Epoxy-Fortified Floor Polishes with Segmented Curing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing aqueous coating compositions for floors lack durability, despite the use of transition metal ions and epoxy resins, as they do not effectively address the need for improved long-term performance and removability.
Innovation Solution
An aqueous coating composition comprising an aromatic-acrylic polymer, a reactive polyfunctional thermosetting resin, a polyvalent metal ion, and a polyfunctional curing agent, where the curing agent is stored separately, is applied to the substrate, enhancing crosslinking and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transition metal ions and epoxy resins are used in aqueous coating compositions, then crosslinking is added to improve durability, but the long-term performance and removability are not effectively improved
Solution Approach 1:
The patent divides the coating system into two separate components: a polymer emulsion containing metal ions and an epoxy resin solution containing the curing agent. This segmentation allows the coating to maintain durability through crosslinking while enabling removability by controlling when and how the curing reaction occurs. The two components can be applied separately or combined, and the curing process can be controlled to achieve desired performance characteristics.
Solution Approach 2:
The patent incorporates metal ions (such as zinc, calcium, or aluminum) into the polymer emulsion during the emulsion polymerization process, before the coating is applied. This preliminary incorporation ensures that the metal ions are uniformly distributed and readily available to catalyze the epoxy curing reaction when the coating is applied and exposed to moisture or heat, thereby improving durability without compromising removability.
2Strength
If epoxy resin is used as an additional component in aqueous coating compositions, then crosslinking is enhanced, but the coating stability during storage is compromised
Solution Approach 1:
The patent separates the epoxy resin and curing agent into different components: the epoxy resin is incorporated into the polymer emulsion, while the curing agent is placed in a separate epoxy resin solution. This segmentation prevents premature curing reactions during storage, maintaining coating stability, while still enabling enhanced crosslinking when the components are combined and applied to the substrate.
Solution Approach 2:
The patent uses an aqueous medium as an intermediary to stabilize both the polymer emulsion containing metal ions and the epoxy resin solution containing the curing agent. The aqueous environment prevents direct interaction between the epoxy resin and curing agent during storage, thereby preventing premature crosslinking and maintaining composition stability, while still allowing the curing reaction to proceed when the components are combined.
3Ease of manufacture
If acidic functionality in the acrylic polymer is used to cure the epoxy resin, then the epoxy curing is achieved, but the floor finish durability is insufficient
Solution Approach 1:
The patent changes the curing mechanism from relying solely on acidic functionality in the acrylic polymer to using metal ions (such as zinc, calcium, or aluminum) incorporated into the polymer emulsion. These metal ions catalyze the epoxy curing reaction more effectively, providing enhanced crosslinking and improved floor finish durability while maintaining ease of manufacture through a similar curing process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition achieves improved durability and removability of the floor finish, with increased pencil hardness and stable performance over multiple coating and drying steps, comparable to conventional zinc-based systems but with enhanced durability and fast tack-free times.
Implementation Method 1
an aromatic-acrylic polymer comprising from 3 to 11 wt % polymerized units of C3-C6 carboxylic acid monomers and from 0.2 to 3 wt % polymerized units of anti-agglomerating monomers
Implementation Method 2
polymerized units of C3-C6 carboxylic acid monomers
Implementation Method 3
a reactive polyfunctional thermosetting resin; (c) a polyvalent metal ion
Implementation Method 4
a polyvalent metal ion
Implementation Method 5
a polyfunctional curing agent, wherein the curing agent is stored separately from the thermosetting resin
Data Source
AI summary
An aqueous composition comprising: (a) an aromatic-acrylic polymer comprising from 3 to 11 wt % polymerized units of C3-C6 carboxylic acid monomers and from 0.2 to 3 wt % polymerized units of anti-agglomerating monomers; (b) a reactive polyfunctional thermosetting resin; (c) a polyvalent metal ion; and (d) a polyfunctional curing agent, wherein the curing agent is stored separately from the thermosetting resin.