Patent US3926880A successfully refreshed from Google Patents.
US3926880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latex-resin mixtures
Assignee: Bayer AG
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Filing: 1974-06-24
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Granted: 1975-12-16
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Expires: 1994-06-24
Abstract
Abstract Stable aqueous dispersions which contain 20 to 60 parts by weight of chloroprene homopolymers and copolymers and 0.5 to 30 parts by weight of an adhesivefying resin and which are free from organic solvents.
Inventors
- 👤 Heinz Esser
- 👤 Jurgen Boldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:06
CPC Classifications
C; C08; C08L; C08L11/00; C08L11/02; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16; C08F36/18; C08L93/00; C08L93/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
139 words
A PROCESS FOR PRODUCING A STABLE AQUEOUS DISPERSION WHICH COMPRISES MIXING (1) A PERFORMED AQUEOUS DISPERSION OF A CHLOROPRENE POLYMER WHICH IS A HOMOPOLYMER THEREOF OR A COPOLYMER OF CHLOROPRENE WITH UP TO 20 PERCENT BY WEIGHT, BASED ON CHLOROPRENE, OF 2,3-DICHLOROBUTADIENE-(1,3), ACRYLONITRILE, METHACRYLIC ACID, ACRYLIC ACID OR AN ESTER OR HYDROXY ESTER OF ACRYLIC AICD OR METHACRYLIC ACID WITH A POLYHYDRIC ALCOHOL AND (2) A SOLUTION OF A NATURAL OR SYNTHETIC RESIN WHICH IMPROVES THE ADHESIVE POWER OF ADHESIVE MIXTURES, IN CHLOROPRENE OR A MIXTURE OF SAID MONOMERS OF SAID CHLOROPRENE COPOLYMER, THERE BEING FROM 5 TO 30 PERCENT BY WEIGHT OF SAID NATURAL OR SYNTHETIC RESIN RESULTING MIXTURE BASED ON SAID CHLOROPRENE POLYMER, AND SUBSEQUENTLY REMOVING THE CHLOROPRENE MONOMER OR SAID MIXTURE OF MONOMERS FROM SAID MIXTURE OF (1) AND (2) TO OBTAIN SAID STABLE AQUEOUS DISPERSION.
Claim 2
Dependent Claim
139 words
A PROCESS FOR PRODUCING A STABLE AQUEOUS DISPERSION WHICH COMPRISES MIXING (1) A PERFORMED AQUEOUS DISPERSION OF A CHLOROPRENE POLYMER WHICH IS A HOMOPOLYMER THEREOF OR A COPOLYMER OF CHLOROPRENE WITH UP TO 20 PERCENT BY WEIGHT, BASED ON CHLOROPRENE, OF 2,3-DICHLOROBUTADIENE-(1,3), ACRYLONITRILE, METHACRYLIC ACID, ACRYLIC ACID OR AN ESTER OR HYDROXY ESTER OF ACRYLIC AICD OR METHACRYLIC ACID WITH A POLYHYDRIC ALCOHOL AND (2) A SOLUTION OF A NATURAL OR SYNTHETIC RESIN WHICH IMPROVES THE ADHESIVE POWER OF ADHESIVE MIXTURES, IN CHLOROPRENE OR A MIXTURE OF SAID MONOMERS OF SAID CHLOROPRENE COPOLYMER, THERE BEING FROM 5 TO 30 PERCENT BY WEIGHT OF SAID NATURAL OR SYNTHETIC RESIN RESULTING MIXTURE BASED ON SAID CHLOROPRENE POLYMER, AND SUBSEQUENTLY REMOVING THE CHLOROPRENE MONOMER OR SAID MIXTURE OF MONOMERS FROM SAID MIXTURE OF (1) AND (2) TO OBTAIN SAID STABLE AQUEOUS DISPERSION.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the stable aqueous dispersion is concentrated to a solids content of 50 to 60percent by weight.
Claim 4
Dependent Claim
30 words
The process of claim 1 wherein said resin is selected from the group of resins consisting of terpene-phenol, terpene, coumarone-indene, colophony, colophony esters, pentaerythritol, pentaerythritol esters and alkyl phenol resins.
References Cited (Backward Citations)
US3198760A
Cited
US3492276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |