Unlock instant, AI-driven research and patent intelligence for your innovation.

Activatable polymer composition comprising at least two carboxylic acids as blowing agents

A polymer and composition technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problem of difficult to meet the expansion activation temperature of baffles or reinforcing elements, unpleasant odor, poor decomposition gas volume, release toxic /Reactive gases etc.

Active Publication Date: 2022-05-03
ZEPHYROS INC
View PDF43 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these compounds are only useful in limited applications as they suffer from poor decomposition gas volumes, release of toxic / reactive gases (e.g. formaldehyde), or require difficult to meet expansion activation of baffles or reinforcement elements in automotive manufacturing temperature
In addition, it was additionally observed that when conventional chemical blowing agents decompose, malodorous substances are released as by-products, causing unpleasant odors

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Activatable polymer composition comprising at least two carboxylic acids as blowing agents
  • Activatable polymer composition comprising at least two carboxylic acids as blowing agents
  • Activatable polymer composition comprising at least two carboxylic acids as blowing agents

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0261] Example 1 - Volume Expansion:

[0262] Use this method to measure volume expansion:

[0263] - Cut in material with at least 3 samples of dimensions 25 x 25 x 3mm

[0264] - Determine the uncured material volume V1 by obtaining its weight in air and water using a specific gravity balance.

[0265] - log results

[0266] - Bake the uncured material as specified (30 minutes at 165°C)

[0267] - Determination of material volume V2 by obtaining its weight in air and water using a specific gravity balance

[0268] - log results

[0269] - Use the equation: [(V 2 –V 1 ) / V 1 ]×100 to get % volume change

[0270] - Calculate the average of the volume expansion of the three samples

[0271] Prepare a standard recipe containing the following components:

[0272]

[0273] Thus, the standard formulation contains neither blowing agent, nor blowing agent accelerator, nor free radical polymerization initiator.

[0274] In an alternative embodiment, a random terpolymer ...

Embodiment 2

[0285] Example 2 - Curing:

[0286] Measurements were performed using a planar rheometer. The measuring system has a diameter of 25 mm and a gap of 0.88 mm. A normal force of 0.1 N and a strain of 1% amplitude at a frequency of 1 Hz were applied. The temperature was changed between 70°C and 165°C at a rate of 20°C / min.

[0287] figure 1 and 2 The evolution of the storage modulus G' and the loss modulus G" with temperature is shown. The G' and G" curves have two intersection points in both figures: the first intersection point is at about 90°C, where the material transitions from solid to molten state (G" is higher than G'). The second intersection point is at about 150°C and is related to the gel point. At this point, the material has crosslinked and behaves as a solid.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The present invention relates to curable, volume expandable polymer compositions comprising an organic acid component, wherein the organic acid component comprises a first organic acid, a second organic acid and optionally one or more additional organic acids; wherein the polymer composition undergoes volume expansion when heated to an expansion activation temperature above room temperature. When the organic acid component is heated to the expansion activation temperature, the first organic acid, and / or the second organic acid, and / or the optional one or more additional organic acids are decarboxylated, thereby releasing carbon dioxide. The carbon dioxide thus released is captured by the polymer composition, causing the polymer composition to undergo volume expansion.

Description

technical field [0001] The present invention relates to curable, volume expandable polymer compositions comprising an organic acid component comprising a first organic acid, a second organic acid, and optionally one or more additional organic acids ; wherein the polymer composition undergoes volume expansion when heated to an expansion activation temperature above room temperature. When the organic acid component is heated to the expansion activation temperature, the first organic acid, and / or the second organic acid, and / or the optional one or more additional organic acids are decarboxylated, thereby releasing carbon dioxide. The carbon dioxide thus released is captured by the polymer composition, causing the polymer composition to undergo volume expansion. Background technique [0002] Thermally expandable polymer compositions comprising blowing agents that decompose in a controlled manner with gas release under defined high temperature conditions are useful tools for man...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/08
CPCC08J9/0061C08J9/08C08J2201/026C08J2203/02C08J2203/18C08J2207/02C08J2323/08C08J2331/04C08J2333/06C08J2423/08C08J2431/04C08J2433/06C08J2203/20C09J11/04C09J11/06C09J11/08C09J123/0853C09J129/14C09J2400/24C08J2333/08C08J9/142C08K5/092C08K5/09C08J2433/10C08J2433/08C08J2433/12C08J2333/14C08J2433/14C08J2333/10C08J2333/12
Inventor R·拉默L·里歇尔T·德瓦纳
Owner ZEPHYROS INC