Patent US4241136A successfully refreshed from Google Patents.
US4241136A
Expired / Lapsed
US
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Glass fiber size composition and process
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1979-03-05
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Granted: 1980-12-23
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Expires: 1999-03-05
Abstract
Abstract A process and composition for treating glass fibers for use as reinforcement of cementitious materials. The glass fibers are first sized with a size composition containing cationic fiber forming organic polymer and then a second coating containing an anionic film-forming organic polymer is applied to the glass fibers whereby the cationic and anionic polymers react to form a thin film on the glass fiber surfaces. The resulting glass fibers have good wetting and dispersibility characteristics for use as reinforcement of cementitious materials.
Inventors
- 👤 Ernst Dereser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:36
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/1025; C03C25/103; C03C25/24; C03C25/26; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
61 words
Glass fibers having a coating thereon, said coating being formed by first coating the glass fibers with a cationic size composition containing a cationic film-forming organic polymer and then coating the resulting glass fibers with an anionic size composition containing an anionic film-forming organic polymer whereby the cationic and anionic polymers react to form a thin film on the glass fibers.
Claim 2
Dependent Claim
61 words
Glass fibers having a coating thereon, said coating being formed by first coating the glass fibers with a cationic size composition containing a cationic film-forming organic polymer and then coating the resulting glass fibers with an anionic size composition containing an anionic film-forming organic polymer whereby the cationic and anionic polymers react to form a thin film on the glass fibers.
Claim 3
Dependent Claim
17 words
Glass fibers as defined in claim 1 wherein the cationic film-forming polymer is a cationic polyamide-epichlorohydrin resin.
Claim 4
Dependent Claim
16 words
Glass fibers as defined in claim 1 wherein the anionic film-forming polymer is an anionic starch.
Claim 5
Dependent Claim
24 words
Glass fibers as defined in claim 1 wherein the cationic size composition also includes a reactive size in the form of an alkylketene dimer.
Claim 6
Dependent Claim
17 words
Glass fibers as defined in claim 1 wherein the reactive size also includes a cationic protective colloid.
Claim 7
Dependent Claim
15 words
Glass fibers as defined in claim 1 wherein the protective colloid is a cationic starch.
Claim 8
Dependent Claim
16 words
Glass fibers as defined in claim 1 wherein the anionic size also includes a vinyl resin.
Claim 9
Dependent Claim
15 words
Glass fibers as defined in claim 1 wherein the anionic size composition includes a lubricant.
Claim 10
Dependent Claim
16 words
Glass fibers as defined in claim 1 wherein the anionic size composition includes a deflocculating agent.
Claim 11
Dependent Claim
70 words
A process for treating glass fibers for use as reinforcement for cementitious materials comprising the steps of coating glass fibers with a cationic size composition containing a cationic film-forming organic polymer and then coating the resulting glass fibers with an anionic size composition containing an anionic film-forming organic polymer whereby the cationic and anionic polymer react each with the other to form a thin film on the glass fiber surfaces.
Claim 12
Dependent Claim
70 words
A process for treating glass fibers for use as reinforcement for cementitious materials comprising the steps of coating glass fibers with a cationic size composition containing a cationic film-forming organic polymer and then coating the resulting glass fibers with an anionic size composition containing an anionic film-forming organic polymer whereby the cationic and anionic polymer react each with the other to form a thin film on the glass fiber surfaces.
Claim 13
Dependent Claim
17 words
A process as defined in claim 10 wherein the cationic film-forming polymer is a cationic polyamide-epichlorohydrin resin.
Claim 14
Dependent Claim
16 words
A process as defined in claim 10 wherein the anionic film-forming polymer is an anionic starch.
Claim 15
Dependent Claim
115 words
In a process for the manufacture of fiber-reinforced cementitious products wherein fibers are mixed with a cementitious material to form a pulp, the pulp is contacted with a foraminous forming member in which water is withdrawn to form a green product and the green product is cured, the improvement comprising forming the pulp with glass fibers having a coating thereon, said coating being formed by first coating the glass fibers with a cationic size composition containing a cationic film-forming organic polymer and then coating the resulting glass fibers with an anionic size composition containing an anionic film-forming organic polymer whereby the cationic and anionic polymers react to form a thin film on the glass fibers.
Claim 16
Dependent Claim
115 words
In a process for the manufacture of fiber-reinforced cementitious products wherein fibers are mixed with a cementitious material to form a pulp, the pulp is contacted with a foraminous forming member in which water is withdrawn to form a green product and the green product is cured, the improvement comprising forming the pulp with glass fibers having a coating thereon, said coating being formed by first coating the glass fibers with a cationic size composition containing a cationic film-forming organic polymer and then coating the resulting glass fibers with an anionic size composition containing an anionic film-forming organic polymer whereby the cationic and anionic polymers react to form a thin film on the glass fibers.
Claim 17
Dependent Claim
17 words
A process as defined in claim 13 wherein the cationic film-forming polymer is a cationic polyamide-epichlorohydrin resin.
Claim 18
Dependent Claim
16 words
A process as defined in claim 13 wherein the anionic film-forming polymer is an anionic starch.
Claim 19
Dependent Claim
24 words
A process as defined in claim 13 wherein the cationic size composition also includes a reactive size in the form of an alkylketene dimer.
Claim 20
Dependent Claim
17 words
A process as defined in claim 13 wherein the reactive size also includes a cationic protective colloid.
Claim 21
Dependent Claim
16 words
A process as defined in claim 13 wherein the anionic size also includes a vinyl resin.
Claim 22
Dependent Claim
90 words
In a glass fiber reinforced cementitious product formed of a cementitious material constituting a continuous phase in which coated glass fibers are distributed as reinforcement, the improvement comprising a coating on the glass fibers, said coating having been formed by first coating the glass fibers with a cationic size composition containing a cationic film-forming organic polymer and then coating the resulting glass fibers with an anionic size composition containing an anionic film-forming organic polymer whereby the cationic and anionic polymers react to form a thin film on the glass fibers.
Claim 23
Dependent Claim
90 words
In a glass fiber reinforced cementitious product formed of a cementitious material constituting a continuous phase in which coated glass fibers are distributed as reinforcement, the improvement comprising a coating on the glass fibers, said coating having been formed by first coating the glass fibers with a cationic size composition containing a cationic film-forming organic polymer and then coating the resulting glass fibers with an anionic size composition containing an anionic film-forming organic polymer whereby the cationic and anionic polymers react to form a thin film on the glass fibers.
Claim 24
Dependent Claim
17 words
A product as defined in claim 19 wherein the cationic film-forming polymer is a cationic polyamide-epichlorohydrin resin.
Claim 25
Dependent Claim
16 words
A product as defined in claim 19 wherein the anionic film-forming polymer is an anionic starch.
Claim 26
Dependent Claim
24 words
A product as defined in claim 19 wherein the cationic size composition also includes a reactive size in the form of an alkylketene dimer.
References Cited (Backward Citations)
US3322592A
Cited
US3888645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |