US3940537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous mats
Assignee: Zeneca Inc
•
Filing: 1973-07-12
•
Granted: 1976-02-24
•
Expires: 1993-07-12
Abstract
Abstract Fibrous mats which are insoluble in styrene are disclosed. The mats comprise a fibrous material and a binder resin which is the reaction product of (a) a first monomer selected from the group consisting of styrene, lower alkyl acrylates, lower alkyl methacrylates, lower alkyl itaconates, lower alkyl maleates, lower alkyl fumarates, vinyl esters, and vinyl chloride; (b) a second monomer selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, acrylamide, lower alkyl acrylamides, N-alkoxy modified acrylamides, diacetone acrylamide, maleamic acid, meleamide, furamide, N-monoalkyl/aryl substituted amides, hydroxyethyl acrylate, and hydroxypropyl methacrylate; and (c) a modifier selected from the group consisting of epoxy resins, melamine formaldehyde resins, and urea formaldehyde resins.
Inventors
- 👤 Joseph P. Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:03
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; C; C08; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/244; C08J5/249; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31551; Y10T428/31627; Y10T428/31645; Y10T428/31649; Y10T442/00; Y10T442/20; Y10T442/2926; Y10T442/2934; Y10T442/60
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
177 words
A styrene insoluble fibrous mat comprising a fibrous material and a binder resin, said resin comprising the single step reaction product of a. a first alpha-beta ethylenically unsaturated monomer selected from the group consisting of styrene, vinyl esters, vinyl chloride, lower alkyl methacrylates, lower alkyl acrylates, lower alkyl itaconates, lower alkyl maleates, and lower alkyl fumarates; b. a second alpha-beta ethylenically unsaturated monomer selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, maleamic acid, maleamide, furamide, N-monoalkyl/aryl substituted amides, hydroxyethyl acrylate, and hydroxypropyl methacrylate; and c. a modifier selected from the group consisting of epoxy resins, melamine formaldehyde resins, and urea formaldehyde resins; wherein the amount of binder resin is equal to from about 3 percent to about 8 percent by weight based on the total weight of said mat and said binder resin comprises from about 75% to about 98% by weight of said first monomer, from about 1% to about 10% by weight of said monomer, and from about 1% to about 15% by weight of said modifier.
Claim 2
Dependent Claim
177 words
A styrene insoluble fibrous mat comprising a fibrous material and a binder resin, said resin comprising the single step reaction product of a. a first alpha-beta ethylenically unsaturated monomer selected from the group consisting of styrene, vinyl esters, vinyl chloride, lower alkyl methacrylates, lower alkyl acrylates, lower alkyl itaconates, lower alkyl maleates, and lower alkyl fumarates; b. a second alpha-beta ethylenically unsaturated monomer selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, maleamic acid, maleamide, furamide, N-monoalkyl/aryl substituted amides, hydroxyethyl acrylate, and hydroxypropyl methacrylate; and c. a modifier selected from the group consisting of epoxy resins, melamine formaldehyde resins, and urea formaldehyde resins; wherein the amount of binder resin is equal to from about 3 percent to about 8 percent by weight based on the total weight of said mat and said binder resin comprises from about 75% to about 98% by weight of said first monomer, from about 1% to about 10% by weight of said monomer, and from about 1% to about 15% by weight of said modifier.
Claim 3
Dependent Claim
14 words
A fibrous mat, as claimed in claim 1, wherein the fibrous material is glass.
Claim 4
Dependent Claim
24 words
A fibrous mat, as claimed in claim 1, wherein the binder resin is the reaction product of styrene, methacrylic acid, and an epoxy resin.
Claim 5
Independent Claim
199 words
A method of preparing a styrene insoluble fibrous mat, said method comprising a. preparing a mat comprising a fibrous material and a binder resin, wherein the amount of binder resin is equal to from about 3 percent to about 8 percent by weight based on the total weight of said mat, said resin comprising a mixture of i. from about 75% to about 98% by weight of a first alpha-beta ethylenically unsaturated monomer selected from the group consisting of styrene, vinyl esters, vinyl chloride, lower alkyl methacrylates, lower alkyl acrylates, lower alkyl itaconates, lower alkyl maleates, and lower alkyl fumarates; ii. from about 1% to about 10% by weight of a second alpha-beta ethylenically unsaturated monomer selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, maleamic acid, maleamide, furamide, N-monoalkyl/aryl substituted amides, hydroxyethyl acrylate, and hydroxypropyl methacrylate; and iii. from about 1% to about 15% by weight of a modifier selected from the group consisting of epoxy resins, melamide formaldehyde resins, and urea formaldehyde resins; and b. heating said mat to a temperature of from 150°C. to about 250°C. for a time sufficient to cure said mat to a styrene insoluble state.
Claim 6
Independent Claim
199 words
A method of preparing a styrene insoluble fibrous mat, said method comprising a. preparing a mat comprising a fibrous material and a binder resin, wherein the amount of binder resin is equal to from about 3 percent to about 8 percent by weight based on the total weight of said mat, said resin comprising a mixture of i. from about 75% to about 98% by weight of a first alpha-beta ethylenically unsaturated monomer selected from the group consisting of styrene, vinyl esters, vinyl chloride, lower alkyl methacrylates, lower alkyl acrylates, lower alkyl itaconates, lower alkyl maleates, and lower alkyl fumarates; ii. from about 1% to about 10% by weight of a second alpha-beta ethylenically unsaturated monomer selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, maleamic acid, maleamide, furamide, N-monoalkyl/aryl substituted amides, hydroxyethyl acrylate, and hydroxypropyl methacrylate; and iii. from about 1% to about 15% by weight of a modifier selected from the group consisting of epoxy resins, melamide formaldehyde resins, and urea formaldehyde resins; and b. heating said mat to a temperature of from 150°C. to about 250°C. for a time sufficient to cure said mat to a styrene insoluble state.
Claim 7
Dependent Claim
37 words
A method, as claimed in claim 4, wherein the mat is maintained at a temperature of from about 175°C. to about 225°C. for a period of time equal to from about 33 seconds to about 18 minutes.
Claim 8
Dependent Claim
32 words
A method, as claimed in claim 4, wherein the mat is maintained at a temperature of at least about 200°C. for a period of time equal to at least about 3 minutes.
Claim 9
Dependent Claim
19 words
A method, as claimed in claim 4, wherein the binder resin includes a catalyst to accelerate the curing reaction.
Claim 10
Dependent Claim
12 words
A method, as claimed in claim 7, wherein the catalyst is dimethylethanolamine.
References Cited (Backward Citations)
US2550465A
Cited
US2604464A
Cited
GB867545A
Cited
US3074834A
Cited
GB868335A
Cited
US3157562A
Cited
US3373075A
Cited
US3381054A
Cited
US3776810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |