Patent US5409971A successfully refreshed from Google Patents.
US5409971A
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US
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Functionalized multistage polymers
Assignee: Rohm and Haas Co
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Filing: 1994-02-04
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Granted: 1995-04-25
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Expires: 2014-02-04
Abstract
Abstract An aqueous, radiation-curable, functionalized latex polymer composition and its preparation are disclosed. The composition is a multistaged latex polymer formed from a first stage polymer and a second stage polymer having alpha , beta -unsaturated carbonyl functionalization which permits curing by UV radiation. The composition dries tack-free before curing. The final cured UV coating has excellent solvent resistance, water resistance, stain resistance, direct impact resistance and hot print resistance. The composition is useful in coatings, adhesives, inks and leather coatings, and is particularly useful as a coating on wood. The multistaged latex polymer is made by (a) forming a multistage polymer having (1) a first stage polymer; and (2) a second stage polymer comprising at least one comonomer containing acid functionality; (b) partially neutralizing said acid functionality of said second stage polymer of said multistage polymer with a base; and (c) reacting said multistage polymer having partially neutralized acid functionality with a monoethylenically unsaturated epoxide compound.
Inventors
- 👤 Martha H. Wolfersberger
- 👤 Frederick J. Schindler
- 👤 Ronald S. Beckley
- 👤 Ronald W. Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:38
CPC Classifications
C; C09; C09D; C09D151/00; C09D151/06; C08; C08F; C08F265/00; C08F265/04; C08F265/06; C08F8/00; C08F8/02; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20; C08F2810/30; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
116 words
A radiation-curable, multistaged latex polymer composition, comprising: (a) a first stage polymer; and (b) a second stage polymer having α, β-unsaturated carbonyl functionality, wherein said second stage polymer is formed by the process of (i) forming a polymer comprising at least one comonomer containing acid functionality; (ii) partially neutralizing said acid functionality of said polymer with a base; and (iii) reacting said polymer having partially neutralized acid functionality with a monoethylenically unsaturated epoxide compound; and wherein the weight ratio of said first stage polymer to said second stage polymer is from about 20:80 to about 70:30 and wherein said latex polymer composition is radiation curable without the need for the addition of a separate multifunctional material.
Claim 2
Dependent Claim
116 words
A radiation-curable, multistaged latex polymer composition, comprising: (a) a first stage polymer; and (b) a second stage polymer having α, β-unsaturated carbonyl functionality, wherein said second stage polymer is formed by the process of (i) forming a polymer comprising at least one comonomer containing acid functionality; (ii) partially neutralizing said acid functionality of said polymer with a base; and (iii) reacting said polymer having partially neutralized acid functionality with a monoethylenically unsaturated epoxide compound; and wherein the weight ratio of said first stage polymer to said second stage polymer is from about 20:80 to about 70:30 and wherein said latex polymer composition is radiation curable without the need for the addition of a separate multifunctional material.
Claim 3
Dependent Claim
30 words
The radiation-curable, multistaged latex polymer composition of claim 1 wherein the weight ratio of said first stage polymer to said second stage polymer is from about 30:70 to about 50:50.
Claim 4
Dependent Claim
17 words
The radiation-curable, multistaged latex polymer composition of claim 1 wherein said second stage polymer contains (meth)acrylate functionality.
Claim 5
Dependent Claim
34 words
The radiation-curable, multistaged latex polymer composition of claim 1 wherein said first stage polymer is formed from less than about 10% by weight of the first stage polymer of at least one crosslinking comonomer.
Claim 6
Dependent Claim
30 words
The radiation-curable, multistaged latex polymer composition of claim 4 wherein said first stage polymer is formed from about 1% to about 5% by weight of at least one crosslinking comonomer.
Claim 7
Dependent Claim
16 words
The radiation-curable, multistaged latex polymer composition of claim 4 wherein said crosslinking comonomer is allyl methacrylate.
Claim 8
Dependent Claim
123 words
A coating composition, comprising: (a) water; and (b) a radiation-curable, multistaged latex polymer comprising: (1) a first stage polymer; and (2) a second stage polymer having α, β-unsaturated carbonyl functionality, wherein said second stage polymer is formed by the process of (i) forming a polymer comprising at least one comonomer containing acid functionality; (ii) partially neutralizing said acid functionality of said polymer with a base; and (iii) reacting said polymer having partially neutralized acid functionality with a monoethylenically unsaturated epoxide compound; and wherein the weight ratio of said first stage polymer to said second stage polymer is from about 20:80 to about 70:30 and wherein said latex polymer composition is radiation curable without the need for the addition of a separate multifunctional material.
Claim 9
Dependent Claim
123 words
A coating composition, comprising: (a) water; and (b) a radiation-curable, multistaged latex polymer comprising: (1) a first stage polymer; and (2) a second stage polymer having α, β-unsaturated carbonyl functionality, wherein said second stage polymer is formed by the process of (i) forming a polymer comprising at least one comonomer containing acid functionality; (ii) partially neutralizing said acid functionality of said polymer with a base; and (iii) reacting said polymer having partially neutralized acid functionality with a monoethylenically unsaturated epoxide compound; and wherein the weight ratio of said first stage polymer to said second stage polymer is from about 20:80 to about 70:30 and wherein said latex polymer composition is radiation curable without the need for the addition of a separate multifunctional material.
Claim 10
Dependent Claim
10 words
The coating composition of claim 7 further comprising an initiator.
Claim 11
Dependent Claim
27 words
The coating composition of claim 7 wherein the weight ratio of said first stage polymer to said second stage polymer is from about 30:70 to about 50:50.
Claim 12
Dependent Claim
14 words
The coating composition of claim 7 wherein said second stage polymer contains (meth)acrylate functionality.
Claim 13
Dependent Claim
31 words
The coating composition of claim 7 wherein said first stage polymer is formed from less than about 10% by weight of the first stage polymer of at least one crosslinking comonomer.
Claim 14
Dependent Claim
27 words
The coating composition of claim 11 wherein said first stage polymer is formed from about 1% to about 5% by weight of at least one crosslinking comonomer.
Claim 15
Dependent Claim
13 words
The coating composition of claim 9 wherein said crosslinking comonomer is allyl methacrylate.
Claim 16
Dependent Claim
10 words
A coating formed from the coating composition of claim 7.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-04-24 | 1998-10-24 | 1999-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-24 | 2002-10-24 | 2003-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-24 | 2006-10-24 | 2007-04-25 | $7700.00 | Window Closed / Lapsed |