US3928684A
Expired / Lapsed
US
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Strength characteristics of glass fiber reinforced vinyl chloride thermoplastics and chlorination products thereof
Assignee: Dynamit Nobel AG
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Filing: 1973-05-24
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Granted: 1975-12-23
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Expires: 1993-05-24
Abstract
Abstract Polyvinylchloride or chlorinated polyvinylchloride polymer article reinforced with glass fibers coated with vinyl chloridevinyl trialkoxysilane copolymers in an amount effective to increase the strength characteristics of the article. The copolymer can include at least one of carboxylic acid vinyl esters, unsaturated mono- or dicarboxylic acid esters, and alkyl vinyl ethers.
Inventors
- 👤 Robert Buning
- 👤 Peter Loebler
- 👤 Werner Trautvetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:19
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; B; B32; B32B; B32B27/00; B32B27/30; B32B27/12; B32B27/304; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08K9/00; C08K9/04; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; B32B2262/00; B32B2262/10; B32B2262/101; B32B2305/00; B32B2305/08; B32B2309/00; B32B2309/60; B32B2309/68; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663; Y10T442/00; Y10T442/20; Y10T442/2402; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3594
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
35 words
POLYVINYLCHLORIDE OR CHLORINATED POLYVINYLCHLORIDE POLYMER ARTICLE REINFORCED WITH GLASS FIBERS COATED WITH VINYL CHLORIDE-VINYL TRIALKOXYSILANE COPOLYMERS CONTAINING A MAJOR AMOUNT OF VINYL CHLORIDE IN AN AMOUNT EFFECTIVE TO INCREASE THE STRENGHT CHARACTERISTICS OF THE ARTICLE.
Claim 2
Dependent Claim
35 words
POLYVINYLCHLORIDE OR CHLORINATED POLYVINYLCHLORIDE POLYMER ARTICLE REINFORCED WITH GLASS FIBERS COATED WITH VINYL CHLORIDE-VINYL TRIALKOXYSILANE COPOLYMERS CONTAINING A MAJOR AMOUNT OF VINYL CHLORIDE IN AN AMOUNT EFFECTIVE TO INCREASE THE STRENGHT CHARACTERISTICS OF THE ARTICLE.
Claim 3
Dependent Claim
42 words
Article according to claim 1, said copolymer being a copolymer of vinyl chloride, vinyl trialkoxysilane, and a modifier, the modifier being at least one of vinyl esters of saturated carboxylic acids, esters of ethylenically, unsaturated mono- or dicarboxylic acids, and alkylvinyl ethers.
Claim 4
Dependent Claim
21 words
Article according to claim 1, the amount of copolymer being 0.1 to 15.0 wt-% of the weight of the glass fiber.
Claim 5
Dependent Claim
21 words
Article according to claim 1, the amount of copolymer being 0.4 to 8.0 wt-% of the weight of the glass fiber.
Claim 6
Dependent Claim
27 words
Article according to claim 1, the proportion of vinyl chloride to vinyl trialkoxysilane being 90 to 95 wt-% vinyl chloride and 5 to 10 wt-% vinyl trialkoxysilane.
Claim 7
Dependent Claim
32 words
Article according claim 2, the proportion of said components of the copolymer being 68 to 77 wt-% vinyl chloride, 4 to 12 wt-% vinyl triakoxysilane, and 12 to 27 wt-% of modifier.
Claim 8
Dependent Claim
61 words
Article according to claim 2, the vinyl triakoxysilane being vinyl triethoxysilane, the modifier being Beta -alkylpivalic acid vinyl ester of the formula C8-10H17-21-CH2-C(CH3)2-COO-CH CH2 and dicyclohexylfumarate, the proportion of the copolymer components being 68 to 77 wt-% vinyl chloride, 4 to 12 wt-% vinyl triethoxysilane, 8 to 17 wt-% of the vinyl ester, and 4 to 10 wt-% of the fumarate.
Claim 9
Dependent Claim
11 words
Article according to claim 7, the modifying components including alkylvinyl ether.
Claim 10
Dependent Claim
20 words
Article according to claim 1, the article being a laminate comprising alternating layers of said polymers and coated glass fibers.
Claim 11
Dependent Claim
42 words
Article according to claim 1, the glass fiber being in the form of glass silk fabric, glass fiber fabric, glass fiber mat or fleeces, short glass fibers or loose chopped glass silk strands 5 to 25 mm long or glass staple fibers.
Claim 12
Dependent Claim
32 words
Process for producing an article according to claim 1, which comprises inserting the coated glass fibers in said polymer and heating the resulting admixture to integrate said polymer and form said article.
Claim 13
Dependent Claim
39 words
Process according to claim 11, wherein the glass fibers are coated with said copolymer by applying a solution of the copolymer in an organic solvent or an aqueous dispersion of the copolymer to the glass fibers by wet impregnation.
Claim 14
Dependent Claim
34 words
Process according to claim 12, wherein the solution or dispersion contains 1 to 2 wt-% of epoxidized, unsaturated fatty acid ester as a heat stabilizer, and the solvent is an acetic ester, butanone, tetrahydrofuran.
Claim 15
Dependent Claim
17 words
Process according to claim 11, wherein the glass fibers, in desized state, are coated with the copolymer.
Claim 16
Dependent Claim
24 words
Process according to claim 11, wherein glass fibers sized with a chromium methacrylate complex or a substituted alkyl trialkoxysilane, are coated with said copolymer.
Claim 17
Dependent Claim
34 words
GLASS FIBERS COATED WITH VINYL CHLORIDE - VINYL TRIALKOXYSILANE COPOLYMER CONTAINING A MAJOR AMOUNT OF VINYL CHLORIDE SUITABLE FOR USE IN A POLYVINYL CHLORIDE OR CHLORINATED POLYVINYL CHLORIDE POLYMER ARTICLE FOR REINFORCING SAID ARTICLE.
Claim 18
Dependent Claim
34 words
GLASS FIBERS COATED WITH VINYL CHLORIDE - VINYL TRIALKOXYSILANE COPOLYMER CONTAINING A MAJOR AMOUNT OF VINYL CHLORIDE SUITABLE FOR USE IN A POLYVINYL CHLORIDE OR CHLORINATED POLYVINYL CHLORIDE POLYMER ARTICLE FOR REINFORCING SAID ARTICLE.
Claim 19
Dependent Claim
12 words
Article according to claim 1, the vinyl trialkoxysilane being of the formula
Claim 20
Dependent Claim
15 words
Article according to claim 17, wherein each R is of 1 to 4 carbon atoms.
Claim 21
Dependent Claim
42 words
Article according to claim 18, said copolymer being a copolymer of vinyl chloride, vinyl trialkoxysilane, and a modifier, the modifier being at least one of vinyl esters of saturated carboxylic acids, esters of ethylenically, unsaturated mono- or dicarboxylic acids, and alkylvinyl ethers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |