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US 2024/0141142 A1Published application
Poly(vinyl butyral) compositions for use with solar additives
AssigneeSolutia Inc.
InventorBRUCE EDWARD WADE
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Abstract
Provided are certain poly(vinyl acetal) compositions useful in safety glass construction. The compositions of the invention can be extruded into sheets and serve as interlayers between glass panels. In particular, the compositions comprise one or more solar additives and a divalent magnesium ion and at least 2 carboxylate groups wherein the corresponding carboxylic acids of the carboxylate groups each have a pKa of less than about 4.80. The respective magnesium salts used as adhesion control agents may be hydrates.
Claims20
A polymer composition comprising:
- a. poly(vinyl acetal) resin;
- b. a solar additive;
- c. sodium and/or potassium acetate;
- d. at least one plasticizer;
- and
- e. a magnesium salt comprising a divalent magnesium ion and at least 2 carboxylate groups wherein the corresponding carboxylic acids of the carboxylate groups each have a pKa of less than about 4.80, wherein the titer of magnesium salt or hydrate thereof is from about 10 to about 60, wherein the alkalinity titer attributable to the combination of potassium and sodium acetate is from about 10 to about 60, and wherein the ratio of the titer of magnesium salt or hydrate thereof to the alkalinity titer attributable to the combination of potassium and sodium acetate is about 0.5 to about 2.0.
3 more elements
A polymer composition comprising:
- a. poly(vinyl acetal) resin having a moisture level of less than about 1 wt. %;
- b. a solar additive;
- c. sodium and/or potassium acetate;
- d. at least one plasticizer;
- and
- e. magnesium salt comprising a divalent magnesium ion and at least 2 carboxylate groups wherein the corresponding carboxylic acids of the carboxylate groups each have a pKa of less than about 4.80, wherein the titer of magnesium salt or hydrate thereof is from about 10 to about 60, wherein the alkalinity titer attributable to the combination of potassium and sodium acetate is from about 10 to about 60, and wherein the ratio of the titer of magnesium salt or hydrate thereof to the alkalinity titer attributable to the combination of potassium and sodium acetate is about 0.5 to about 2.0,
- wherein the level of binding is less than about 25%.
4 more elements
Dependencies are inferred from the claim text.