Back to results
US 6,555,615 B2Granted
Removable coating composition and preparative method
AssigneeRohm and Haas Company
InventorPaul Ralph Van Rheenen
Life of this patent
Estimating the term…
Abstract
The invention relates to a removable coating and a method for preparing that removable coating. The method comprises applying to a surface of a substrate a removable coating composition including an aqueous dispersion of film forming polymer and amphoteric surfactant having isoelectric point at pH=3 to pH=8.
Claims14
A peelable coating composition, comprising:
- a. an aqueous dispersion of at least one polymer,
- wherein said polymer has a Tg of greater than 0° C. to 40° C.;
- b. at least one amphoteric release agent having an isoelectric point at pH 3 to pH 8;
- c. greater than 0.20 moles/100 grams of said polymer to 2.00 moles/100 grams of said polymer of at least one base capable of maintaining said coating composition from pH 8 to pH 11;
- and
- d. optionally, at least one polyvalent metal cation;
- wherein the sum of the amounts of said base and said polyvalent metal cation is greater than 0.20 moles/100 grams of said polymer to 2.00 moles/100 grams of said polymer.
4 more elements
A peelable coating composition, comprising:
- a. an aqueous dispersion of at least one polymer,
- wherein said polymer:
- i. has a Tg of −60° C. to 0° C.;
- and
- ii. comprises, as polymerized units, 0.1 to 6% by weight, based on the total weight of said polymer, of at least one carboxy functional monomer;
- b. at least one amphoteric release agent having an isoelectric point at pH 3 to pH 8;
- c. greater than 0.20 moles/100 grams polymer to 2.00 moles/100 grams polymer of at least one base capable of maintaining said coating composition from pH 8 to pH 11;
- and
- d. at least one polyvalent metal cation;
- wherein the sum of the amounts of said base and said polyvalent metal cation is greater than 0.20 moles/100 grams of said polymer to 2.00 moles/100 grams of said polymer.
7 more elements
A peelable coating composition, comprising:
- a. an aqueous dispersion of at least one polymer,
- wherein said polymer has a Tg of greater than 0° C. to 40° C.;
- and
- b. at least one amphoteric release agent having an isoelectric point at pH 3 to pH 8;
- wherein said peelable coating composition is substantially free of said base and said polyvalent metal cation.
2 more elements
A method of preparing a peelable coating, comprising the steps of:
- (1) applying to the surface of a substrate a coating composition comprising:
- a. an aqueous dispersion of at least one polymer,
- wherein said polymer has a Tg of greater than 0° C. to 40° C.;
- b. at least one amphoteric release agent having an isoelectric point at pH 3 to pH 8;
- c. greater than 0.20 moles/100 grams polymer to 2.00 moles/100 grams polymer of at least one base capable of maintaining said coating composition from pH 8 to pH 11;
- and
- d. optionally, at least one polyvalent metal cation;
- wherein the sum of the amounts of said base and said polyvalent metal cation is greater than 0.20 moles/100 grams of said polymer to 2.00 moles/100 grams of said polymer;
- and
- (2) permitting said coating composition to dry.
7 more elements
A method of preparing a peelable coating, comprising the steps of:
- (1) applying to the surface of a substrate a coating composition comprising:
- a. an aqueous dispersion of at least one polymer,
- wherein said polymer:
- i. has a Tg of −60° C. to 0° C.;
- and
- ii. comprises, as polymerized units, 0.1 to 6% by weight, based on the total weight of said polymer, of at least one carboxy functional monomer;
- b. at least one amphoteric release agent having an isoelectric point at pH 3 to pH 8;
- c. greater than 0.20 moles/100 grams polymer to 2.00 moles/100 grams polymer of at least one base capable of maintaining said coating composition from pH 8 to pH 11;
- and
- d. at least one polyvalent metal cation;
- wherein the sum of the amounts of said base and said polyvalent metal cation is greater than 0.20 moles/100 grams of said polymer to 2.00 moles/100 grams of said polymer;
- and
- (2) permitting said coating composition to dry.
10 more elements
A method of preparing a peelable coating, comprising the steps of:
- (1) applying to the surface of a substrate a coating composition comprising:
- a. an aqueous dispersion of at least one polymer,
- wherein said polymer has a Tg of greater than 0° C. to 40° C.;
- and
- b. at least one amphoteric release agent having an isoelectric point at pH 3 to pH 8;
- wherein said coating composition is substantially free of said base and said polyvalent metal cation;
- and
- (2) permitting said coating composition to dry.
5 more elements
Dependencies are inferred from the claim text.