# US 11,441,057 B2 · Autobody repair formulation with improved control of work time and cure time at extreme ambient air temperatures

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,441,057 B2
- Document ID: US11441057B2
- Status: Granted
- Kind: B2
- Application number: 16/745,421
- Filed: 2020-01-17
- Published: 2020-05-14
- Granted: 2022-09-13
- Earliest claimed: 2016-12-12
- Assignees: Illinois Tool Works Inc.
- Applicants: Illinois Tool Works Inc.
- Inventors: Helena Twardowska; Robert Mark Adams; David McKinney
- Web page: https://patentgrep.com/patent/US11441057B2

## CPC

- C09J 167/06: Unsaturated polyesters having carbon-to-carbon unsaturation
- B05D 3/0413: {Heating with air}
- B05D 3/0426: {Cooling with air}
- B05D 7/14: to metal, e.g. car bodies (involving a chemical reaction between the metal and the coating C23)
- C09D 5/34: Filling pastes (materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12)
- C09D 7/65: macromolecular (C09D7/41-C09D7/48 take precedence)
- C09D 167/06: Unsaturated polyesters having carbon-to-carbon unsaturation
- C09J 167/00: Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain (based on polyester-amides C09J177/12; based on polyester-imides C09J179/08); Adhesives based on derivatives of such polymers
- C08K 3/22: of metals
- C08K 3/26: Carbonates; Bicarbonates
- C08K 3/34: Silicon-containing compounds
- C08K 3/346: {Clay}
- C08K 5/01: Hydrocarbons {(C08K5/0091 takes precedence)}
- C08K 2003/2241: {Titanium dioxide}
- C08K 2003/265: {Calcium, strontium or barium carbonate}
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

An Additive Package is provided to adjust the cure properties of a two-part bonding filler across a temperature range of from 4 and 44 degrees Celsius. A low temperature additive speeds a cure rate between 4 and 15 degrees Celsius and a high temperature additive slows down a cure rate between 25 and 44 degrees Celsius. The amount of Additive Package is varied to account for the desired cure properties. The Additive Package includes a first unsaturated polyester resins with an average degree of unsaturation of 70-100 percent based on total acid and anhydride monomer content. A process for repairing a vehicle body is provided using the Additive Package. A kit for accomplishing repairs in an after-market repair setting is also provided.

## Claims

### Claim 1

A curable vehicle body repair Additive Package formulation to compensate for a cure temperature of a Part A that includes a polyester resin, where the additive package formulation is adapted to be kneaded into a Part A in an amount of 10-60 wt %, and then mixing with a common Part B, the additive package comprising:
a first polyester resin having an average degree of unsaturation of between 70 and 100 molar percent based on total acid and anhydride monomer content and has a higher degree of unsaturation than the polyester resin in Part A;
a second polyester resin reacted with a fatty acid;
a monomer reactive diluent in which said first polyester resin and second polyester resin are dissolved or suspended; and
a cure promoter selected from metal-amine complexes, tertiary amines, or a combination thereof;
wherein said cure promoter is present in an amount of 0.5 to 3 wt % of the additive package for curing Part A at the cure temperature of between 4 and 21 degrees Celsius, or
wherein said cure promoter is present in an amount of 0.03 to 0.5 wt % of the additive package for curing Part A at a cure temperature of between 24 and 44 degrees Celsius.

### Claim 2 (depends on 1)

The formulation of claim 1 wherein said cure promoter is only said tertiary amine.

### Claim 3 (depends on 1)

The formulation of claim 1 wherein said first or second polyester resin is a terephthalic resin.

### Claim 4 (depends on 1)

The formulation of claim 1 wherein the formulation is independent of a cure catalyst.

### Claim 5 (depends on 1)

The formulation of claim 1 further comprising at least one of: an inhibitor, a thixotropic material, and a talc.

### Claim 6 (depends on 1)

The formulation of claim 1 further comprising microspheroids.

### Claim 7 (depends on 1)

The formulation of claim 1 further comprising one of a high temperature cure-denoting colorant and a low temperature cure-denoting colorant.