admixed with the base polymer to impart alcohol and water repellency properties.
Claims18
An admixture comprising a base polymer and a surface modifier of formula (I) or (II):
- wherein
- (i) A is a soft segment;
- (ii) B is a hard segment, and B′, when present, is a hard segment comprising a urethane;
- and
- (iii) each G is a surface active group comprising polyfluoroalkyl;
- (iv) n is an integer from 0 to 10;
- wherein said surface modifier has a thermal degradation temperature of at least 290° C. and a theoretical molecular weight of less than 10,000 Daltons;
- wherein said admixture is formed by melt-processing said base polymer with said surface modifier;
- and wherein:
- (a) A is diethylene glycol-orthophthalic anhydride polyester, and B is formed from isophorone diisocyanate (IPDI) trimer;
- (b) A is polytetramethylene oxide, and B is formed from isophorone diisocyanate (IPDI) trimer;
- (c) A is poly(diethylene glycol)adipate, and B is formed from isophorone diisocyanate (IPDI) trimer;
- (d) A is poly(hexamethylene carbonate), and B is formed from isophorone diisocyanate (IPDI) trimer;
- (e) A is poly(ethyleneglycol)-block-poly(propyleneglycol))-block-poly(ethylene glycol), and B is formed from isophorone diisocyanate (IPDI) trimer;
- (f) A is hydrogenated polybutadiene, and B is formed from isophorone diisocyanate (IPDI) trimer;
- (g) A is hydrogenated polybutadiene, and B is formed from hexamethylene diisocyanate (HDI) trimer;
- or
- (h) A is hydrogenated polyisoprene, and B is formed from isophorone diisocyanate (IPDI) trimer.
15 more elements
A surface modifier of formula (I) or (II):
- wherein
- A is formed from 1,12-dodecane diol (DDD),
- B is formed from isophorone diisocyanate (IPDI) trimer,
- each G is a surface active group comprising polyfluoroalkyl, and
- n is an integer from 0 to 10;
- wherein said surface modifier has a thermal degradation temperature of at least 270° C. and a theoretical molecular weight of less than 10,000 Daltons.
3 more elements
Dependencies are inferred from the claim text.