US4997703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding material containing fillers
Assignee: BASF SE
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Filing: 1988-10-13
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Granted: 1991-03-05
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Expires: 2008-10-13
Abstract
Abstract A molding material consists of a curable synthetic resin, reinforcing fibers and fillers, the synthetic resin being applied in two layers to the reinforcing fibers: In an inner layer, the reinforcing fibers are impregnated with a synthetic resin component A which contains up to 10% by weight of fillers, and, in an outer layer, the impregnated reinforcing fibers are coated or surrounded with a further synthetic resin component B which contains not less than 20% by weight of fillers, and the components A and B may contain similar or different synthetic resins.
Inventors
- 👤 Heinz Gehrig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:38
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/02; B32; B32B; B32B27/00; B32B27/12; B29C70/021; B29C70/025; B32B27/18; B32B27/20; B32B38/00; B32B38/08; B32B5/00; B32B5/22; B32B5/24; B32B5/28; C; C08; C08J; C08J5/00; C08J5/04; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/259; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2971; Y10T428/2973; Y10T428/30; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/60; Y10T442/699
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
A filler-containing molding material, containing a curable synthetic resin, reinforcing fibers in the form of rovings, bands or webs, and fillers, wherein the synthetic resin is applied in two layers to the reinforcing fibers: in an inner layer, the fibers are impregnated with resin component A are synthetic resin component A which contains up to 10% by weight of fillers, and in an outer layer, the fibers impregnated with resin component A are coated or surrounded with a further synthetic resin component B which contains not less than 20% by weight fillers.
Claim 2
Dependent Claim
92 words
A filler-containing molding material, containing a curable synthetic resin, reinforcing fibers in the form of rovings, bands or webs, and fillers, wherein the synthetic resin is applied in two layers to the reinforcing fibers: in an inner layer, the fibers are impregnated with resin component A are synthetic resin component A which contains up to 10% by weight of fillers, and in an outer layer, the fibers impregnated with resin component A are coated or surrounded with a further synthetic resin component B which contains not less than 20% by weight fillers.
Claim 3
Dependent Claim
39 words
A filler-containing molding material as claimed in claim 1, containing 15-60% by weight of synthetic resin, 10-80% by weight of reinforcing fibers, 10-70% by weight of fillers and 0-30% by weight of compatible additives, the percentages summing to 100.
Claim 4
Dependent Claim
19 words
A filler-containing molding material as claimed in claim 1, wherein the components A and B contain similar synthetic resins.
Claim 5
Dependent Claim
19 words
A filler-containing molding material as claimed in claim 1, wherein the components A and B contain different synthetic resins.
Claim 6
Dependent Claim
48 words
A filler-containing molding material as claimed in claim 1, wherein the amount of component A is 10-90% by volume and the amount of the outer component B is 90-10% by volume, the percentages in each case being based on the sum of synthetic resin, fillers and any additives.
Claim 7
Dependent Claim
17 words
A molding material as claimed in claim 1, wherein the impregnated and coated reinforcing fibers are chopped.
Claim 8
Dependent Claim
21 words
An molding material as claimed in claim 1, wherein the impregnated and coated reinforcing fibers are spread out in sheet-like form.
Claim 9
Dependent Claim
52 words
A process for preparing the molding material of claim 1 comprising: impregnating reinforcing fibers with a synthetic resin component A that contains up to 10% by weight of fillers; then coating or surrounding said impregnated fibers with a synthetic resin component B that contains not less than 20% by weight of fillers.
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) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |