Silicone and ionically modified isocyanate adduct
OwnerA. Andrew Shoresinventor
Life of this patent
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Abstract
An isocyanate adduct comprising the reaction product of a composition comprising in admixture a polyisocyanate, a silicone having dimethylsiloxane segments containing one or more of an isocyanate-reactive group bonded to said segments through an intermediate organic group, a reactant containing one or more of an isocyanate-reactive group, and one or more acid group or amine group, optionally an organic substance having one or more isocyanate-reactive groups, and compound providing counterion for said acid or amine group, wherein either the silicone, or the reactant, or both, have a single isocyanate-reactive group.
Claims24
Reaction-product comprising an isocyanate adduct of a composition comprising in admixture:
- A. Polyisocyanate,
- B. Silicone having dimethylsiloxane segments and one or more isocyanate-reactive group bonded to said segment through intermediate organic group,
- C. Reactant with one or more isocyanate-reactive group, and one or more acid group or anune group,
- D. Optionally organic substance having one or more isocyanate-reactive groups, and
- E. Compound providing counterion for said acid or amine group,
- Wherein either silicone B, or reactant C, or both, have single isocyanate-reactive group, and wherein said reaction-product can be dissolved at concentration greater than 40% and up to about 65%.
Process for manufacturing a pressure sensitive adhesive-coated product comprising the steps of:
- i. Providing the reaction product of a composition comprising in admixture:
- A. Polyisocyanate,
- B. Silicone having dimethylsiloxane segments and one or more isocyanate-reactive group bonded to said segment through intermediate divalent organic group,
- C. Reactant with one or more isocyanate-reactive group and one or more acid or amine groups, and optionally
- D. Organic substance having one or more isocyanate-reactive groups,
- Wherein either silicone B, or reactant C, or both, have single isocyanate-reactive group,
- ii. Reacting said acid or amine group with a compound providing counterion,
- iii. Mixing with water,
- iv. Coating a substrate with the mix in iii and removing water by heat, and
- v. Coating with a pressure sensitive adhesive.
Reaction product of a composition comprising in admixture:
- A. Polyisocyanate,
- B. Silicone with dimethylsioxane segment having one or more isocyanate-reactive group and one or more ion-forming acid group or tertiary amine group, wherein said groups are bonded to said segment through an intermediate organic group, and
- C. Compound providing counterion for said ion-forming acid or amine group.
Pressure sensitive adhesive-coated product comprising the reaction-product of a composition comprising in admixture:
- A. Polyisocyanate,
- B. Silicone having dimethylsiloxane segments and one or more isocyanate-reactive group bonded to said segment through intermediate divalent organic group,
- C. Reactant with one or more isocyanate-reactive group and one or more acid or amine groups, and optionally
- D. Organic substance having one or more isocyanate-reactive groups,
- Wherein either silicone B, or reactant C, or both, have single isocyanate-reactive group.
Dependencies are inferred from the claim text.