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Alternating copolymers of isobutylene type monomers

A technology of copolymers and monomers, applied in the direction of coating, etc., can solve problems such as toxicity, poor stability, and discoloration of coatings

Inactive Publication Date: 2007-03-21
PPG IND OHIO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, some Lewis acids and transition metals are toxic and would have adverse environmental effects if they were leached out of the copolymer and into the environment
Second, in coating applications, Lewis acids and transition metals can cause poor stability or simply discoloration of the coating when the coating is exposed to UV light
In addition, Lewis acids and transition metals can react with other ingredients in the paint formulation leading to undesirable properties such as reduced shelf life of a given paint formulation

Method used

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  • Alternating copolymers of isobutylene type monomers
  • Alternating copolymers of isobutylene type monomers
  • Alternating copolymers of isobutylene type monomers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-A

[0183] Synthesis of alternating copolymer diisobutylene / methyl methacrylate-alternating-hydroxypropyl acrylate / butyl acrylate. Polymerization was performed using the ingredients in Table 3 below.

[0184] table 3

[0185] Element

[0186] Feedstock 1 was added to a 4 liter stirred stainless steel pressure reactor. The reactor was then pressurized with nitrogen to provide a 5 psig blanket over the reactor. The stirring on the reactor was 500 rpm and the reactor temperature was adjusted to 125°C. Feedstock 2 was added to the reactor at a rate of 9.62 grams / hour over a period of 3.5 hours. Fifteen minutes after starting feed 2, feed 3 was added to the reactor at an addition rate of 262.10 g / hr over a period of 3 hours. During the monomer addition, the temperature was maintained at 125°C, 40 PSI. After the addition of starting material 2 and starting material 3 was complete, the reaction mixture was allowed to stand for 2 hours. The reactor was then cooled to 25...

Embodiment 1-B

[0188] Synthesis of alternating copolymer diisobutylene-alternating-hydroxypropyl acrylate / butyl acrylate. Polymerization was carried out in isopropanol solvent using the ingredients in Table 4 below.

[0189] Element

[0190] Feedstock 1 was added to a 4 liter stirred stainless steel pressure reactor. The reactor was pressurized with nitrogen to provide a 5 psig blanket over the reactor. The stirring on the reactor was set to 500 rpm and the reactor temperature was adjusted to 150°C. Feedstock 2 was added to the reactor at an addition rate of 48 grams / hour over a period of 2.5 hours. After 15 minutes, feedstock 3 was added to the reactor at an addition rate of 250 grams / hour over a period of 2 hours. During the monomer addition, the temperature was maintained at 150°C and 100 PSI. After feedstock 2 and feedstock 3 were added to the reactor, the reaction mixture was left for 2 hours. The reactor was then cooled to 25°C and vented. GC analysis of the reaction...

Embodiment 1-C

[0192] Synthesis of alternating copolymer diisobutylene-alternating-hydroxyethyl acrylate / butyl acrylate. Polymerization was carried out in isopropanol solvent using the ingredients in Table 5 below.

[0193] Element

[0194] Feedstock 1 was added to a 4 liter stirred stainless steel pressure reactor. The reactor was then pressurized with nitrogen to provide a 5 psig blanket over the reactor. The stirring on the reactor was set to 500 rpm and the reactor temperature was adjusted to 150°C. Feedstock 2 was added to the reactor at an addition rate of 48 grams / hour over a period of 2.5 hours. After 15 minutes, feedstock 3 was added to the reactor at an addition rate of 250 grams / hour over a period of 2 hours. During the monomer addition, the temperature was maintained at 150°C and 100 PSI. After feedstock 2 and feedstock 3 were added to the reactor, the reaction mixture was left for 2 hours. The reactor was then cooled to 25°C and vented. GC analysis of the reac...

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Abstract

A copolymer composition that includes a copolymer comprised of at least 30 mol % of residues having the following alternating residues from a donor monomer and from an acceptor monomer. The copolymer contains at least 15 mol % of an isobutylene type donor monomer and at least 15 mol % of an acrylic monomer as an acceptor monomer. The copolymer is substantially free of maleate or fumarate monomer segments and the copolymer composition is substantially free of Lewis acids and transition metals. Also disclosed is a thermosetting composition that includes a reactant comprising functional groups, a crosslinking agent having at least two functional groups that are reactive with the functional groups first reactant, and a copolymer flow control agent that includes the copolymer composition as well as substrates coated with the thermosetting composition.

Description

1. Technical field [0001] The present invention generally relates to copolymers of vinyl monomers. More particularly, the present invention relates to copolymers containing isobutylene-type monomers and their use as flow control agents in thermosetting coating compositions. 2. Background technology [0002] It is often observed that monomers that do not readily homopolymerize are capable of rapid copolymerization with each other. The most typical case occurs when strong electron-donating monomers are mixed with strong electron-accepting monomers, from which regular alternating copolymers are produced after radical initiation. Maleic anhydride is a widely used example of a strong electron accepting monomer. Styrene and vinyl ether are typical examples of electron donating monomers. Systems, such as maleic anhydride-styrene, are known to form charge transfer complexes that tend to place monomers in alternating sequences prior to initiation. Ordered monomers are "tied" toge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/12C08F210/10C08F220/00C08L23/22C08L33/04C09D123/22C08F8/00C08F210/00C09D157/00C09D201/02
CPCC09D201/02C08F8/00C08F10/00C08F20/00C08F290/14C08J5/18C08F220/18
Inventor S·科卡E·R·科尔里奇G·J·科勒姆J·B·奥德怀尔J·E·普尔V·A·特雷特尔
Owner PPG IND OHIO INC
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