us3511764a - crosslinked polyacrylamide foam - google patents

US3511764A - Crosslinked polyacrylamide foam - Google Patents

US3511764A US3511764DA US3511764A US 3511764 A US3511764 A US 3511764A US 3511764D A US3511764D A US 3511764DA US 3511764 A US3511764 A US 3511764A Authority US United States Prior art keywords acrylamide temperature trioxane sheet foam Prior art date 1967-03-23 Legal status (The legal status is an assumption and is not a legal conclusion.

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us3900378a - hydrogels from radiation crosslinked blends

US3900378A - Hydrogels from radiation crosslinked blends

US3900378A US303880A US30388072A US3900378A US 3900378 A US3900378 A US 3900378A US 303880 A US303880 A US 303880A US 30388072 A US30388072 A US 30388072A US 3900378 A US3900378 A US 3900378A Authority US United States Prior art keywords process hydrophilic polymer water polymer filler Prior art date 1971-11-01 Legal status (The legal status is an assumption and is not a legal conclusion.

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news release - basf

News Release - BASF

Polyacrylamide is a significant contributor to BASF’s innovations for ore binders, alumina processing and tailings management in mining, and for enhanced ore recovery and reservoir stimulation in oilfields. In 2018, BASF filed 15 patents for solutions based on polyacrylamide.

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ru2583429c2 - interpolymer crosslinked gel and method

RU2583429C2 - Interpolymer crosslinked gel and method

FIELD: chemistry. SUBSTANCE: well treatment gel contains more than 1 wt % of a polyacrylamide crosslinked with a non-metallic crosslinking agent. The non-metallic crosslinking agent contains polylactam. EFFECT: obtaining a gel having good gellation control in a well. 13 cl, 4 tbl, 7 dwg

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us3290261a - patents.google.com

US3290261A - patents.google.com

US3290261A US303941A US30394163A US3290261A US 3290261 A US3290261 A US 3290261A US 303941 A US303941 A US 303941A US 30394163 A US30394163 A US 30394163A US 3290261 A US3290261 A US 3290261A Authority US United States Prior art keywords polycarbonate polyacetal resin carbonate aromatic polycarbonate Prior art date 1963-08-22 Legal status (The legal status is an assumption and is not a legal

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us7137926b2 - foam roller - google patents

US7137926B2 - Foam roller - Google Patents

US7137926B2 US10/801,735 US80173504A US7137926B2 US 7137926 B2 US7137926 B2 US 7137926B2 US 80173504 A US80173504 A US 80173504A US 7137926 B2 US7137926 B2 US 7137926B2 Authority US United States Prior art keywords curvature surface roller axis radius Prior art date 2004-03-16 Legal status (The legal status is an assumption and is not a legal conclusion.

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patents - debgroup.com

Patents - debgroup.com

au2013203276b2, au2015210392b2, cn104321148b, cn105521885b, ep2855029b1, hk1202483a1, hk1220662, jp6077644b2, mx342382b, nz629340b, sg11201406944va, us8814005

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www.google.com.hk

www.google.com.hk

由于此网站的设置,我们无法提供该页面的具体描述。

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us3290261a - patents.google.com

US3290261A - patents.google.com

US3290261A US303941A US30394163A US3290261A US 3290261 A US3290261 A US 3290261A US 303941 A US303941 A US 303941A US 30394163 A US30394163 A US 30394163A US 3290261 A US3290261 A US 3290261A Authority US United States Prior art keywords polycarbonate polyacetal resin carbonate aromatic polycarbonate Prior art date 1963-08-22 Legal status (The legal status is an assumption and is not a legal

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de1238210b - patents.google.com

DE1238210B - patents.google.com

DE1238210B DE1964G0041022 DEG0041022A DE1238210B DE 1238210 B DE1238210 B DE 1238210B DE 1964G0041022 DE1964G0041022 DE 1964G0041022 DE G0041022 A DEG0041022 A DE G0041022A DE 1238210 B DE1238210 B DE 1238210B Authority DE Germany Prior art keywords formkoerpers schaumfoermigen polycarbonate producing Prior art date 1963-08-22 Legal status (The legal status is an assumption and is not a legal

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us3290261a - patents.google.com

US3290261A - patents.google.com

US3290261A US303941A US30394163A US3290261A US 3290261 A US3290261 A US 3290261A US 303941 A US303941 A US 303941A US 30394163 A US30394163 A US 30394163A US 3290261 A US3290261 A US 3290261A Authority US United States Prior art keywords polycarbonate polyacetal resin carbonate aromatic polycarbonate Prior art date 1963-08-22 Legal status (The legal status is an assumption and is not a legal

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de1238210b - patents.google.com

DE1238210B - patents.google.com

DE1238210B DE1964G0041022 DEG0041022A DE1238210B DE 1238210 B DE1238210 B DE 1238210B DE 1964G0041022 DE1964G0041022 DE 1964G0041022 DE G0041022 A DEG0041022 A DE G0041022A DE 1238210 B DE1238210 B DE 1238210B Authority DE Germany Prior art keywords formkoerpers schaumfoermigen polycarbonate producing Prior art date 1963-08-22 Legal status (The legal status is an assumption and is not a legal

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us2990381a - patents.google.com

US2990381A - patents.google.com

US2990381A US738004A US73800458A US2990381A US 2990381 A US2990381 A US 2990381A US 738004 A US738004 A US 738004A US 73800458 A US73800458 A US 73800458A US 2990381 A US2990381 A US 2990381A Authority US United States Prior art keywords weight temperature part acrylamide aqueous Prior art date 1957-05-29 Legal status (The legal status is an assumption and is not a legal conclusion.

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de1238210b - patents.google.com

DE1238210B - patents.google.com

DE1238210B DE1964G0041022 DEG0041022A DE1238210B DE 1238210 B DE1238210 B DE 1238210B DE 1964G0041022 DE1964G0041022 DE 1964G0041022 DE G0041022 A DEG0041022 A DE G0041022A DE 1238210 B DE1238210 B DE 1238210B Authority DE Germany Prior art keywords formkoerpers schaumfoermigen polycarbonate producing Prior art date 1963-08-22 Legal status (The legal status is an assumption and is not a legal

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